Example usage for android.view MotionEvent ACTION_POINTER_UP

List of usage examples for android.view MotionEvent ACTION_POINTER_UP

Introduction

In this page you can find the example usage for android.view MotionEvent ACTION_POINTER_UP.

Prototype

int ACTION_POINTER_UP

To view the source code for android.view MotionEvent ACTION_POINTER_UP.

Click Source Link

Document

Constant for #getActionMasked : A non-primary pointer has gone up.

Usage

From source file:com.cyanogenmod.filemanager.ui.widgets.ViewDragHelper.java

/**
 * Process a touch event received by the parent view. This method will dispatch callback events
 * as needed before returning. The parent view's onTouchEvent implementation should call this.
 *
 * @param ev The touch event received by the parent view
 *//* w ww. j  a  v  a2  s. c om*/
public void processTouchEvent(MotionEvent ev) {
    final int action = ev.getActionMasked();
    final int actionIndex = ev.getActionIndex();

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();
    }

    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    mVelocityTracker.addMovement(ev);

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = ev.getPointerId(0);
        final View toCapture = findTopChildUnder((int) x, (int) y);

        saveInitialMotion(x, y, pointerId);

        // Since the parent is already directly processing this touch event,
        // there is no reason to delay for a slop before dragging.
        // Start immediately if possible.
        tryCaptureViewForDrag(toCapture, pointerId);

        final int edgesTouched = mInitialEdgesTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }

    case MotionEvent.ACTION_POINTER_DOWN: {
        final int pointerId = ev.getPointerId(actionIndex);
        final float x = ev.getX(actionIndex);
        final float y = ev.getY(actionIndex);

        saveInitialMotion(x, y, pointerId);

        // A ViewDragHelper can only manipulate one view at a time.
        if (mDragState == STATE_IDLE) {
            // If we're idle we can do anything! Treat it like a normal down event.

            final View toCapture = findTopChildUnder((int) x, (int) y);
            tryCaptureViewForDrag(toCapture, pointerId);

            final int edgesTouched = mInitialEdgesTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
        } else if (isCapturedViewUnder((int) x, (int) y)) {
            // We're still tracking a captured view. If the same view is under this
            // point, we'll swap to controlling it with this pointer instead.
            // (This will still work if we're "catching" a settling view.)

            tryCaptureViewForDrag(mCapturedView, pointerId);
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (mDragState == STATE_DRAGGING) {
            final int index = ev.findPointerIndex(mActivePointerId);
            final float x = ev.getX(index);
            final float y = ev.getY(index);
            final int idx = (int) (x - mLastMotionX[mActivePointerId]);
            final int idy = (int) (y - mLastMotionY[mActivePointerId]);

            dragTo(mCapturedView.getLeft() + idx, mCapturedView.getTop() + idy, idx, idy);

            saveLastMotion(ev);
        } else {
            // Check to see if any pointer is now over a draggable view.
            final int pointerCount = ev.getPointerCount();
            for (int i = 0; i < pointerCount; i++) {
                final int pointerId = ev.getPointerId(i);
                final float x = ev.getX(i);
                final float y = ev.getY(i);
                final float dx = x - mInitialMotionX[pointerId];
                final float dy = y - mInitialMotionY[pointerId];

                reportNewEdgeDrags(dx, dy, pointerId);
                if (mDragState == STATE_DRAGGING) {
                    // Callback might have started an edge drag.
                    break;
                }

                final View toCapture = findTopChildUnder((int) x, (int) y);
                if (checkTouchSlop(toCapture, dx, dy) && tryCaptureViewForDrag(toCapture, pointerId)) {
                    break;
                }
            }
            saveLastMotion(ev);
        }
        break;
    }

    case MotionEvent.ACTION_POINTER_UP: {
        final int pointerId = ev.getPointerId(actionIndex);
        if (mDragState == STATE_DRAGGING && pointerId == mActivePointerId) {
            // Try to find another pointer that's still holding on to the captured view.
            int newActivePointer = INVALID_POINTER;
            final int pointerCount = ev.getPointerCount();
            for (int i = 0; i < pointerCount; i++) {
                final int id = ev.getPointerId(i);
                if (id == mActivePointerId) {
                    // This one's going away, skip.
                    continue;
                }

                final float x = ev.getX(i);
                final float y = ev.getY(i);
                if (findTopChildUnder((int) x, (int) y) == mCapturedView
                        && tryCaptureViewForDrag(mCapturedView, id)) {
                    newActivePointer = mActivePointerId;
                    break;
                }
            }

            if (newActivePointer == INVALID_POINTER) {
                // We didn't find another pointer still touching the view, release it.
                releaseViewForPointerUp();
            }
        }
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP: {
        if (mDragState == STATE_DRAGGING) {
            releaseViewForPointerUp();
        }
        cancel();
        break;
    }

    case MotionEvent.ACTION_CANCEL: {
        if (mDragState == STATE_DRAGGING) {
            dispatchViewReleased(0, 0);
        }
        cancel();
        break;
    }
    }
}

From source file:com.fairphone.fplauncher3.Workspace.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    switch (ev.getAction() & MotionEvent.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN:
        mXDown = ev.getX();//  www. j a va 2 s.  co  m
        mYDown = ev.getY();
        mTouchDownTime = System.currentTimeMillis();
        break;
    case MotionEvent.ACTION_POINTER_UP:
    case MotionEvent.ACTION_UP:
        if (mTouchState == TOUCH_STATE_REST) {
            final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage);
            if (currentPage != null && !CellLayout.lastDownOnOccupiedCell()) {
                onWallpaperTap(ev);
            }
        }
    }
    return super.onInterceptTouchEvent(ev);
}

From source file:cnedu.ustcjd.widget.MultiSlider.java

@Override
public boolean onTouchEvent(MotionEvent event) {
    if (!mIsUserSeekable || !isEnabled()) {
        return false;
    }//from w  w w.j a  v  a2  s  .  co m
    final int xx = Math.round(event.getX());
    final int yy = Math.round(event.getY());

    int pointerIdx = event.getActionIndex();

    Thumb currThumb = null;
    if (event.getActionMasked() == MotionEvent.ACTION_DOWN
            || event.getActionMasked() == MotionEvent.ACTION_POINTER_DOWN) {
        LinkedList<Thumb> closestOnes = getClosestThumb((int) event.getX(pointerIdx));

        if (isInScrollingContainer() && mDraggingThumbs.size() == 0 && exactTouched != null && pointerIdx > 0) {
            //we have been here before => we want to use the bar
            Thumb prevThumb = exactTouched.getFirst();
            onStartTrackingTouch(prevThumb);
            exactTouched = null;
        }

        if (closestOnes != null && !closestOnes.isEmpty()) {
            if (closestOnes.size() == 1) {
                currThumb = closestOnes.getFirst();
                if (isInScrollingContainer() && mDraggingThumbs.size() == 0) {
                    exactTouched = closestOnes;
                }
            } else {
                //we have more than one thumb at the same place and we touched there
                exactTouched = closestOnes;
            }
        }
    } else if (event.getActionMasked() == MotionEvent.ACTION_MOVE) {
        if (exactTouched != null && !exactTouched.isEmpty()) {
            currThumb = getMostMovableThumb(event);
            //check if move actually changed value
            // if (currThumb == null) return false;
        } else if (mDraggingThumbs.size() > pointerIdx) {
            currThumb = mDraggingThumbs.get(pointerIdx);
        }
    } else if (event.getActionMasked() == MotionEvent.ACTION_UP
            || event.getActionMasked() == MotionEvent.ACTION_POINTER_UP) {
        if (mDraggingThumbs.size() > pointerIdx) {
            currThumb = mDraggingThumbs.get(pointerIdx);
        } //else we had a candidate but was never tracked
        else if (exactTouched != null && exactTouched.size() > 0) {
            currThumb = getMostMovableThumb(event);
            exactTouched = null;
        }
    }
    //        else {
    //            LinkedList<Thumb> closestOnes = getClosestThumb((int) event.getX());
    //            currThumb = closestOnes.getFirst();
    //        }

