Example usage for android.view ViewParent requestDisallowInterceptTouchEvent

Introduction

In this page you can find the example usage for android.view ViewParent requestDisallowInterceptTouchEvent.

Prototype

public void requestDisallowInterceptTouchEvent(boolean disallowIntercept);

Source Link

Document

Called when a child does not want this parent and its ancestors to intercept touch events with ViewGroup#onInterceptTouchEvent(MotionEvent) .

Usage

From source file:com.sflib.CustomView.photoview.PhotoViewAttacher.java

@SuppressLint("ClickableViewAccessibility")
@Override/* ww  w .  j  a va  2 s.  c  om*/
public boolean onTouch(View v, MotionEvent ev) {
    boolean handled = false;

    if (mZoomEnabled && hasDrawable((ImageView) v)) {
        ViewParent parent = v.getParent();
        switch (ev.getAction()) {
        case ACTION_DOWN:
            // First, disable the Parent from intercepting the touch
            // event
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(true);
            } else {
                L.info(LOG_TAG, "onTouch getParent() returned null");
            }

            // If we're flinging, and the user presses down, cancel
            // fling
            cancelFling();
            break;

        case ACTION_CANCEL:
        case ACTION_UP:
            // If the user has zoomed less than min scale, zoom back
            // to min scale
            if (getScale() < mMinScale) {
                RectF rect = getDisplayRect();
                if (null != rect) {
                    v.post(new AnimatedZoomRunnable(getScale(), mMinScale, rect.centerX(), rect.centerY()));
                    handled = true;
                }
            }
            break;
        }

        // Try the Scale/Drag detector
        if (null != mScaleDragDetector) {
            boolean wasScaling = mScaleDragDetector.isScaling();
            boolean wasDragging = mScaleDragDetector.isDragging();

            handled = mScaleDragDetector.onTouchEvent(ev);

            boolean didntScale = !wasScaling && !mScaleDragDetector.isScaling();
            boolean didntDrag = !wasDragging && !mScaleDragDetector.isDragging();

            mBlockParentIntercept = didntScale && didntDrag;
        }

        // Check to see if the user double tapped
        if (null != mGestureDetector && mGestureDetector.onTouchEvent(ev)) {
            handled = true;
        }

    }

    return handled;
}

---

From source file:xue.myapp.common.photoview.PhotoViewAttacher.java

@SuppressLint("ClickableViewAccessibility")
@Override/*from w w w  . ja  va 2s.  c o m*/
public boolean onTouch(View v, MotionEvent ev) {
    boolean handled = false;

    if (mZoomEnabled && hasDrawable((ImageView) v)) {
        ViewParent parent = v.getParent();
        switch (ev.getAction()) {
        case ACTION_DOWN:
            // First, disable the Parent from intercepting the touch
            // event
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(true);
            } else {
                LogUtil.i(LOG_TAG, "onTouch getParent() returned null");
            }

            // If we're flinging, and the user presses down, cancel
            // fling
            cancelFling();
            break;

        case ACTION_CANCEL:
        case ACTION_UP:
            // If the user has zoomed less than min scale, zoom back
            // to min scale
            if (getScale() < mMinScale) {
                RectF rect = getDisplayRect();
                if (null != rect) {
                    v.post(new AnimatedZoomRunnable(getScale(), mMinScale, rect.centerX(), rect.centerY()));
                    handled = true;
                }
            }
            break;
        }

        // Try the Scale/Drag detector
        if (null != mScaleDragDetector) {
            boolean wasScaling = mScaleDragDetector.isScaling();
            boolean wasDragging = mScaleDragDetector.isDragging();

            handled = mScaleDragDetector.onTouchEvent(ev);

            boolean didntScale = !wasScaling && !mScaleDragDetector.isScaling();
            boolean didntDrag = !wasDragging && !mScaleDragDetector.isDragging();

            mBlockParentIntercept = didntScale && didntDrag;
        }

        // Check to see if the user double tapped
        if (null != mGestureDetector && mGestureDetector.onTouchEvent(ev)) {
            handled = true;
        }

    }

    return handled;
}

---

From source file:com.kf5.sdk.system.photoview.PhotoViewAttacher.java

@SuppressLint("ClickableViewAccessibility")
@Override//from w w w .j  a  va 2  s  .  c  om
public boolean onTouch(View v, MotionEvent ev) {
    boolean handled = false;

    if (mZoomEnabled && hasDrawable((ImageView) v)) {
        ViewParent parent = v.getParent();
        switch (ev.getAction()) {
        case ACTION_DOWN:
            // First, disable the Parent from intercepting the touch
            // event
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(true);
            } else {
            }

