Example usage for android.view MotionEvent ACTION_MOVE

List of usage examples for android.view MotionEvent ACTION_MOVE

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Introduction

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

Prototype

int ACTION_MOVE

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

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Document

Constant for #getActionMasked : A change has happened during a press gesture (between #ACTION_DOWN and #ACTION_UP ).

Usage

From source file:com.android.yijiang.kzx.widget.betterpickers.radialtimepicker.RadialPickerLayout.java

@Override
public boolean onTouch(View v, MotionEvent event) {
    final float eventX = event.getX();
    final float eventY = event.getY();
    int degrees;/*  ww  w .  jav  a 2  s .co  m*/
    int value;
    final Boolean[] isInnerCircle = new Boolean[1];
    isInnerCircle[0] = false;

    long millis = SystemClock.uptimeMillis();

    switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN:
        if (!mInputEnabled) {
            return true;
        }

        mDownX = eventX;
        mDownY = eventY;

        mLastValueSelected = -1;
        mDoingMove = false;
        mDoingTouch = true;
        // If we're showing the AM/PM, check to see if the user is touching it.
        if (!mHideAmPm) {
            mIsTouchingAmOrPm = mAmPmCirclesView.getIsTouchingAmOrPm(eventX, eventY);
        } else {
            mIsTouchingAmOrPm = -1;
        }
        if (mIsTouchingAmOrPm == AM || mIsTouchingAmOrPm == PM) {
            // If the touch is on AM or PM, set it as "touched" after the tapTimeout
            // in case the user moves their finger quickly.
            tryVibrate();
            mDownDegrees = -1;
            mHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    mAmPmCirclesView.setAmOrPmPressed(mIsTouchingAmOrPm);
                    mAmPmCirclesView.invalidate();
                }
            }, tapTimeout);
        } else {
            // If we're in accessibility mode, force the touch to be legal. Otherwise,
            // it will only register within the given touch target zone.
            boolean forceLegal = AccessibilityManagerCompat.isTouchExplorationEnabled(mAccessibilityManager);
            // Calculate the degrees that is currently being touched.
            mDownDegrees = getDegreesFromCoords(eventX, eventY, forceLegal, isInnerCircle);
            if (mDownDegrees != -1) {
                // If it's a legal touch, set that number as "selected" after the
                // tapTimeout in case the user moves their finger quickly.
                tryVibrate();
                mHandler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        mDoingMove = true;
                        int value = reselectSelector(mDownDegrees, isInnerCircle[0], false, true);
                        mLastValueSelected = value;
                        mListener.onValueSelected(getCurrentItemShowing(), value, false);
                    }
                }, tapTimeout);
            }
        }
        return true;
    case MotionEvent.ACTION_MOVE:
        if (!mInputEnabled) {
            // We shouldn't be in this state, because input is disabled.
            Log.e(TAG, "Input was disabled, but received ACTION_MOVE.");
            return true;
        }

        float dY = Math.abs(eventY - mDownY);
        float dX = Math.abs(eventX - mDownX);

        if (!mDoingMove && dX <= touchSlop && dY <= touchSlop) {
            // Hasn't registered down yet, just slight, accidental movement of finger.
            break;
        }

        // If we're in the middle of touching down on AM or PM, check if we still are.
        // If so, no-op. If not, remove its pressed state. Either way, no need to check
        // for touches on the other circle.
        if (mIsTouchingAmOrPm == AM || mIsTouchingAmOrPm == PM) {
            mHandler.removeCallbacksAndMessages(null);
            int isTouchingAmOrPm = mAmPmCirclesView.getIsTouchingAmOrPm(eventX, eventY);
            if (isTouchingAmOrPm != mIsTouchingAmOrPm) {
                mAmPmCirclesView.setAmOrPmPressed(-1);
                mAmPmCirclesView.invalidate();
                mIsTouchingAmOrPm = -1;
            }
            break;
        }

        if (mDownDegrees == -1) {
            // Original down was illegal, so no movement will register.
            break;
        }