    switch (event.getActionMasked()) {
    case MotionEvent.ACTION_DOWN:
    case MotionEvent.ACTION_POINTER_DOWN:
        if (isInScrollingContainer() && mDraggingThumbs.size() == 0) {
            mTouchDownX = event.getX(pointerIdx);
        } else {
            onStartTrackingTouch(currThumb);
            setThumbValue(currThumb, getValue(event, currThumb), true);
            setHotspot(xx, yy, currThumb);
        }
        break;
    //with move we dont have pointer action so set them all
    case MotionEvent.ACTION_MOVE:
        if (mDraggingThumbs.contains(currThumb)) {
            //need the index
            for (int i = 0; i < mDraggingThumbs.size(); i++) {
                if (mDraggingThumbs.get(i) != null && mDraggingThumbs.get(i).getThumb() != null) {
                    invalidate(mDraggingThumbs.get(i).getThumb().getBounds());
                }
                setThumbValue(mDraggingThumbs.get(i), getValue(event, i, mDraggingThumbs.get(i)), true);

            }
            setHotspot(xx, yy, currThumb);
        } else {
            final float x = event.getX(pointerIdx);
            if (Math.abs(x - mTouchDownX) > mScaledTouchSlop) {
                onStartTrackingTouch(currThumb);
                exactTouched = null;
                setThumbValue(currThumb, getValue(event, currThumb), true);
                setHotspot(xx, yy, currThumb);
            }
        }

        break;

    case MotionEvent.ACTION_UP:
        setPressed(false);
        //there are other pointers left
    case MotionEvent.ACTION_POINTER_UP:
        if (currThumb != null) {
            boolean toUnPress = false;
            if (!isPressed()) {
                setPressed(true);
                toUnPress = true;
            }
            setThumbValue(currThumb, getValue(event, currThumb), true);
            setHotspot(xx, yy, currThumb);
            onStopTrackingTouch(currThumb);
            if (toUnPress) {
                setPressed(false);
            }
        } else {
            //                    currThumb = getClosestThumb(newValue);
            //                    // Touch up when we never crossed the touch slop threshold should
            //                    // be interpreted as a tap-seek to that location.
            //                    onStartTrackingTouch(currThumb);
            //                    setThumbValue(currThumb, newValue, true);
            //                    onStopTrackingTouch(currThumb);
        }
        // ProgressBar doesn't know to repaint the thumb drawable
        // in its inactive state when the touch stops (because the
        // value has not apparently changed)
        invalidate();
        break;
    case MotionEvent.ACTION_CANCEL:
        if (mDraggingThumbs != null) {
            onStopTrackingTouch();
            setPressed(false);
        }
        invalidate(); // see above explanation
        break;
    }
    return true;
}

From source file:com.android.launcher3.Workspace.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    switch (ev.getAction() & MotionEvent.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN:
        mXDown = ev.getX();//from w ww .  jav  a 2s  . c  o  m
        mYDown = ev.getY();
        mTouchDownTime = System.currentTimeMillis();
        break;
    case MotionEvent.ACTION_POINTER_UP:
    case MotionEvent.ACTION_UP:
        if (mTouchState == TOUCH_STATE_REST) {
            final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage);
            if (currentPage != null && !currentPage.lastDownOnOccupiedCell()) {
                onWallpaperTap(ev);
            }
        }
    }
    return super.onInterceptTouchEvent(ev);
}

From source file:com.android.launcher2.PagedView.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    // Skip touch handling if there are no pages to swipe
    if (getChildCount() <= 0)
        return super.onTouchEvent(ev);

    acquireVelocityTrackerAndAddMovement(ev);

    final int action = ev.getAction();

    switch (action & MotionEvent.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN:
        /*/*from  w ww.  ja  v  a2 s. com*/
         * If being flinged and user touches, stop the fling. isFinished
         * will be false if being flinged.
         */
        if (!mScroller.isFinished()) {
            mScroller.abortAnimation();
        }

        // Remember where the motion event started
        mDownMotionX = mLastMotionX = ev.getX();
        mLastMotionXRemainder = 0;
        mTotalMotionX = 0;
        mActivePointerId = ev.getPointerId(0);
        if (mTouchState == TOUCH_STATE_SCROLLING) {
            pageBeginMoving();
        }
        break;

    case MotionEvent.ACTION_MOVE:
        if (mTouchState == TOUCH_STATE_SCROLLING) {
            // Scroll to follow the motion event
            final int pointerIndex = ev.findPointerIndex(mActivePointerId);
            final float x = ev.getX(pointerIndex);
            final float deltaX = mLastMotionX + mLastMotionXRemainder - x;

            mTotalMotionX += Math.abs(deltaX);

            // Only scroll and update mLastMotionX if we have moved some discrete amount.  We
            // keep the remainder because we are actually testing if we've moved from the last
            // scrolled position (which is discrete).
            if (Math.abs(deltaX) >= 1.0f) {
                mTouchX += deltaX;
                mSmoothingTime = System.nanoTime() / NANOTIME_DIV;
                if (!mDeferScrollUpdate) {
                    scrollBy((int) deltaX, 0);
                    if (DEBUG)
                        Log.d(TAG, "onTouchEvent().Scrolling: " + deltaX);
                } else {
                    invalidate();
                }
                mLastMotionX = x;
                mLastMotionXRemainder = deltaX - (int) deltaX;
            } else {
                awakenScrollBars();
            }
        } else {
            determineScrollingStart(ev);
        }
        break;

    case MotionEvent.ACTION_UP:
        if (mTouchState == TOUCH_STATE_SCROLLING) {
            final int activePointerId = mActivePointerId;
            final int pointerIndex = ev.findPointerIndex(activePointerId);
            final float x = ev.getX(pointerIndex);
            final VelocityTracker velocityTracker = mVelocityTracker;
            velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
            int velocityX = (int) velocityTracker.getXVelocity(activePointerId);
            final int deltaX = (int) (x - mDownMotionX);
            final int pageWidth = getScaledMeasuredWidth(getPageAt(mCurrentPage));
            boolean isSignificantMove = Math.abs(deltaX) > pageWidth * SIGNIFICANT_MOVE_THRESHOLD;

            mTotalMotionX += Math.abs(mLastMotionX + mLastMotionXRemainder - x);

            boolean isFling = mTotalMotionX > MIN_LENGTH_FOR_FLING
                    && Math.abs(velocityX) > mFlingThresholdVelocity;