            // If we're flinging, and the user presses down, cancel
            // fling
            cancelFling();
            break;

        case ACTION_CANCEL:
        case ACTION_UP:
            // If the user has zoomed less than min scale, zoom back
            // to min scale
            if (getScale() < mMinScale) {
                RectF rect = getDisplayRect();
                if (null != rect) {
                    v.post(new AnimatedZoomRunnable(getScale(), mMinScale, rect.centerX(), rect.centerY()));
                    handled = true;
                }
            }
            break;
        }

        // Try the Scale/Drag detector
        if (null != mScaleDragDetector) {
            boolean wasScaling = mScaleDragDetector.isScaling();
            boolean wasDragging = mScaleDragDetector.isDragging();

            handled = mScaleDragDetector.onTouchEvent(ev);

            boolean didntScale = !wasScaling && !mScaleDragDetector.isScaling();
            boolean didntDrag = !wasDragging && !mScaleDragDetector.isDragging();

            mBlockParentIntercept = didntScale && didntDrag;
        }

        // Check to see if the user double tapped
        if (null != mGestureDetector && mGestureDetector.onTouchEvent(ev)) {
            handled = true;
        }

    }

    return handled;
}

---

From source file:com.cylan.jiafeigou.support.photoview.PhotoViewAttacher.java

@SuppressLint("ClickableViewAccessibility")
@Override//from  w w w  . j  a  va 2 s .c  o  m
public boolean onTouch(View v, MotionEvent ev) {
    boolean handled = false;

    if (mZoomEnabled && hasDrawable((ImageView) v)) {
        ViewParent parent = v.getParent();
        switch (ev.getAction()) {
        case ACTION_DOWN:
            // First, disable the Parent from intercepting the touch
            // event
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(true);
            } else {
                //                        LogManager.getLogger().i(LOG_TAG, "onTouch getParent() returned null");
            }

            // If we're flinging, and the user presses down, cancel
            // fling
            cancelFling();
            break;

        case ACTION_CANCEL:
        case ACTION_UP:
            // If the user has zoomed less than min scale, zoom back
            // to min scale
            if (getScale() < mMinScale) {
                RectF rect = getDisplayRect();
                if (null != rect) {
                    v.post(new AnimatedZoomRunnable(getScale(), mMinScale, rect.centerX(), rect.centerY()));
                    handled = true;
                }
            }
            break;
        }

        // Try the Scale/Drag detector
        if (null != mScaleDragDetector) {
            boolean wasScaling = mScaleDragDetector.isScaling();
            boolean wasDragging = mScaleDragDetector.isDragging();

            handled = mScaleDragDetector.onTouchEvent(ev);

            boolean didntScale = !wasScaling && !mScaleDragDetector.isScaling();
            boolean didntDrag = !wasDragging && !mScaleDragDetector.isDragging();

            mBlockParentIntercept = didntScale && didntDrag;
        }

        // Check to see if the user double tapped
        if (null != mGestureDetector && mGestureDetector.onTouchEvent(ev)) {
            handled = true;
        }

    }

    return handled;
}

---

From source file:com.example.g40_70m.framedemo.view.photoview.PhotoViewAttacher.java

@SuppressLint("ClickableViewAccessibility")
@Override//from   w  w  w.  j av a  2  s .c o  m
public boolean onTouch(View v, MotionEvent ev) {
    boolean handled = false;

    if (mZoomEnabled && hasDrawable((ImageView) v)) {
        ViewParent parent = v.getParent();
        switch (ev.getAction()) {
        case ACTION_DOWN:
            // First, disable the Parent from intercepting the touch
            // event
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(true);
            } else {
                L.w("onTouch getParent() returned null");
            }

            // If we're flinging, and the user presses down, cancel
            // fling
            cancelFling();
            break;

        case ACTION_CANCEL:
        case ACTION_UP:
            // If the user has zoomed less than min scale, zoom back
            // to min scale
            if (getScale() < mMinScale) {
                RectF rect = getDisplayRect();
                if (null != rect) {
                    v.post(new AnimatedZoomRunnable(getScale(), mMinScale, rect.centerX(), rect.centerY()));
                    handled = true;
                }
            }
            break;
        }