        // We're doing a move along the circle, so move the selection as appropriate.
        mDoingMove = true;
        mHandler.removeCallbacksAndMessages(null);
        degrees = getDegreesFromCoords(eventX, eventY, true, isInnerCircle);
        if (degrees != -1) {
            value = reselectSelector(degrees, isInnerCircle[0], false, true);
            if (value != mLastValueSelected) {
                tryVibrate();
                mLastValueSelected = value;
                mListener.onValueSelected(getCurrentItemShowing(), value, false);
            }
        }
        return true;
    case MotionEvent.ACTION_UP:
        if (!mInputEnabled) {
            // If our touch input was disabled, tell the listener to re-enable us.
            Log.d(TAG, "Input was disabled, but received ACTION_UP.");
            mListener.onValueSelected(ENABLE_PICKER_INDEX, 1, false);
            return true;
        }

        mHandler.removeCallbacksAndMessages(null);
        mDoingTouch = false;

        // If we're touching AM or PM, set it as selected, and tell the listener.
        if (mIsTouchingAmOrPm == AM || mIsTouchingAmOrPm == PM) {
            int isTouchingAmOrPm = mAmPmCirclesView.getIsTouchingAmOrPm(eventX, eventY);
            mAmPmCirclesView.setAmOrPmPressed(-1);
            mAmPmCirclesView.invalidate();

            if (isTouchingAmOrPm == mIsTouchingAmOrPm) {
                mAmPmCirclesView.setAmOrPm(isTouchingAmOrPm);
                if (getIsCurrentlyAmOrPm() != isTouchingAmOrPm) {
                    mListener.onValueSelected(AMPM_INDEX, mIsTouchingAmOrPm, false);
                    setValueForItem(AMPM_INDEX, isTouchingAmOrPm);
                }
            }
            mIsTouchingAmOrPm = -1;
            break;
        }

        // If we have a legal degrees selected, set the value and tell the listener.
        if (mDownDegrees != -1) {
            degrees = getDegreesFromCoords(eventX, eventY, mDoingMove, isInnerCircle);
            if (degrees != -1) {
                value = reselectSelector(degrees, isInnerCircle[0], !mDoingMove, false);
                if (getCurrentItemShowing() == HOUR_INDEX && !mIs24HourMode) {
                    int amOrPm = getIsCurrentlyAmOrPm();
                    if (amOrPm == AM && value == 12) {
                        value = 0;
                    } else if (amOrPm == PM && value != 12) {
                        value += 12;
                    }
                }
                setValueForItem(getCurrentItemShowing(), value);
                mListener.onValueSelected(getCurrentItemShowing(), value, true);
            }
        }
        mDoingMove = false;
        return true;
    default:
        break;
    }
    return false;
}

From source file:com.akshay.protocol10.asplayer.widget.SlidingUpPanelLayout.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);

    if (!isEnabled() || !mIsSlidingEnabled || (mIsUnableToDrag && action != MotionEvent.ACTION_DOWN)) {
        mDragHelper.cancel();/*from ww  w .  j av  a  2 s .  co m*/
        return super.onInterceptTouchEvent(ev);
    }

    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
        mDragHelper.cancel();
        return false;
    }

    final float x = ev.getX();
    final float y = ev.getY();

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        mIsUnableToDrag = false;
        mInitialMotionX = x;
        mInitialMotionY = y;
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        final float adx = Math.abs(x - mInitialMotionX);
        final float ady = Math.abs(y - mInitialMotionY);
        final int dragSlop = mDragHelper.getTouchSlop();

        // Handle any horizontal scrolling on the drag view.
        if (mIsUsingDragViewTouchEvents && adx > dragSlop && ady < dragSlop) {
            return super.onInterceptTouchEvent(ev);
        }

        if ((ady > dragSlop && adx > ady) || !isDragViewUnder((int) mInitialMotionX, (int) mInitialMotionY)) {
            mDragHelper.cancel();
            mIsUnableToDrag = true;
            return false;
        }
        break;
    }
    }

    return mDragHelper.shouldInterceptTouchEvent(ev);
}

From source file:cn.edu.bit.bookstore.bookstore_android.widget.PullToRefreshLayout.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    ensureTarget();//  w w w.  j  a  va 2s  .  com

    final int action = MotionEventCompat.getActionMasked(ev);