            // In the case that the page is moved far to one direction and then is flung
            // in the opposite direction, we use a threshold to determine whether we should
            // just return to the starting page, or if we should skip one further.
            boolean returnToOriginalPage = false;
            if (Math.abs(deltaX) > pageWidth * RETURN_TO_ORIGINAL_PAGE_THRESHOLD
                    && Math.signum(velocityX) != Math.signum(deltaX) && isFling) {
                returnToOriginalPage = true;
            }

            int finalPage;
            // We give flings precedence over large moves, which is why we short-circuit our
            // test for a large move if a fling has been registered. That is, a large
            // move to the left and fling to the right will register as a fling to the right.
            if (((isSignificantMove && deltaX > 0 && !isFling) || (isFling && velocityX > 0))
                    && mCurrentPage > 0) {
                finalPage = returnToOriginalPage ? mCurrentPage : mCurrentPage - 1;
                snapToPageWithVelocity(finalPage, velocityX);
            } else if (((isSignificantMove && deltaX < 0 && !isFling) || (isFling && velocityX < 0))
                    && mCurrentPage < getChildCount() - 1) {
                finalPage = returnToOriginalPage ? mCurrentPage : mCurrentPage + 1;
                snapToPageWithVelocity(finalPage, velocityX);
            } else {
                snapToDestination();
            }
        } else if (mTouchState == TOUCH_STATE_PREV_PAGE) {
            // at this point we have not moved beyond the touch slop
            // (otherwise mTouchState would be TOUCH_STATE_SCROLLING), so
            // we can just page
            int nextPage = Math.max(0, mCurrentPage - 1);
            if (nextPage != mCurrentPage) {
                snapToPage(nextPage);
            } else {
                snapToDestination();
            }
        } else if (mTouchState == TOUCH_STATE_NEXT_PAGE) {
            // at this point we have not moved beyond the touch slop
            // (otherwise mTouchState would be TOUCH_STATE_SCROLLING), so
            // we can just page
            int nextPage = Math.min(getChildCount() - 1, mCurrentPage + 1);
            if (nextPage != mCurrentPage) {
                snapToPage(nextPage);
            } else {
                snapToDestination();
            }
        } else {
            onUnhandledTap(ev);
        }
        mTouchState = TOUCH_STATE_REST;
        mActivePointerId = INVALID_POINTER;
        releaseVelocityTracker();
        break;

    case MotionEvent.ACTION_CANCEL:
        if (mTouchState == TOUCH_STATE_SCROLLING) {
            snapToDestination();
        }
        mTouchState = TOUCH_STATE_REST;
        mActivePointerId = INVALID_POINTER;
        releaseVelocityTracker();
        break;

    case MotionEvent.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;
    }

    return true;
}

From source file:org.telegram.ui.Components.ChatAttachAlert.java

private boolean processTouchEvent(MotionEvent event) {
    if (!pressed && event.getActionMasked() == MotionEvent.ACTION_DOWN
            || event.getActionMasked() == MotionEvent.ACTION_POINTER_DOWN) {
        if (!takingPhoto) {
            pressed = true;//  www.j av  a  2  s  .c om
            maybeStartDraging = true;
            lastY = event.getY();
        }
    } else if (pressed) {
        if (event.getActionMasked() == MotionEvent.ACTION_MOVE) {
            float newY = event.getY();
            float dy = (newY - lastY);
            if (maybeStartDraging) {
                if (Math.abs(dy) > AndroidUtilities.getPixelsInCM(0.4f, false)) {
                    maybeStartDraging = false;
                }
            } else {
                cameraView.setTranslationY(cameraView.getTranslationY() + dy);
                lastY = newY;
                if (cameraPanel.getTag() == null) {
                    cameraPanel.setTag(1);
                    AnimatorSet animatorSet = new AnimatorSet();
                    animatorSet.playTogether(ObjectAnimator.ofFloat(cameraPanel, "alpha", 0.0f),
                            ObjectAnimator.ofFloat(flashModeButton[0], "alpha", 0.0f),
                            ObjectAnimator.ofFloat(flashModeButton[1], "alpha", 0.0f));
                    animatorSet.setDuration(200);
                    animatorSet.start();
                }
            }
        } else if (event.getActionMasked() == MotionEvent.ACTION_CANCEL
                || event.getActionMasked() == MotionEvent.ACTION_UP
                || event.getActionMasked() == MotionEvent.ACTION_POINTER_UP) {
            pressed = false;
            if (Math.abs(cameraView.getTranslationY()) > cameraView.getMeasuredHeight() / 6.0f) {
                closeCamera(true);
            } else {
                AnimatorSet animatorSet = new AnimatorSet();
                animatorSet.playTogether(ObjectAnimator.ofFloat(cameraView, "translationY", 0.0f),
                        ObjectAnimator.ofFloat(cameraPanel, "alpha", 1.0f),
                        ObjectAnimator.ofFloat(flashModeButton[0], "alpha", 1.0f),
                        ObjectAnimator.ofFloat(flashModeButton[1], "alpha", 1.0f));
                animatorSet.setDuration(250);
                animatorSet.setInterpolator(interpolator);
                animatorSet.start();
                cameraPanel.setTag(null);
            }
        }
    }
    return true;
}

From source file:cc.flydev.launcher.Page.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    if (DISABLE_TOUCH_INTERACTION) {
        return false;
    }/*from  www. j av a 2  s.c o m*/

    /*
     * This method JUST determines whether we want to intercept the motion.
     * If we return true, onTouchEvent will be called and we do the actual
     * scrolling there.
     */
    acquireVelocityTrackerAndAddMovement(ev);

    // Skip touch handling if there are no pages to swipe
    if (getChildCount() <= 0)
        return super.onInterceptTouchEvent(ev);

    /*
     * Shortcut the most recurring case: the user is in the dragging
     * state and he is moving his finger.  We want to intercept this
     * motion.
     */
    final int action = ev.getAction();
    if ((action == MotionEvent.ACTION_MOVE) && (mTouchState == TOUCH_STATE_SCROLLING)) {
        return true;
    }

    switch (action & MotionEvent.ACTION_MASK) {
    case MotionEvent.ACTION_MOVE: {
        /*
         * mIsBeingDragged == false, otherwise the shortcut would have caught it. Check
         * whether the user has moved far enough from his original down touch.
         */
        if (mActivePointerId != INVALID_POINTER) {
            determineScrollingStart(ev);
        }
        // if mActivePointerId is INVALID_POINTER, then we must have missed an ACTION_DOWN
        // event. in that case, treat the first occurence of a move event as a ACTION_DOWN
        // i.e. fall through to the next case (don't break)
        // (We sometimes miss ACTION_DOWN events in Workspace because it ignores all events
        // while it's small- this was causing a crash before we checked for INVALID_POINTER)
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        // Remember location of down touch
        mDownMotionX = x;
        mDownMotionY = y;
        mDownScrollX = getScrollX();
        mLastMotionX = x;
        mLastMotionY = y;
        float[] p = mapPointFromViewToParent(this, x, y);
        mParentDownMotionX = p[0];
        mParentDownMotionY = p[1];
        mLastMotionXRemainder = 0;
        mTotalMotionX = 0;
        mActivePointerId = ev.getPointerId(0);

        /*
         * If being flinged and user touches the screen, initiate drag;
         * otherwise don't.  mScroller.isFinished should be false when
         * being flinged.
         */
        final int xDist = Math.abs(mScroller.getFinalX() - mScroller.getCurrX());
        final boolean finishedScrolling = (mScroller.isFinished() || xDist < mTouchSlop);
        if (finishedScrolling) {
            mTouchState = TOUCH_STATE_REST;
            mScroller.abortAnimation();
        } else {
            if (isTouchPointInViewportWithBuffer((int) mDownMotionX, (int) mDownMotionY)) {
                mTouchState = TOUCH_STATE_SCROLLING;
            } else {
                mTouchState = TOUCH_STATE_REST;
            }
        }

        // check if this can be the beginning of a tap on the side of the pages
        // to scroll the current page
        if (!DISABLE_TOUCH_SIDE_PAGES) {
            if (mTouchState != TOUCH_STATE_PREV_PAGE && mTouchState != TOUCH_STATE_NEXT_PAGE) {
                if (getChildCount() > 0) {
                    if (hitsPreviousPage(x, y)) {
                        mTouchState = TOUCH_STATE_PREV_PAGE;
                    } else if (hitsNextPage(x, y)) {
                        mTouchState = TOUCH_STATE_NEXT_PAGE;
                    }
                }
            }
        }
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        resetTouchState();
        break;

    case MotionEvent.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        releaseVelocityTracker();
        break;
    }