        // Try the Scale/Drag detector
        if (null != mScaleDragDetector) {
            boolean wasScaling = mScaleDragDetector.isScaling();
            boolean wasDragging = mScaleDragDetector.isDragging();

            handled = mScaleDragDetector.onTouchEvent(ev);

            boolean didntScale = !wasScaling && !mScaleDragDetector.isScaling();
            boolean didntDrag = !wasDragging && !mScaleDragDetector.isDragging();

            mBlockParentIntercept = didntScale && didntDrag;
        }

        // Check to see if the user double tapped
        if (null != mGestureDetector && mGestureDetector.onTouchEvent(ev)) {
            handled = true;
        }

    }

    return handled;
}

---

From source file:atownsend.swipeopenhelper.SwipeOpenItemTouchHelper.java

/**
 * Starts dragging or swiping the given View. Call with null if you want to clear it.
 *
 * @param selected The ViewHolder to swipe. Can be null if you want to cancel the
 * current action//from www . j a  va  2 s .  c  o m
 * @param actionState The type of action
 */
private void select(SwipeOpenViewHolder selected, int actionState) {
    if (selected == this.selected && actionState == this.actionState) {
        return;
    }
    final int prevActionState = this.actionState;
    // prevent duplicate animations
    endRecoverAnimation(selected, true);
    this.actionState = actionState;
    int actionStateMask = (1 << (DIRECTION_FLAG_COUNT + DIRECTION_FLAG_COUNT * actionState)) - 1;
    boolean preventLayout = false;

    // close the previously selected view holder if we're swiping a new one and the flag is true
    if (closeOnAction && selected != null && prevSelected != null && selected != prevSelected) {
        closeOpenHolder(prevSelected);
        prevSelected = null;
        preventLayout = true;
    }

    // if we've got any opened positions, and closeOnAction is true, close them
    // NOTE: only real way for this to happen is to have a view opened during configuration change
    // that then has its' state saved
    if (closeOnAction && openedPositions.size() > 0) {
        for (int i = 0; i < openedPositions.size(); i++) {
            View child = recyclerView.getChildAt(openedPositions.keyAt(0));
            if (child.getParent() != null) {
                RecyclerView.ViewHolder holder = recyclerView.getChildViewHolder(child);
                // if our selected isn't the opened position, close it
                if (holder instanceof SwipeOpenViewHolder && (selected == null
                        || holder.getAdapterPosition() != selected.getViewHolder().getAdapterPosition())) {
                    closeOpenHolder((SwipeOpenViewHolder) holder);
                }
            }
            openedPositions.removeAt(i);
        }
    }

    if (this.selected != null) {
        prevSelected = this.selected;
        // we've changed selection, we need to animate it back
        if (prevSelected.getViewHolder().itemView.getParent() != null) {
            final int swipeDir = checkPreviousSwipeDirection(prevSelected.getViewHolder());
            releaseVelocityTracker();
            // find where we should animate to
            final float targetTranslateX, targetTranslateY;
            getSelectedDxDy(tmpPosition);

            final float currentTranslateX = tmpPosition[0];
            final float currentTranslateY = tmpPosition[1];
            final float absTranslateX = Math.abs(currentTranslateX);
            final float absTranslateY = Math.abs(currentTranslateY);
            final SavedOpenState state;
            switch (swipeDir) {
            case LEFT:
            case START:
                targetTranslateY = 0;
                // check if we need to close or go to the open position
                if (absTranslateX > prevSelected.getEndHiddenViewSize() / 2) {
                    targetTranslateX = prevSelected.getEndHiddenViewSize() * Math.signum(dX);
                    state = SavedOpenState.END_OPEN;
                } else {
                    targetTranslateX = 0;
                    state = null;
                }
                break;
            case RIGHT:
            case END:
                targetTranslateY = 0;
                if (absTranslateX > prevSelected.getStartHiddenViewSize() / 2) {
                    targetTranslateX = prevSelected.getStartHiddenViewSize() * Math.signum(dX);
                    state = SavedOpenState.START_OPEN;
                } else {
                    targetTranslateX = 0;
                    state = null;
                }
                break;
            case UP:
                targetTranslateX = 0;
                if (absTranslateY > prevSelected.getEndHiddenViewSize() / 2) {
                    targetTranslateY = prevSelected.getEndHiddenViewSize() * Math.signum(dY);
                    state = SavedOpenState.END_OPEN;
                } else {
                    targetTranslateY = 0;
                    state = null;
                }
                break;
            case DOWN:
                targetTranslateX = 0;
                if (absTranslateY > prevSelected.getStartHiddenViewSize() / 2) {
                    targetTranslateY = prevSelected.getStartHiddenViewSize() * Math.signum(dY);
                    state = SavedOpenState.START_OPEN;
                } else {
                    targetTranslateY = 0;
                    state = null;
                }
                break;
            default:
                state = null;
                targetTranslateX = 0;
                targetTranslateY = 0;
            }
            // if state == null, we're closing it
            if (state == null) {
                openedPositions.remove(prevSelected.getViewHolder().getAdapterPosition());
            } else {
                openedPositions.put(prevSelected.getViewHolder().getAdapterPosition(), state);
            }