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
        mReturningToStart = false;
    }

    if (!isEnabled() || mReturningToStart || canChildScrollUp() || mRefreshing || mNestedScrollInProgress) {
        // Fail fast if we're not in a state where a swipe is possible
        return false;
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN:
        setTargetOffsetTopAndBottom(mOriginalOffsetTop - mCircleView.getTop(), true);
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsBeingDragged = false;
        final float initialDownY = getMotionEventY(ev, mActivePointerId);
        if (initialDownY == -1) {
            return false;
        }
        mInitialDownY = initialDownY;
        break;

    case MotionEvent.ACTION_MOVE:
        if (mActivePointerId == INVALID_POINTER) {
            Log.e(LOG_TAG, "Got ACTION_MOVE event but don't have an active pointer id.");
            return false;
        }

        final float y = getMotionEventY(ev, mActivePointerId);
        if (y == -1) {
            return false;
        }
        final float yDiff = y - mInitialDownY;
        if (yDiff > mTouchSlop && !mIsBeingDragged) {
            mInitialMotionY = mInitialDownY + mTouchSlop;
            mIsBeingDragged = true;
            mProgress.setAlpha(STARTING_PROGRESS_ALPHA);
        }
        break;

    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        mIsBeingDragged = false;
        mActivePointerId = INVALID_POINTER;
        break;
    }

    return mIsBeingDragged;
}

From source file:com.coleman.demo.view.page.DirectionalViewPager.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    /*// w  ww . ja v a 2  s  . c o  m
     * This method JUST determines whether we want to intercept the motion.
     * If we return true, onMotionEvent will be called and we do the actual
     * scrolling there.
     */

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;

    // Always take care of the touch gesture being complete.
    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
        // Release the drag.
        if (DEBUG)
            Log.v(TAG, "Intercept done!");
        mIsBeingDragged = false;
        mIsUnableToDrag = false;
        mActivePointerId = INVALID_POINTER;
        return false;
    }

    // Nothing more to do here if we have decided whether or not we
    // are dragging.
    if (action != MotionEvent.ACTION_DOWN) {
        if (mIsBeingDragged) {
            if (DEBUG)
                Log.v(TAG, "Intercept returning true!");
            return true;
        }
        if (mIsUnableToDrag) {
            if (DEBUG)
                Log.v(TAG, "Intercept returning false!");
            return false;
        }
    }

    switch (action) {
    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.
         */

        /*
         * Locally do absolute value. mLastMotionY is set to the y value
         * of the down event.
         */
        final int activePointerId = mActivePointerId;
        if (activePointerId == INVALID_POINTER && Build.VERSION.SDK_INT > Build.VERSION_CODES.DONUT) {
            // If we don't have a valid id, the touch down wasn't on
            // content.
            break;
        }

        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float y = MotionEventCompat.getY(ev, pointerIndex);
        final float xDiff = Math.abs(x - mLastMotionX);
        final float yDiff = Math.abs(y - mLastMotionY);
        float primaryDiff;
        float secondaryDiff;

        if (mOrientation == HORIZONTAL) {
            primaryDiff = xDiff;
            secondaryDiff = yDiff;
        } else {
            primaryDiff = yDiff;
            secondaryDiff = xDiff;
        }

        if (DEBUG)
            Log.v(TAG, "Moved x to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

        if (primaryDiff > mTouchSlop && primaryDiff > secondaryDiff) {
            if (DEBUG)
                Log.v(TAG, "Starting drag!");
            mIsBeingDragged = true;
            setScrollState(SCROLL_STATE_DRAGGING);
            if (mOrientation == HORIZONTAL) {
                mLastMotionX = x;
            } else {
                mLastMotionY = y;
            }
            setScrollingCacheEnabled(true);
        } else {
            if (secondaryDiff > mTouchSlop) {
                // The finger has moved enough in the vertical
                // direction to be counted as a drag... abort
                // any attempt to drag horizontally, to work correctly
                // with children that have scrolling containers.
                if (DEBUG)
                    Log.v(TAG, "Starting unable to drag!");
                mIsUnableToDrag = true;
            }
        }
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        /*
         * Remember location of down touch. ACTION_DOWN always refers to
         * pointer index 0.
         */
        if (mOrientation == HORIZONTAL) {
            mLastMotionX = mInitialMotion = ev.getX();
            mLastMotionY = ev.getY();
        } else {
            mLastMotionX = ev.getX();
            mLastMotionY = mInitialMotion = ev.getY();
        }
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);

        if (mScrollState == SCROLL_STATE_SETTLING) {
            // Let the user 'catch' the pager as it animates.
            mIsBeingDragged = true;
            mIsUnableToDrag = false;
            setScrollState(SCROLL_STATE_DRAGGING);
        } else {
            completeScroll();
            mIsBeingDragged = false;
            mIsUnableToDrag = false;
        }

        if (DEBUG)
            Log.v(TAG, "Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                    + "mIsUnableToDrag=" + mIsUnableToDrag);
        break;
    }