    /*
     * The only time we want to intercept motion events is if we are in the
     * drag mode.
     */
    return mTouchState != TOUCH_STATE_REST;
}

From source file:com.n2hsu.launcher.Page.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    if (DISABLE_TOUCH_INTERACTION) {
        return false;
    }/*from   w  w w .  j ava 2  s. c  o  m*/

    /*
     * This method JUST determines whether we want to intercept the motion.
     * If we return true, onTouchEvent will be called and we do the actual
     * scrolling there.
     */
    acquireVelocityTrackerAndAddMovement(ev);

    // Skip touch handling if there are no pages to swipe
    if (getChildCount() <= 0)
        return super.onInterceptTouchEvent(ev);

    /*
     * Shortcut the most recurring case: the user is in the dragging state
     * and he is moving his finger. We want to intercept this motion.
     */
    final int action = ev.getAction();
    if ((action == MotionEvent.ACTION_MOVE) && (mTouchState == TOUCH_STATE_SCROLLING)) {
        return true;
    }

    switch (action & MotionEvent.ACTION_MASK) {
    case MotionEvent.ACTION_MOVE: {
        /*
         * mIsBeingDragged == false, otherwise the shortcut would have
         * caught it. Check whether the user has moved far enough from his
         * original down touch.
         */
        if (mActivePointerId != INVALID_POINTER) {
            determineScrollingStart(ev);
        }
        // if mActivePointerId is INVALID_POINTER, then we must have missed
        // an ACTION_DOWN
        // event. in that case, treat the first occurence of a move event as
        // a ACTION_DOWN
        // i.e. fall through to the next case (don't break)
        // (We sometimes miss ACTION_DOWN events in Workspace because it
        // ignores all events
        // while it's small- this was causing a crash before we checked for
        // INVALID_POINTER)
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        // Remember location of down touch
        mDownMotionX = x;
        mDownMotionY = y;
        mDownScrollX = getScrollX();
        mLastMotionX = x;
        mLastMotionY = y;
        float[] p = mapPointFromViewToParent(this, x, y);
        mParentDownMotionX = p[0];
        mParentDownMotionY = p[1];
        mLastMotionXRemainder = 0;
        mTotalMotionX = 0;
        mActivePointerId = ev.getPointerId(0);

        /*
         * If being flinged and user touches the screen, initiate drag;
         * otherwise don't. mScroller.isFinished should be false when being
         * flinged.
         */
        final int xDist = Math.abs(mScroller.getFinalX() - mScroller.getCurrX());
        final boolean finishedScrolling = (mScroller.isFinished() || xDist < mTouchSlop);
        if (finishedScrolling) {
            mTouchState = TOUCH_STATE_REST;
            mScroller.abortAnimation();
        } else {
            if (isTouchPointInViewportWithBuffer((int) mDownMotionX, (int) mDownMotionY)) {
                mTouchState = TOUCH_STATE_SCROLLING;
            } else {
                mTouchState = TOUCH_STATE_REST;
            }
        }

        // check if this can be the beginning of a tap on the side of the
        // pages
        // to scroll the current page
        if (!DISABLE_TOUCH_SIDE_PAGES) {
            if (mTouchState != TOUCH_STATE_PREV_PAGE && mTouchState != TOUCH_STATE_NEXT_PAGE) {
                if (getChildCount() > 0) {
                    if (hitsPreviousPage(x, y)) {
                        mTouchState = TOUCH_STATE_PREV_PAGE;
                    } else if (hitsNextPage(x, y)) {
                        mTouchState = TOUCH_STATE_NEXT_PAGE;
                    }
                }
            }
        }
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        resetTouchState();
        break;

    case MotionEvent.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        releaseVelocityTracker();
        break;
    }

    /*
     * The only time we want to intercept motion events is if we are in the
     * drag mode.
     */
    return mTouchState != TOUCH_STATE_REST;
}

From source file:org.telepatch.ui.ChatActivity.java

public View createView(LayoutInflater inflater, ViewGroup container) {
    if (fragmentView == null) {
        actionBarLayer.setDisplayHomeAsUpEnabled(true, R.drawable.ic_ab_back);
        if (AndroidUtilities.isTablet()) {
            actionBarLayer.setExtraLeftMargin(4);
        }/*from w  w  w .  j a va  2 s  .c o m*/
        actionBarLayer.setBackOverlay(R.layout.updating_state_layout);
        actionBarLayer.setActionBarMenuOnItemClick(new ActionBarLayer.ActionBarMenuOnItemClick() {
            @Override
            public void onItemClick(int id) {
                if (id == -1) {
                    finishFragment();
                } else if (id == -2) {
                    selectedMessagesIds.clear();
                    selectedMessagesCanCopyIds.clear();
                    actionBarLayer.hideActionMode();
                    updateVisibleRows();
                } else if (id == attach_photo) {
                    try {
                        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                        File image = Utilities.generatePicturePath();
                        if (image != null) {
                            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(image));
                            currentPicturePath = image.getAbsolutePath();
                        }
                        startActivityForResult(takePictureIntent, 0);
                    } catch (Exception e) {
                        FileLog.e("tmessages", e);
                    }
                } else if (id == attach_gallery) {
                    PhotoPickerActivity fragment = new PhotoPickerActivity();
                    fragment.setDelegate(new PhotoPickerActivity.PhotoPickerActivityDelegate() {
                        @Override
                        public void didSelectPhotos(ArrayList<String> photos) {
                            SendMessagesHelper.prepareSendingPhotos(photos, null, dialog_id);
                        }

                        @Override
                        public void startPhotoSelectActivity() {
                            try {
                                Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
                                photoPickerIntent.setType("image/*");
                                startActivityForResult(photoPickerIntent, 1);
                            } catch (Exception e) {
                                FileLog.e("tmessages", e);
                            }
                        }
                    });
                    presentFragment(fragment);
                } else if (id == attach_video) {
                    try {
                        Intent pickIntent = new Intent();
                        pickIntent.setType("video/*");
                        pickIntent.setAction(Intent.ACTION_GET_CONTENT);
                        pickIntent.putExtra(MediaStore.EXTRA_SIZE_LIMIT, (long) (1024 * 1024 * 1000));
                        Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
                        File video = Utilities.generateVideoPath();
                        if (video != null) {
                            if (Build.VERSION.SDK_INT >= 18) {
                                takeVideoIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(video));
                            }
                            takeVideoIntent.putExtra(MediaStore.EXTRA_SIZE_LIMIT, (long) (1024 * 1024 * 1000));
                            currentPicturePath = video.getAbsolutePath();
                        }
                        Intent chooserIntent = Intent.createChooser(pickIntent, "");
                        chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { takeVideoIntent });