            final RecoverAnimation rv = new RecoverAnimation(prevSelected, prevActionState, currentTranslateX,
                    currentTranslateY, targetTranslateX, targetTranslateY);
            final long duration = callback.getAnimationDuration(recyclerView, ANIMATION_TYPE_SWIPE,
                    targetTranslateX - currentTranslateX, targetTranslateY - currentTranslateY);
            rv.setDuration(duration);
            recoverAnimations.add(rv);
            rv.start();
            preventLayout = true;
        } else {
            callback.clearView(recyclerView, prevSelected);
        }
        this.selected = null;
    }
    if (selected != null) {
        selectedFlags = (callback.getAbsoluteMovementFlags(recyclerView, selected.getViewHolder())
                & actionStateMask) >> (this.actionState * DIRECTION_FLAG_COUNT);
        selectedStartX = selected.getViewHolder().itemView.getLeft()
                + ViewCompat.getTranslationX(selected.getSwipeView());
        selectedStartY = selected.getViewHolder().itemView.getTop()
                + ViewCompat.getTranslationY(selected.getSwipeView());
        this.selected = selected;
    }
    final ViewParent rvParent = recyclerView.getParent();
    if (rvParent != null) {
        rvParent.requestDisallowInterceptTouchEvent(this.selected != null);
    }
    if (!preventLayout) {
        recyclerView.getLayoutManager().requestSimpleAnimationsInNextLayout();
    }
    callback.onSelectedChanged(this.selected, this.actionState);
    recyclerView.invalidate();
}

---

From source file:com.org.lengend.photoview.library.PhotoViewAttacher.java

@SuppressLint("ClickableViewAccessibility")
@Override//from   w ww.  ja v a  2  s. c o  m
public boolean onTouch(View v, MotionEvent ev) {
    boolean handled = false;

    if (mZoomEnabled && hasDrawable((ImageView) v)) {
        ViewParent parent = v.getParent();
        switch (ev.getAction()) {
        case ACTION_DOWN:
            // First, disable the Parent from intercepting the touch
            // event
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(true);
            } else {
                Logger.i(LOG_TAG, "onTouch getParent() returned null");
            }

            // If we're flinging, and the user presses down, cancel
            // fling
            cancelFling();
            break;

        case ACTION_CANCEL:
        case ACTION_UP:
            // If the user has zoomed less than min scale, zoom back
            // to min scale
            if (getScale() < mMinScale) {
                RectF rect = getDisplayRect();
                if (null != rect) {
                    v.post(new AnimatedZoomRunnable(getScale(), mMinScale, rect.centerX(), rect.centerY()));
                    handled = true;
                }
            }
            break;
        }

        // Try the Scale/Drag detector
        if (null != mScaleDragDetector) {
            boolean wasScaling = mScaleDragDetector.isScaling();
            boolean wasDragging = mScaleDragDetector.isDragging();

            handled = mScaleDragDetector.onTouchEvent(ev);

            boolean didntScale = !wasScaling && !mScaleDragDetector.isScaling();
            boolean didntDrag = !wasDragging && !mScaleDragDetector.isDragging();

            mBlockParentIntercept = didntScale && didntDrag;
        }

        // Check to see if the user double tapped
        if (null != mGestureDetector && mGestureDetector.onTouchEvent(ev)) {
            handled = true;
        }

    }

    return handled;
}

---

From source file:com.homechart.app.commont.imagedetail.PhotoViewAttacher.java

@Override
public void onDrag(float dx, float dy) {
    if (mScaleDragDetector.isScaling()) {
        return; // Do not drag if we are already scaling
    }//from  w ww.j  av a2  s.  c o  m