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

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

From source file:com.bcgtgjyb.huanwen.meizi.view.widget.MySwipeRefreshLayout.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    ensureTarget();/*  ww  w. ja  va 2s.  co  m*/

    final int action = MotionEventCompat.getActionMasked(ev);

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
        mReturningToStart = false;
    }

    //        if (mReturningToStart && action == MotionEvent.ACTION_UP) {
    //            mReturningToStart = false;
    //        }

    if ((!isEnabled() || mReturningToStart || canChildScrollUp() || mRefreshing)) {
        // Fail fast if we're not in a state where a swipe is possible
        return false;
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN:
        Log.i(TAG, "onInterceptTouchEvent  " + mOriginalOffsetTop + "   " + mCircleView.getTop());
        setTargetOffsetTopAndBottom(mOriginalOffsetTop - mCircleView.getTop(), true);
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsBeingDragged = false;
        final float initialDownY = getMotionEventY(ev, mActivePointerId);
        if (initialDownY == -1) {
            return false;
        }
        mInitialDownY = initialDownY;
        break;

    case MotionEvent.ACTION_MOVE:
        if (mActivePointerId == INVALID_POINTER) {
            Log.e(LOG_TAG, "Got ACTION_MOVE event but don't have an active pointer id.");
            return false;
        }

        final float y = getMotionEventY(ev, mActivePointerId);
        if (y == -1) {
            return false;
        }
        final float yDiff = y - mInitialDownY;
        if (yDiff > mTouchSlop && !mIsBeingDragged) {
            mInitialMotionY = mInitialDownY + mTouchSlop;
            mIsBeingDragged = true;
            mProgress.setAlpha(STARTING_PROGRESS_ALPHA);
        }
        break;

    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;

    case MotionEvent.ACTION_UP:
        //guohuanwen
        //                Log.i(TAG, "onInterceptTouchEvent  "+mOriginalOffsetTop +"   "+ mCircleView.getTop());
        //                setTargetOffsetTopAndBottom(mOriginalOffsetTop - mCircleView.getTop(), true);
        //                mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        //                mIsBeingDragged = false;
        //                final float initialDownY2 = getMotionEventY(ev, mActivePointerId);
        //                if (initialDownY2 == -1) {
        //                    return false;
        //                }
        //                mInitialDownY = initialDownY2;
        //                break;
        //guohuanwen

    case MotionEvent.ACTION_CANCEL:
        mIsBeingDragged = false;
        mActivePointerId = INVALID_POINTER;
        break;
    }

    return mIsBeingDragged;
}

From source file:com.android.dialer.widget.OverlappingPaneLayout.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);

    // Preserve the open state based on the last view that was touched.
    if (!mCanSlide && action == MotionEvent.ACTION_DOWN && getChildCount() > 1) {
        // After the first things will be slideable.
        final View secondChild = getChildAt(1);
        if (secondChild != null) {
            mPreservedOpenState = !mDragHelper.isViewUnder(secondChild, (int) ev.getX(), (int) ev.getY());
        }//  w ww  .  ja va 2  s.  c  o  m
    }

    if (!mCanSlide || (mIsUnableToDrag && action != MotionEvent.ACTION_DOWN)) {
        if (!mIsInNestedScroll) {
            mDragHelper.cancel();
        }
        return super.onInterceptTouchEvent(ev);
    }

    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
        if (!mIsInNestedScroll) {
            mDragHelper.cancel();
        }
        return false;
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        mIsUnableToDrag = false;
        final float x = ev.getX();
        final float y = ev.getY();
        mInitialMotionX = x;
        mInitialMotionY = y;

        break;
    }

    case MotionEvent.ACTION_MOVE: {
        final float x = ev.getX();
        final float y = ev.getY();
        final float adx = Math.abs(x - mInitialMotionX);
        final float ady = Math.abs(y - mInitialMotionY);
        final int slop = mDragHelper.getTouchSlop();
        if (ady > slop && adx > ady || !isCapturableViewUnder((int) x, (int) y)) {
            if (!mIsInNestedScroll) {
                mDragHelper.cancel();
            }
            mIsUnableToDrag = true;
            return false;
        }
    }
    }

    final boolean interceptForDrag = mDragHelper.shouldInterceptTouchEvent(ev);

    return interceptForDrag;
}

From source file:cn.com.zzwfang.view.directionalviewpager.DirectionalViewPager.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    /*//from w  w  w.j a  v a2 s  .  c o m
     * This method JUST determines whether we want to intercept the motion.
     * If we return true, onMotionEvent will be called and we do the actual
     * scrolling there.
     */