                        startActivityForResult(chooserIntent, 2);
                    } catch (Exception e) {
                        FileLog.e("tmessages", e);
                    }
                } else if (id == attach_location) {
                    if (!isGoogleMapsInstalled()) {
                        return;
                    }
                    LocationActivity fragment = new LocationActivity();
                    fragment.setDelegate(new LocationActivity.LocationActivityDelegate() {
                        @Override
                        public void didSelectLocation(double latitude, double longitude) {
                            SendMessagesHelper.getInstance().sendMessage(latitude, longitude, dialog_id);
                            if (chatListView != null) {
                                chatListView.setSelectionFromTop(messages.size() - 1,
                                        -100000 - chatListView.getPaddingTop());
                            }
                            if (paused) {
                                scrollToTopOnResume = true;
                            }
                        }
                    });
                    presentFragment(fragment);
                } else if (id == attach_document) {
                    DocumentSelectActivity fragment = new DocumentSelectActivity();
                    fragment.setDelegate(new DocumentSelectActivity.DocumentSelectActivityDelegate() {
                        @Override
                        public void didSelectFile(DocumentSelectActivity activity, String path) {
                            activity.finishFragment();
                            SendMessagesHelper.prepareSendingDocument(path, path, dialog_id);
                        }

                        @Override
                        public void startDocumentSelectActivity() {
                            try {
                                Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
                                photoPickerIntent.setType("*/*");
                                startActivityForResult(photoPickerIntent, 21);
                            } catch (Exception e) {
                                FileLog.e("tmessages", e);
                            }
                        }
                    });
                    presentFragment(fragment);
                } else if (id == chat_menu_avatar) {
                    if (currentUser != null) {
                        Bundle args = new Bundle();
                        args.putInt("user_id", currentUser.id);
                        if (currentEncryptedChat != null) {
                            args.putLong("dialog_id", dialog_id);
                        }
                        presentFragment(new UserProfileActivity(args));
                    } else if (currentChat != null) {
                        if (info != null && info instanceof TLRPC.TL_chatParticipantsForbidden) {
                            return;
                        }
                        int count = currentChat.participants_count;
                        if (info != null) {
                            count = info.participants.size();
                        }
                        if (count == 0 || currentChat.left || currentChat instanceof TLRPC.TL_chatForbidden) {
                            return;
                        }
                        Bundle args = new Bundle();
                        args.putInt("chat_id", currentChat.id);
                        ChatProfileActivity fragment = new ChatProfileActivity(args);
                        fragment.setChatInfo(info);
                        presentFragment(fragment);
                    }
                } else if (id == copy) {
                    String str = "";
                    ArrayList<Integer> ids = new ArrayList<Integer>(selectedMessagesCanCopyIds.keySet());
                    if (currentEncryptedChat == null) {
                        Collections.sort(ids);
                    } else {
                        Collections.sort(ids, Collections.reverseOrder());
                    }
                    for (Integer messageId : ids) {
                        MessageObject messageObject = selectedMessagesCanCopyIds.get(messageId);
                        if (str.length() != 0) {
                            str += "\n";
                        }
                        if (messageObject.messageOwner.message != null) {
                            str += messageObject.messageOwner.message;
                        } else {
                            str += messageObject.messageText;
                        }
                    }
                    if (str.length() != 0) {
                        if (Build.VERSION.SDK_INT < 11) {
                            android.text.ClipboardManager clipboard = (android.text.ClipboardManager) ApplicationLoader.applicationContext
                                    .getSystemService(Context.CLIPBOARD_SERVICE);
                            clipboard.setText(str);
                        } else {
                            android.content.ClipboardManager clipboard = (android.content.ClipboardManager) ApplicationLoader.applicationContext
                                    .getSystemService(Context.CLIPBOARD_SERVICE);
                            android.content.ClipData clip = android.content.ClipData.newPlainText("label", str);
                            clipboard.setPrimaryClip(clip);
                        }
                    }
                    selectedMessagesIds.clear();
                    selectedMessagesCanCopyIds.clear();
                    actionBarLayer.hideActionMode();
                    updateVisibleRows();
                } else if (id == delete) {
                    ArrayList<Integer> ids = new ArrayList<Integer>(selectedMessagesIds.keySet());
                    ArrayList<Long> random_ids = null;
                    if (currentEncryptedChat != null) {
                        random_ids = new ArrayList<Long>();
                        for (HashMap.Entry<Integer, MessageObject> entry : selectedMessagesIds.entrySet()) {
                            MessageObject msg = entry.getValue();
                            if (msg.messageOwner.random_id != 0 && msg.type != 10) {
                                random_ids.add(msg.messageOwner.random_id);
                            }
                        }
                    }
                    //MessagesController.getInstance().deleteMessages(ids, random_ids, currentEncryptedChat);
                    //TODO qui utilizzo un mio metodo per cancellare i messaggi, cosi' prima mostro un alert
                    deleteMessages(ids, random_ids, currentEncryptedChat);
                    actionBarLayer.hideActionMode();
                } else if (id == forward) {
                    Bundle args = new Bundle();
                    args.putBoolean("onlySelect", true);
                    args.putBoolean("serverOnly", true);
                    args.putString("selectAlertString",
                            LocaleController.getString("ForwardMessagesTo", R.string.ForwardMessagesTo));
                    args.putString("selectAlertStringGroup", LocaleController
                            .getString("ForwardMessagesToGroup", R.string.ForwardMessagesToGroup));
                    MessagesActivity fragment = new MessagesActivity(args);
                    fragment.setDelegate(ChatActivity.this);
                    presentFragment(fragment);
                }
            }
        });

        updateSubtitle();

        if (currentEncryptedChat != null) {
            actionBarLayer.setTitleIcon(R.drawable.ic_lock_white, AndroidUtilities.dp(4));
        } else if (currentChat != null && currentChat.id < 0) {
            actionBarLayer.setTitleIcon(R.drawable.broadcast2, AndroidUtilities.dp(4));
        }

        ActionBarMenu menu = actionBarLayer.createMenu();

        if (currentEncryptedChat != null) {
            timeItem = menu.addItemResource(chat_enc_timer, R.layout.chat_header_enc_layout);
        }

        //TODO aggiungo il pulsante di ricerca
        item_search = menu.addItem(chat_menu_search, R.drawable.ic_ab_search);
        item_search.setIsSearchField(true)
                .setActionBarMenuItemSearchListener(new ActionBarMenuItem.ActionBarMenuItemSearchListener() {
                    @Override
                    public void onSearchExpand() {
                        searching = true;
                    }

                    @Override
                    public void onSearchCollapse() {
                        searching = false;
                        //MessagesController.getInstance().loadMessages(dialog_id, 0, 20, maxMessageId, !cacheEndReaced, minDate, classGuid, false, false);
                        //NotificationCenter.getInstance().postNotificationName(dialogsNeedReload);

                    }

                    @Override
                    public void onTextChanged(final EditText editText) {
                        editText.requestFocus();
                        editText.setOnKeyListener(new View.OnKeyListener() {

                            public boolean onKey(View v, int keyCode, KeyEvent event) {
                                boolean result = false;
                                // se l'evento e' un "tasto premuto" sul tasto enter
                                if ((event.getAction() == KeyEvent.ACTION_DOWN)
                                        && (keyCode == KeyEvent.KEYCODE_ENTER)) {

                                    //fai azione
                                    if (!editText.getText().toString().equals("")) {
                                        searchMessages(dialog_id, editText.getText().toString(),
                                                new FutureSearch());
                                        try {
                                            presentFragment(new SearchResultsActivity(
                                                    doSearchAndBlock(dialog_id, editText.getText().toString()),
                                                    getArguments()));
                                        } catch (ExecutionException e) {
                                            e.printStackTrace();
                                        } catch (InterruptedException e) {
                                            e.printStackTrace();
                                        } catch (NullPointerException e) {
                                            Log.e("xela92",
                                                    "NullPointerException. Forse la connessione di rete e' assente? La ricerca  stata annullata. ");
                                            e.printStackTrace();
                                        }
                                    }
                                    result = true;
                                }
                                return result;
                            }
                        });
                    }

                });