    ImageView imageView = getImageView();
    mSuppMatrix.postTranslate(dx, dy);
    checkAndDisplayMatrix();

    /**
     * Here we decide whether to let the ImageView's parent to start taking
     * over the touch event.
     *
     * First we check whether this function is enabled. We never want the
     * parent to take over if we're scaling. We then check the edge we're
     * on, and the direction of the scroll (i.e. if we're pulling against
     * the edge, aka 'overscrolling', let the parent take over).
     */
    ViewParent parent = imageView.getParent();
    if (mAllowParentInterceptOnEdge && !mScaleDragDetector.isScaling() && !mBlockParentIntercept) {
        if (mScrollEdge == EDGE_BOTH || (mScrollEdge == EDGE_LEFT && dx >= 1f)
                || (mScrollEdge == EDGE_RIGHT && dx <= -1f)) {
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(false);
            }
        }
    } else {
        if (null != parent) {
            parent.requestDisallowInterceptTouchEvent(true);
        }
    }
}

---

From source file:baizhuan.hangzhou.com.gankcopy.view.customview.photoview.PhotoViewAttacher.java

@SuppressLint("ClickableViewAccessibility")
@Override// w  ww .j a v  a  2s  .  c  o m
public boolean onTouch(View v, MotionEvent ev) {
    boolean handled = false;

    if (mZoomEnabled && hasDrawable((ImageView) v)) {
        ViewParent parent = v.getParent();
        switch (ev.getAction()) {
        case ACTION_DOWN:
            // First, disable the Parent from intercepting the touch
            // event
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(true);
            } else {
                LogManager.getLogger().i(LOG_TAG, "onTouch getParent() returned null");
            }

            // If we're flinging, and the user presses down, cancel
            // fling
            cancelFling();
            break;

        case ACTION_CANCEL:
        case ACTION_UP:
            // If the user has zoomed less than min scale, zoom back
            // to min scale
            if (getScale() < mMinScale) {
                RectF rect = getDisplayRect();
                if (null != rect) {
                    v.post(new AnimatedZoomRunnable(getScale(), mMinScale, rect.centerX(), rect.centerY()));
                    handled = true;
                }
            }
            break;
        }

        // Try the Scale/Drag detector
        if (null != mScaleDragDetector) {
            boolean wasScaling = mScaleDragDetector.isScaling();
            boolean wasDragging = mScaleDragDetector.isDragging();

            handled = mScaleDragDetector.onTouchEvent(ev);

            boolean didntScale = !wasScaling && !mScaleDragDetector.isScaling();
            boolean didntDrag = !wasDragging && !mScaleDragDetector.isDragging();

            mBlockParentIntercept = didntScale && didntDrag;
        }

        // Check to see if the user double tapped
        if (null != mGestureDetector && mGestureDetector.onTouchEvent(ev)) {
            handled = true;
        }

    }

    return handled;
}

---

From source file:com.example.imagegallerydemo.photoview.PhotoViewAttacher.java

@Override
public void onDrag(float dx, float dy) {
    if (mScaleDragDetector.isScaling()) {
        return; // Do not drag if we are already scaling
    }//from  w  w w  .ja v  a 2s.  c  om

    if (DEBUG) {
        Log.d(LOG_TAG, String.format("onDrag: dx: %.2f. dy: %.2f", dx, dy));
    }

    ImageView imageView = getImageView();
    mSuppMatrix.postTranslate(dx, dy);
    checkAndDisplayMatrix();

    /**
     * Here we decide whether to let the ImageView's parent to start taking
     * over the touch event.
     *
     * First we check whether this function is enabled. We never want the
     * parent to take over if we're scaling. We then check the edge we're
     * on, and the direction of the scroll (i.e. if we're pulling against
     * the edge, aka 'overscrolling', let the parent take over).
     */
    ViewParent parent = imageView.getParent();
    if (mAllowParentInterceptOnEdge && !mScaleDragDetector.isScaling() && !mBlockParentIntercept) {
        if (mScrollEdge == EDGE_BOTH || (mScrollEdge == EDGE_LEFT && dx >= 1f)
                || (mScrollEdge == EDGE_RIGHT && dx <= -1f)) {
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(false);
            }
        }
    } else {
        if (null != parent) {
            parent.requestDisallowInterceptTouchEvent(true);
        }
    }
}

---

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