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;

    // Always take care of the touch gesture being complete.
    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
        // Release the drag.
        if (DEBUG)
            Log.v(TAG, "Intercept done!");
        mIsBeingDragged = false;
        mIsUnableToDrag = false;
        mActivePointerId = INVALID_POINTER;
        return false;
    }

    // Nothing more to do here if we have decided whether or not we
    // are dragging.
    if (action != MotionEvent.ACTION_DOWN) {
        if (mIsBeingDragged) {
            if (DEBUG)
                Log.v(TAG, "Intercept returning true!");
            return true;
        }
        if (mIsUnableToDrag) {
            if (DEBUG)
                Log.v(TAG, "Intercept returning false!");
            return false;
        }
    }

    switch (action) {
    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.
         */

        /*
        * Locally do absolute value. mLastMotionY is set to the y value
        * of the down event.
        */
        final int activePointerId = mActivePointerId;
        if (activePointerId == INVALID_POINTER && Build.VERSION.SDK_INT > Build.VERSION_CODES.DONUT) {
            // If we don't have a valid id, the touch down wasn't on content.
            break;
        }

        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float y = MotionEventCompat.getY(ev, pointerIndex);
        final float xDiff = Math.abs(x - mLastMotionX);
        final float yDiff = Math.abs(y - mLastMotionY);
        float primaryDiff;
        float secondaryDiff;

        if (mOrientation == HORIZONTAL) {
            primaryDiff = xDiff;
            secondaryDiff = yDiff;
        } else {
            primaryDiff = yDiff;
            secondaryDiff = xDiff;
        }

        if (DEBUG)
            Log.v(TAG, "Moved x to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

        if (primaryDiff > mTouchSlop && primaryDiff > secondaryDiff) {
            if (DEBUG)
                Log.v(TAG, "Starting drag!");
            mIsBeingDragged = true;
            setScrollState(SCROLL_STATE_DRAGGING);
            if (mOrientation == HORIZONTAL) {
                mLastMotionX = x;
            } else {
                mLastMotionY = y;
            }
            setScrollingCacheEnabled(true);
        } else {
            if (secondaryDiff > mTouchSlop) {
                // The finger has moved enough in the vertical
                // direction to be counted as a drag...  abort
                // any attempt to drag horizontally, to work correctly
                // with children that have scrolling containers.
                if (DEBUG)
                    Log.v(TAG, "Starting unable to drag!");
                mIsUnableToDrag = true;
            }
        }
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        /*
         * Remember location of down touch.
         * ACTION_DOWN always refers to pointer index 0.
         */
        if (mOrientation == HORIZONTAL) {
            mLastMotionX = mInitialMotion = ev.getX();
            mLastMotionY = ev.getY();
        } else {
            mLastMotionX = ev.getX();
            mLastMotionY = mInitialMotion = ev.getY();
        }
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);

        if (mScrollState == SCROLL_STATE_SETTLING) {
            // Let the user 'catch' the pager as it animates.
            mIsBeingDragged = true;
            mIsUnableToDrag = false;
            setScrollState(SCROLL_STATE_DRAGGING);
        } else {
            completeScroll();
            mIsBeingDragged = false;
            mIsUnableToDrag = false;
        }

        if (DEBUG)
            Log.v(TAG, "Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                    + "mIsUnableToDrag=" + mIsUnableToDrag);
        break;
    }

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

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

From source file:com.apptentive.android.sdk.view.ApptentiveNestedScrollView.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    initVelocityTrackerIfNotExists();/*from   w ww. j a  v a2s  .  c  om*/

    MotionEvent vtev = MotionEvent.obtain(ev);

    final int actionMasked = MotionEventCompat.getActionMasked(ev);

    if (actionMasked == MotionEvent.ACTION_DOWN) {
        mNestedYOffset = 0;
    }
    vtev.offsetLocation(0, mNestedYOffset);

    switch (actionMasked) {
    case MotionEvent.ACTION_DOWN: {
        if (getChildCount() == 0) {
            return false;
        }
        if ((mIsBeingDragged = !mScroller.isFinished())) {
            final ViewParent parent = getParent();
            if (parent != null) {
                parent.requestDisallowInterceptTouchEvent(true);
            }
        }