        ActionBarMenuItem item = menu.addItem(chat_menu_attach, R.drawable.ic_ab_attach);
        item.addSubItem(attach_photo, LocaleController.getString("ChatTakePhoto", R.string.ChatTakePhoto),
                R.drawable.ic_attach_photo);
        item.addSubItem(attach_gallery, LocaleController.getString("ChatGallery", R.string.ChatGallery),
                R.drawable.ic_attach_gallery);
        item.addSubItem(attach_video, LocaleController.getString("ChatVideo", R.string.ChatVideo),
                R.drawable.ic_attach_video);
        item.addSubItem(attach_document, LocaleController.getString("ChatDocument", R.string.ChatDocument),
                R.drawable.ic_ab_doc);
        item.addSubItem(attach_location, LocaleController.getString("ChatLocation", R.string.ChatLocation),
                R.drawable.ic_attach_location);
        menuItem = item;

        actionModeViews.clear();

        final ActionBarMenu actionMode = actionBarLayer.createActionMode();
        actionModeViews.add(actionMode.addItem(-2, R.drawable.ic_ab_done_gray, R.drawable.bar_selector_mode));

        FrameLayout layout = new FrameLayout(actionMode.getContext());
        layout.setBackgroundColor(0xffe5e5e5);
        actionMode.addView(layout);
        LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) layout.getLayoutParams();
        layoutParams.width = AndroidUtilities.dp(1);
        layoutParams.height = LinearLayout.LayoutParams.MATCH_PARENT;
        layoutParams.topMargin = AndroidUtilities.dp(12);
        layoutParams.bottomMargin = AndroidUtilities.dp(12);
        layoutParams.gravity = Gravity.CENTER_VERTICAL;
        layout.setLayoutParams(layoutParams);
        actionModeViews.add(layout);

        selectedMessagesCountTextView = new TextView(actionMode.getContext());
        selectedMessagesCountTextView.setTextSize(18);
        selectedMessagesCountTextView.setTextColor(0xff000000);
        selectedMessagesCountTextView.setSingleLine(true);
        selectedMessagesCountTextView.setLines(1);
        selectedMessagesCountTextView.setEllipsize(TextUtils.TruncateAt.END);
        selectedMessagesCountTextView.setPadding(AndroidUtilities.dp(11), 0, 0, 0);
        selectedMessagesCountTextView.setGravity(Gravity.CENTER_VERTICAL);
        selectedMessagesCountTextView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                return true;
            }
        });
        actionMode.addView(selectedMessagesCountTextView);
        layoutParams = (LinearLayout.LayoutParams) selectedMessagesCountTextView.getLayoutParams();
        layoutParams.weight = 1;
        layoutParams.width = 0;
        layoutParams.height = LinearLayout.LayoutParams.MATCH_PARENT;
        selectedMessagesCountTextView.setLayoutParams(layoutParams);

        if (currentEncryptedChat == null) {
            actionModeViews
                    .add(actionMode.addItem(copy, R.drawable.ic_ab_fwd_copy, R.drawable.bar_selector_mode));
            actionModeViews.add(
                    actionMode.addItem(forward, R.drawable.ic_ab_fwd_forward, R.drawable.bar_selector_mode));
            actionModeViews
                    .add(actionMode.addItem(delete, R.drawable.ic_ab_fwd_delete, R.drawable.bar_selector_mode));
        } else {
            actionModeViews
                    .add(actionMode.addItem(copy, R.drawable.ic_ab_fwd_copy, R.drawable.bar_selector_mode));
            actionModeViews
                    .add(actionMode.addItem(delete, R.drawable.ic_ab_fwd_delete, R.drawable.bar_selector_mode));
        }
        actionMode.getItem(copy)
                .setVisibility(selectedMessagesCanCopyIds.size() != 0 ? View.VISIBLE : View.GONE);

        View avatarLayout = menu.addItemResource(chat_menu_avatar, R.layout.chat_header_layout);
        avatarImageView = (BackupImageView) avatarLayout.findViewById(R.id.chat_avatar_image);
        avatarImageView.processDetach = false;
        checkActionBarMenu();

        fragmentView = inflater.inflate(R.layout.chat_layout, container, false);

        View contentView = fragmentView.findViewById(R.id.chat_layout);
        TextView emptyView = (TextView) fragmentView.findViewById(R.id.searchEmptyView);
        emptyViewContainer = fragmentView.findViewById(R.id.empty_view);
        emptyViewContainer.setVisibility(View.GONE);
        emptyViewContainer.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                return true;
            }
        });
        emptyView.setText(LocaleController.getString("NoMessages", R.string.NoMessages));
        chatListView = (LayoutListView) fragmentView.findViewById(R.id.chat_list_view);
        chatListView.setAdapter(chatAdapter = new ChatAdapter(getParentActivity()));
        topPanel = fragmentView.findViewById(R.id.top_panel);
        topPlaneClose = (ImageView) fragmentView.findViewById(R.id.top_plane_close);
        topPanelText = (TextView) fragmentView.findViewById(R.id.top_panel_text);
        bottomOverlay = fragmentView.findViewById(R.id.bottom_overlay);
        bottomOverlayText = (TextView) fragmentView.findViewById(R.id.bottom_overlay_text);
        bottomOverlayChat = fragmentView.findViewById(R.id.bottom_overlay_chat);
        progressView = fragmentView.findViewById(R.id.progressLayout);
        pagedownButton = fragmentView.findViewById(R.id.pagedown_button);
        pagedownButton.setVisibility(View.GONE);

        View progressViewInner = progressView.findViewById(R.id.progressLayoutInner);

        updateContactStatus();

        SharedPreferences preferences = ApplicationLoader.applicationContext.getSharedPreferences("mainconfig",
                Activity.MODE_PRIVATE);
        int selectedBackground = preferences.getInt("selectedBackground", 1000001);
        int selectedColor = preferences.getInt("selectedColor", 0);
        if (selectedColor != 0) {
            contentView.setBackgroundColor(selectedColor);
            chatListView.setCacheColorHint(selectedColor);
        } else {
            chatListView.setCacheColorHint(0);
            try {
                if (selectedBackground == 1000001) {
                    ((SizeNotifierRelativeLayout) contentView).setBackgroundImage(R.drawable.background_hd);
                } else {
                    File toFile = new File(ApplicationLoader.applicationContext.getFilesDir(), "wallpaper.jpg");
                    if (toFile.exists()) {
                        if (ApplicationLoader.cachedWallpaper != null) {
                            ((SizeNotifierRelativeLayout) contentView)
                                    .setBackgroundImage(ApplicationLoader.cachedWallpaper);
                        } else {
                            Drawable drawable = Drawable.createFromPath(toFile.getAbsolutePath());
                            if (drawable != null) {
                                ((SizeNotifierRelativeLayout) contentView).setBackgroundImage(drawable);
                                ApplicationLoader.cachedWallpaper = drawable;
                            } else {
                                contentView.setBackgroundColor(-2693905);
                                chatListView.setCacheColorHint(-2693905);
                            }
                        }
                        isCustomTheme = true;
                    } else {
                        ((SizeNotifierRelativeLayout) contentView).setBackgroundImage(R.drawable.background_hd);
                    }
                }
            } catch (Exception e) {
                contentView.setBackgroundColor(-2693905);
                chatListView.setCacheColorHint(-2693905);
                FileLog.e("tmessages", e);
            }
        }

        if (currentEncryptedChat != null) {
            emptyView.setVisibility(View.GONE);
            View secretChatPlaceholder = contentView.findViewById(R.id.secret_placeholder);
            secretChatPlaceholder.setVisibility(View.VISIBLE);
            if (isCustomTheme) {
                secretChatPlaceholder.setBackgroundResource(R.drawable.system_black);
            } else {
                secretChatPlaceholder.setBackgroundResource(R.drawable.system_blue);
            }
            secretViewStatusTextView = (TextView) contentView.findViewById(R.id.invite_text);
            secretChatPlaceholder.setPadding(AndroidUtilities.dp(16), AndroidUtilities.dp(12),
                    AndroidUtilities.dp(16), AndroidUtilities.dp(12));

            View v = contentView.findViewById(R.id.secret_placeholder);
            v.setVisibility(View.VISIBLE);

            if (currentEncryptedChat.admin_id == UserConfig.getClientUserId()) {
                if (currentUser.first_name.length() > 0) {
                    secretViewStatusTextView
                            .setText(LocaleController.formatString("EncryptedPlaceholderTitleOutgoing",
                                    R.string.EncryptedPlaceholderTitleOutgoing, currentUser.first_name));
                } else {
                    secretViewStatusTextView
                            .setText(LocaleController.formatString("EncryptedPlaceholderTitleOutgoing",
                                    R.string.EncryptedPlaceholderTitleOutgoing, currentUser.last_name));
                }
            } else {
                if (currentUser.first_name.length() > 0) {
                    secretViewStatusTextView
                            .setText(LocaleController.formatString("EncryptedPlaceholderTitleIncoming",
                                    R.string.EncryptedPlaceholderTitleIncoming, currentUser.first_name));
                } else {
                    secretViewStatusTextView
                            .setText(LocaleController.formatString("EncryptedPlaceholderTitleIncoming",
                                    R.string.EncryptedPlaceholderTitleIncoming, currentUser.last_name));
                }
            }

            updateSecretStatus();
        }

        if (isCustomTheme) {
            progressViewInner.setBackgroundResource(R.drawable.system_loader2);
            emptyView.setBackgroundResource(R.drawable.system_black);
        } else {
            progressViewInner.setBackgroundResource(R.drawable.system_loader1);
            emptyView.setBackgroundResource(R.drawable.system_blue);
        }
        emptyView.setPadding(AndroidUtilities.dp(7), AndroidUtilities.dp(1), AndroidUtilities.dp(7),
                AndroidUtilities.dp(1));

        if (currentUser != null && (currentUser.id / 1000 == 333 || currentUser.id % 1000 == 0)) {
            emptyView.setText(LocaleController.getString("GotAQuestion", R.string.GotAQuestion));
        }

        chatListView.setOnItemLongClickListener(onItemLongClickListener);
        chatListView.setOnItemClickListener(onItemClickListener);

        final Rect scrollRect = new Rect();

        chatListView.setOnInterceptTouchEventListener(new LayoutListView.OnInterceptTouchEventListener() {
            @Override
            public boolean onInterceptTouchEvent(MotionEvent event) {
                if (actionBarLayer.isActionModeShowed()) {
                    return false;
                }
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    int x = (int) event.getX();
                    int y = (int) event.getY();
                    int count = chatListView.getChildCount();
                    Rect rect = new Rect();
                    for (int a = 0; a < count; a++) {
                        View view = chatListView.getChildAt(a);
                        int top = view.getTop();
                        int bottom = view.getBottom();
                        view.getLocalVisibleRect(rect);
                        if (top > y || bottom < y) {
                            continue;
                        }
                        if (!(view instanceof ChatMediaCell)) {
                            break;
                        }
                        final ChatMediaCell cell = (ChatMediaCell) view;
                        final MessageObject messageObject = cell.getMessageObject();
                        if (messageObject == null || !messageObject.isSecretPhoto()
                                || !cell.getPhotoImage().isInsideImage(x, y - top)) {
                            break;
                        }
                        File file = FileLoader.getPathToMessage(messageObject.messageOwner);
                        if (!file.exists()) {
                            break;
                        }
                        startX = x;
                        startY = y;
                        chatListView.setOnItemClickListener(null);
                        openSecretPhotoRunnable = new Runnable() {
                            @Override
                            public void run() {
                                if (openSecretPhotoRunnable == null) {
                                    return;
                                }
                                chatListView.requestDisallowInterceptTouchEvent(true);
                                chatListView.setOnItemLongClickListener(null);
                                chatListView.setLongClickable(false);
                                openSecretPhotoRunnable = null;
                                if (sendSecretMessageRead(messageObject)) {
                                    cell.invalidate();
                                }
                                SecretPhotoViewer.getInstance().setParentActivity(getParentActivity());
                                SecretPhotoViewer.getInstance().openPhoto(messageObject);
                            }
                        };
                        AndroidUtilities.RunOnUIThread(openSecretPhotoRunnable, 100);
                        return true;
                    }
                }
                return false;
            }
        });

        chatListView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (openSecretPhotoRunnable != null || SecretPhotoViewer.getInstance().isVisible()) {
                    if (event.getAction() == MotionEvent.ACTION_UP
                            || event.getAction() == MotionEvent.ACTION_CANCEL
                            || event.getAction() == MotionEvent.ACTION_POINTER_UP) {
                        AndroidUtilities.RunOnUIThread(new Runnable() {
                            @Override
                            public void run() {
                                chatListView.setOnItemClickListener(onItemClickListener);
                            }
                        }, 150);
                        if (openSecretPhotoRunnable != null) {
                            AndroidUtilities.CancelRunOnUIThread(openSecretPhotoRunnable);
                            openSecretPhotoRunnable = null;
                            try {
                                Toast.makeText(v.getContext(),
                                        LocaleController.getString("PhotoTip", R.string.PhotoTip),
                                        Toast.LENGTH_SHORT).show();
                            } catch (Exception e) {
                                FileLog.e("tmessages", e);
                            }
                        } else {
                            if (SecretPhotoViewer.getInstance().isVisible()) {
                                AndroidUtilities.RunOnUIThread(new Runnable() {
                                    @Override
                                    public void run() {
                                        chatListView.setOnItemLongClickListener(onItemLongClickListener);
                                        chatListView.setLongClickable(true);
                                    }
                                });
                                SecretPhotoViewer.getInstance().closePhoto();
                            }
                        }
                    } else if (event.getAction() != MotionEvent.ACTION_DOWN) {
                        if (SecretPhotoViewer.getInstance().isVisible()) {
                            return true;
                        } else if (openSecretPhotoRunnable != null) {
                            if (event.getAction() == MotionEvent.ACTION_MOVE) {
                                if (Math.hypot(startX - event.getX(), startY - event.getY()) > AndroidUtilities
                                        .dp(5)) {
                                    AndroidUtilities.CancelRunOnUIThread(openSecretPhotoRunnable);
                                    openSecretPhotoRunnable = null;
                                }
                            } else {
                                AndroidUtilities.CancelRunOnUIThread(openSecretPhotoRunnable);
                                openSecretPhotoRunnable = null;
                            }
                        }
                    }
                }
                return false;
            }
        });

        chatListView.setOnScrollListener(new AbsListView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(AbsListView absListView, int i) {