        /*
         * 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
        mLastMotionY = (int) ev.getY();
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL);
        break;
    }
    case MotionEvent.ACTION_MOVE:
        final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        if (activePointerIndex == -1) {
            Log.e(TAG, "Invalid pointerId=" + mActivePointerId + " in onTouchEvent");
            break;
        }

        final int y = (int) MotionEventCompat.getY(ev, activePointerIndex);
        int deltaY = mLastMotionY - y;
        if (dispatchNestedPreScroll(0, deltaY, mScrollConsumed, mScrollOffset)) {
            deltaY -= mScrollConsumed[1];
            vtev.offsetLocation(0, mScrollOffset[1]);
            mNestedYOffset += mScrollOffset[1];
        }
        if (!mIsBeingDragged && Math.abs(deltaY) > mTouchSlop) {
            final ViewParent parent = getParent();
            if (parent != null) {
                parent.requestDisallowInterceptTouchEvent(true);
            }
            mIsBeingDragged = true;
            if (deltaY > 0) {
                deltaY -= mTouchSlop;
            } else {
                deltaY += mTouchSlop;
            }
        }
        if (mIsBeingDragged) {
            // Scroll to follow the motion event
            mLastMotionY = y - mScrollOffset[1];

            final int oldY = getScrollY();
            final int range = getScrollRange();
            final int overscrollMode = ViewCompat.getOverScrollMode(this);
            boolean canOverscroll = overscrollMode == ViewCompat.OVER_SCROLL_ALWAYS
                    || (overscrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && range > 0);

            // Calling overScrollByCompat will call onOverScrolled, which
            // calls onScrollChanged if applicable.
            if (overScrollByCompat(0, deltaY, 0, getScrollY(), 0, range, 0, 0, true)
                    && !hasNestedScrollingParent()) {
                // Break our velocity if we hit a scroll barrier.
                mVelocityTracker.clear();
            }

            final int scrolledDeltaY = getScrollY() - oldY;
            final int unconsumedY = deltaY - scrolledDeltaY;
            if (dispatchNestedScroll(0, scrolledDeltaY, 0, unconsumedY, mScrollOffset)) {
                mLastMotionY -= mScrollOffset[1];
                vtev.offsetLocation(0, mScrollOffset[1]);
                mNestedYOffset += mScrollOffset[1];
            } else if (canOverscroll) {
                ensureGlows();
                final int pulledToY = oldY + deltaY;
                if (pulledToY < 0) {
                    mEdgeGlowTop.onPull((float) deltaY / getHeight(),
                            MotionEventCompat.getX(ev, activePointerIndex) / getWidth());
                    if (!mEdgeGlowBottom.isFinished()) {
                        mEdgeGlowBottom.onRelease();
                    }
                } else if (pulledToY > range) {
                    mEdgeGlowBottom.onPull((float) deltaY / getHeight(),
                            1.f - MotionEventCompat.getX(ev, activePointerIndex) / getWidth());
                    if (!mEdgeGlowTop.isFinished()) {
                        mEdgeGlowTop.onRelease();
                    }
                }
                if (mEdgeGlowTop != null && (!mEdgeGlowTop.isFinished() || !mEdgeGlowBottom.isFinished())) {
                    ViewCompat.postInvalidateOnAnimation(this);
                }
            }
        }
        break;
    case MotionEvent.ACTION_UP:
        if (mIsBeingDragged) {
            final VelocityTracker velocityTracker = mVelocityTracker;
            velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
            int initialVelocity = (int) VelocityTrackerCompat.getYVelocity(velocityTracker, mActivePointerId);

            if ((Math.abs(initialVelocity) > mMinimumVelocity)) {
                flingWithNestedDispatch(-initialVelocity);
            } else if (mScroller.springBack(getScrollX(), getScrollY(), 0, 0, 0, getScrollRange())) {
                ViewCompat.postInvalidateOnAnimation(this);
            }
        }
        mActivePointerId = INVALID_POINTER;
        endDrag();
        break;
    case MotionEvent.ACTION_CANCEL:
        if (mIsBeingDragged && getChildCount() > 0) {
            if (mScroller.springBack(getScrollX(), getScrollY(), 0, 0, 0, getScrollRange())) {
                ViewCompat.postInvalidateOnAnimation(this);
            }
        }
        mActivePointerId = INVALID_POINTER;
        endDrag();
        break;
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int index = MotionEventCompat.getActionIndex(ev);
        mLastMotionY = (int) MotionEventCompat.getY(ev, index);
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        break;
    }
    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        mLastMotionY = (int) MotionEventCompat.getY(ev,
                MotionEventCompat.findPointerIndex(ev, mActivePointerId));
        break;
    }

    if (mVelocityTracker != null) {
        mVelocityTracker.addMovement(vtev);
    }
    vtev.recycle();
    return true;
}

From source file:com.codetroopers.betterpickers.radialtimepicker.RadialPickerLayout.java

@Override
public boolean onTouch(View v, MotionEvent event) {
    final float eventX = event.getX();
    final float eventY = event.getY();
    int degrees;//from  w w  w . java2s .  co  m
    int value;
    final Boolean[] isInnerCircle = new Boolean[1];
    isInnerCircle[0] = false;

    switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN:
        if (!mInputEnabled) {
            return true;
        }

        mDownX = eventX;
        mDownY = eventY;

        mLastValueSelected = -1;
        mDoingMove = false;
        mDoingTouch = true;
        // If we're showing the AM/PM, check to see if the user is touching it.
        if (!mHideAmPm) {
            mIsTouchingAmOrPm = mAmPmCirclesView.getIsTouchingAmOrPm(eventX, eventY);
        } else {
            mIsTouchingAmOrPm = -1;
        }
        if (mIsTouchingAmOrPm == AM || mIsTouchingAmOrPm == PM) {
            // If the touch is on AM or PM, set it as "touched" after the tapTimeout
            // in case the user moves their finger quickly.
            mHapticFeedbackController.tryVibrate();
            mDownDegrees = -1;
            mHandler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    mAmPmCirclesView.setAmOrPmPressed(mIsTouchingAmOrPm);
                    mAmPmCirclesView.invalidate();
                }
            }, TAP_TIMEOUT);
        } else {
            // If we're in accessibility mode, force the touch to be legal. Otherwise,
            // it will only register within the given touch target zone.
            boolean forceLegal = AccessibilityManagerCompat.isTouchExplorationEnabled(mAccessibilityManager);
            // Calculate the degrees that is currently being touched.
            mDownDegrees = getDegreesFromCoords(eventX, eventY, forceLegal, isInnerCircle);
            if (mDownDegrees != -1) {
                // If it's a legal touch, set that number as "selected" after the
                // tapTimeout in case the user moves their finger quickly.
                mHapticFeedbackController.tryVibrate();
                mHandler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        mDoingMove = true;
                        int value = reselectSelector(mDownDegrees, isInnerCircle[0], false, true);
                        mLastValueSelected = value;
                        mListener.onValueSelected(getCurrentItemShowing(), value, false);
                    }
                }, TAP_TIMEOUT);
            }
        }
        return true;
    case MotionEvent.ACTION_MOVE:
        if (!mInputEnabled) {
            // We shouldn't be in this state, because input is disabled.
            Log.e(TAG, "Input was disabled, but received ACTION_MOVE.");
            return true;
        }

        float dY = Math.abs(eventY - mDownY);
        float dX = Math.abs(eventX - mDownX);

        if (!mDoingMove && dX <= TOUCH_SLOP && dY <= TOUCH_SLOP) {
            // Hasn't registered down yet, just slight, accidental movement of finger.
            break;
        }

        // If we're in the middle of touching down on AM or PM, check if we still are.
        // If so, no-op. If not, remove its pressed state. Either way, no need to check
        // for touches on the other circle.
        if (mIsTouchingAmOrPm == AM || mIsTouchingAmOrPm == PM) {
            mHandler.removeCallbacksAndMessages(null);
            int isTouchingAmOrPm = mAmPmCirclesView.getIsTouchingAmOrPm(eventX, eventY);
            if (isTouchingAmOrPm != mIsTouchingAmOrPm) {
                mAmPmCirclesView.setAmOrPmPressed(-1);
                mAmPmCirclesView.invalidate();
                mIsTouchingAmOrPm = -1;
            }
            break;
        }

        if (mDownDegrees == -1) {
            // Original down was illegal, so no movement will register.
            break;
        }