            }

            @Override
            public void onScroll(AbsListView absListView, int firstVisibleItem, int visibleItemCount,
                    int totalItemCount) {
                if (visibleItemCount > 0) {
                    if (firstVisibleItem <= 10) {
                        if (!endReached && !loading) {
                            if (messagesByDays.size() != 0) {
                                MessagesController.getInstance().loadMessages(dialog_id, 20, maxMessageId,
                                        !cacheEndReaced, minDate, classGuid, false, false, null);
                            } else {
                                MessagesController.getInstance().loadMessages(dialog_id, 20, 0, !cacheEndReaced,
                                        minDate, classGuid, false, false, null);
                            }
                            loading = true;
                        }
                    }
                    if (firstVisibleItem + visibleItemCount >= totalItemCount - 6) {
                        if (!unread_end_reached && !loadingForward) {
                            MessagesController.getInstance().loadMessages(dialog_id, 20, minMessageId, true,
                                    maxDate, classGuid, false, true, null);
                            loadingForward = true;
                        }
                    }
                    if (firstVisibleItem + visibleItemCount == totalItemCount && unread_end_reached) {
                        showPagedownButton(false, true);
                    }
                }
                for (int a = 0; a < visibleItemCount; a++) {
                    View view = absListView.getChildAt(a);
                    if (view instanceof ChatMessageCell) {
                        ChatMessageCell messageCell = (ChatMessageCell) view;
                        messageCell.getLocalVisibleRect(scrollRect);
                        messageCell.setVisiblePart(scrollRect.top, scrollRect.bottom - scrollRect.top);
                    }
                }
            }
        });

        bottomOverlayChatText = (TextView) fragmentView.findViewById(R.id.bottom_overlay_chat_text);
        TextView textView = (TextView) fragmentView.findViewById(R.id.secret_title);
        textView.setText(
                LocaleController.getString("EncryptedDescriptionTitle", R.string.EncryptedDescriptionTitle));
        textView = (TextView) fragmentView.findViewById(R.id.secret_description1);
        textView.setText(LocaleController.getString("EncryptedDescription1", R.string.EncryptedDescription1));
        textView = (TextView) fragmentView.findViewById(R.id.secret_description2);
        textView.setText(LocaleController.getString("EncryptedDescription2", R.string.EncryptedDescription2));
        textView = (TextView) fragmentView.findViewById(R.id.secret_description3);
        textView.setText(LocaleController.getString("EncryptedDescription3", R.string.EncryptedDescription3));
        textView = (TextView) fragmentView.findViewById(R.id.secret_description4);
        textView.setText(LocaleController.getString("EncryptedDescription4", R.string.EncryptedDescription4));

        if (loading && messages.isEmpty()) {
            progressView.setVisibility(View.VISIBLE);
            chatListView.setEmptyView(null);
        } else {
            progressView.setVisibility(View.GONE);
            chatListView.setEmptyView(emptyViewContainer);
        }

        pagedownButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                scrollToLastMessage();
            }
        });

        bottomOverlayChat.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (getParentActivity() == null) {
                    return;
                }
                AlertDialog.Builder builder = new AlertDialog.Builder(getParentActivity());
                builder.setTitle(LocaleController.getString("AppName", R.string.AppName));
                if (currentUser != null && userBlocked) {
                    builder.setMessage(LocaleController.getString("AreYouSureUnblockContact",
                            R.string.AreYouSureUnblockContact));
                    builder.setPositiveButton(LocaleController.getString("OK", R.string.OK),
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialogInterface, int i) {
                                    MessagesController.getInstance().unblockUser(currentUser.id);
                                }
                            });
                } else {
                    builder.setMessage(LocaleController.getString("AreYouSureDeleteThisChat",
                            R.string.AreYouSureDeleteThisChat));
                    builder.setPositiveButton(LocaleController.getString("OK", R.string.OK),
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialogInterface, int i) {
                                    MessagesController.getInstance().deleteDialog(dialog_id, 0, false);
                                    finishFragment();
                                }
                            });
                }
                builder.setNegativeButton(LocaleController.getString("Cancel", R.string.Cancel), null);
                showAlertDialog(builder);
            }
        });

        updateBottomOverlay();

        chatActivityEnterView.setContainerView(getParentActivity(), fragmentView);
    } else {
        ViewGroup parent = (ViewGroup) fragmentView.getParent();
        if (parent != null) {
            parent.removeView(fragmentView);
        }
    }
    return fragmentView;
}

From source file:com.wb.launcher3.Page.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    if (DISABLE_TOUCH_INTERACTION) {
        return false;
    }/*w w  w  . j  ava2s .co  m*/

    /*
     * This method JUST determines whether we want to intercept the motion.
     * If we return true, onTouchEvent will be called and we do the actual
     * scrolling there.
     */
    acquireVelocityTrackerAndAddMovement(ev);

    // Skip touch handling if there are no pages to swipe
    if (getChildCount() <= 0)
        return super.onInterceptTouchEvent(ev);

    /*
     * Shortcut the most recurring case: the user is in the dragging
     * state and he is moving his finger.  We want to intercept this
     * motion.
     */
    final int action = ev.getAction();
    if ((action == MotionEvent.ACTION_MOVE) && (mTouchState == TOUCH_STATE_SCROLLING)) {
        return true;
    }

    switch (action & MotionEvent.ACTION_MASK) {
    case MotionEvent.ACTION_MOVE: {
        //*/zhangwuba add 2014-5-8
        if (getLauncherDeleteAppSate()) {
            return true;
        }
        //*/

        /*
         * mIsBeingDragged == false, otherwise the shortcut would have caught it. Check
         * whether the user has moved far enough from his original down touch.
         */
        if (mActivePointerId != INVALID_POINTER) {
            determineScrollingStart(ev);
        }
        // if mActivePointerId is INVALID_POINTER, then we must have missed an ACTION_DOWN
        // event. in that case, treat the first occurence of a move event as a ACTION_DOWN
        // i.e. fall through to the next case (don't break)
        // (We sometimes miss ACTION_DOWN events in Workspace because it ignores all events
        // while it's small- this was causing a crash before we checked for INVALID_POINTER)
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        // Remember location of down touch
        mDownMotionX = x;
        mDownMotionY = y;
        mDownScrollX = getScrollX();
        mLastMotionX = x;
        mLastMotionY = y;
        float[] p = mapPointFromViewToParent(this, x, y);
        mParentDownMotionX = p[0];
        mParentDownMotionY = p[1];
        mLastMotionXRemainder = 0;
        mTotalMotionX = 0;
        mActivePointerId = ev.getPointerId(0);

        /*
         * If being flinged and user touches the screen, initiate drag;
         * otherwise don't.  mScroller.isFinished should be false when
         * being flinged.
         */
        final int xDist = Math.abs(mScroller.getFinalX() - mScroller.getCurrX());
        final boolean finishedScrolling = (mScroller.isFinished() || xDist < mTouchSlop);
        if (finishedScrolling) {
            mTouchState = TOUCH_STATE_REST;
            mScroller.abortAnimation();
        } else {
            if (isTouchPointInViewportWithBuffer((int) mDownMotionX, (int) mDownMotionY)) {
                mTouchState = TOUCH_STATE_SCROLLING;
            } else {
                mTouchState = TOUCH_STATE_REST;
            }
        }

        // check if this can be the beginning of a tap on the side of the pages
        // to scroll the current page
        if (!DISABLE_TOUCH_SIDE_PAGES) {
            if (mTouchState != TOUCH_STATE_PREV_PAGE && mTouchState != TOUCH_STATE_NEXT_PAGE) {
                if (getChildCount() > 0) {
                    if (hitsPreviousPage(x, y)) {
                        mTouchState = TOUCH_STATE_PREV_PAGE;
                    } else if (hitsNextPage(x, y)) {
                        mTouchState = TOUCH_STATE_NEXT_PAGE;
                    }
                }
            }
        }
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        resetTouchState();
        break;

    case MotionEvent.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        releaseVelocityTracker();
        break;
    }

    /*
     * The only time we want to intercept motion events is if we are in the
     * drag mode.
     */
    return mTouchState != TOUCH_STATE_REST;
}