        // We're doing a move along the circle, so move the selection as appropriate.
        mDoingMove = true;
        mHandler.removeCallbacksAndMessages(null);
        degrees = getDegreesFromCoords(eventX, eventY, true, isInnerCircle);
        if (degrees != -1) {
            value = reselectSelector(degrees, isInnerCircle[0], false, true);
            if (value != mLastValueSelected) {
                mHapticFeedbackController.tryVibrate();
                mLastValueSelected = value;
                mListener.onValueSelected(getCurrentItemShowing(), value, false);
            }
        }
        return true;
    case MotionEvent.ACTION_UP:
        if (!mInputEnabled) {
            // If our touch input was disabled, tell the listener to re-enable us.
            Log.d(TAG, "Input was disabled, but received ACTION_UP.");
            mListener.onValueSelected(ENABLE_PICKER_INDEX, 1, false);
            return true;
        }

        mHandler.removeCallbacksAndMessages(null);
        mDoingTouch = false;

        // If we're touching AM or PM, set it as selected, and tell the listener.
        if (mIsTouchingAmOrPm == AM || mIsTouchingAmOrPm == PM) {
            int isTouchingAmOrPm = mAmPmCirclesView.getIsTouchingAmOrPm(eventX, eventY);
            mAmPmCirclesView.setAmOrPmPressed(-1);
            mAmPmCirclesView.invalidate();

            if (isTouchingAmOrPm == mIsTouchingAmOrPm) {
                mAmPmCirclesView.setAmOrPm(isTouchingAmOrPm);
                if (getIsCurrentlyAmOrPm() != isTouchingAmOrPm) {
                    mListener.onValueSelected(AMPM_INDEX, mIsTouchingAmOrPm, false);
                    setValueForItem(AMPM_INDEX, isTouchingAmOrPm);
                }
            }
            mIsTouchingAmOrPm = -1;
            break;
        }

        // If we have a legal degrees selected, set the value and tell the listener.
        if (mDownDegrees != -1) {
            degrees = getDegreesFromCoords(eventX, eventY, mDoingMove, isInnerCircle);
            if (degrees != -1) {
                value = reselectSelector(degrees, isInnerCircle[0], !mDoingMove, false);
                if (getCurrentItemShowing() == HOUR_INDEX && !mIs24HourMode) {
                    int amOrPm = getIsCurrentlyAmOrPm();
                    if (amOrPm == AM && value == 12) {
                        value = 0;
                    } else if (amOrPm == PM && value != 12) {
                        value += 12;
                    }
                }
                setValueForItem(getCurrentItemShowing(), value);
                mListener.onValueSelected(getCurrentItemShowing(), value, true);
            }
        }
        mDoingMove = false;
        return true;
    default:
        break;
    }
    return false;
}

From source file:anabolicandroids.chanobol.util.swipebottom.SwipeRefreshLayoutBottom.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    ensureTarget();/*from   w  w w .  ja  v  a 2s. co m*/

    final int action = MotionEventCompat.getActionMasked(ev);

    if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
        mReturningToStart = false;
    }

    //if (!isEnabled() || mReturningToStart || canChildScrollUp() || mRefreshing) {
    if (!isEnabled() || mReturningToStart || canChildScrollDown() || mRefreshing) { // TODO
        // Fail fast if we're not in a state where a swipe is possible
        return false;
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN:
        setTargetOffsetTopAndBottom(mOriginalOffsetTop - mCircleView.getTop(), true);
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsBeingDragged = false;
        final float initialMotionY = getMotionEventY(ev, mActivePointerId);
        if (initialMotionY == -1) {
            return false;
        }
        mInitialMotionY = initialMotionY;

    case MotionEvent.ACTION_MOVE:
        if (mActivePointerId == INVALID_POINTER) {
            Log.e(LOG_TAG, "Got ACTION_MOVE event but don't have an active pointer id.");
            return false;
        }

        final float y = getMotionEventY(ev, mActivePointerId);
        if (y == -1) {
            return false;
        }
        //final float yDiff = y - mInitialMotionY;
        final float yDiff = mInitialMotionY - y; // TODO                
        if (yDiff > mTouchSlop && !mIsBeingDragged) {
            mIsBeingDragged = true;
            mProgress.setAlpha(STARTING_PROGRESS_ALPHA);
        }
        break;

    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        mIsBeingDragged = false;
        mActivePointerId = INVALID_POINTER;
        break;
    }

    return mIsBeingDragged;
}