Java Code Examples for android.view.ViewParent#requestDisallowInterceptTouchEvent()

The following examples show how to use android.view.ViewParent#requestDisallowInterceptTouchEvent() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: PhotoViewAttacher.java From Android with MIT License

5 votes

@Override
public void onDrag(float dx, float dy) {
    if (mScaleDragDetector.isScaling()) {
        return; // Do not drag if we are already scaling
    }

    if (DEBUG) {
        LogManager.getLogger().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);
        }
    }
}

Example 2

Source File: Chart.java From StockChart-MPAndroidChart with MIT License

5 votes

/**
 * disables intercept touchevents
 */
public void disableScroll() {
    ViewParent parent = getParent();
    if (parent != null) {
        parent.requestDisallowInterceptTouchEvent(true);
    }
}

Example 3

Source File: XImageView.java From XImageView with Apache License 2.0

5 votes

/**
 * 是否劫持输入事件, ViewPager
 */
@Override
public void interceptParentTouchEvent(boolean intercept)
{
    ViewParent parent = getParent();
    if (parent != null) {
        parent.requestDisallowInterceptTouchEvent(intercept);
    }
}

Example 4

Source File: PhotoViewAttacher.java From Nimingban with Apache License 2.0

5 votes

@Override
public void onDrag(float dx, float dy) {
    if (mScaleDragDetector.isScaling()) {
        return; // Do not drag if we are already scaling
    }

    if (DEBUG) {
        LogManager.getLogger().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);
        }
    }
}

Example 5

Source File: PhotoViewAttacher.java From MNImageBrowser with GNU General Public License v3.0

5 votes

@Override
public void onDrag(float dx, float dy) {
    if (mScaleDragDetector.isScaling()) {
        return; // Do not drag if we are already scaling
    }

    if (mOnViewDragListener != null) {
        mOnViewDragListener.onDrag(dx, dy);
    }
    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 = mImageView.getParent();
    if (mAllowParentInterceptOnEdge && !mScaleDragDetector.isScaling() && !mBlockParentIntercept) {
        if (mScrollEdge == EDGE_BOTH
                || (mScrollEdge == EDGE_LEFT && dx >= 1f)
                || (mScrollEdge == EDGE_RIGHT && dx <= -1f)) {
            if (parent != null) {
                parent.requestDisallowInterceptTouchEvent(false);
            }
        }
    } else {
        if (parent != null) {
            parent.requestDisallowInterceptTouchEvent(true);
        }
    }
}

Example 6

Source File: AbsHListView.java From Klyph with MIT License

5 votes

private boolean startScrollIfNeeded( int x ) {
	// Check if we have moved far enough that it looks more like a
	// scroll than a tap
	final int deltaX = x - mMotionX;
	final int distance = Math.abs( deltaX );
	final boolean overscroll = getScrollX() != 0;
	if ( overscroll || distance > mTouchSlop ) {
		createScrollingCache();
		if ( overscroll ) {
			mTouchMode = TOUCH_MODE_OVERSCROLL;
			mMotionCorrection = 0;
		} else {
			mTouchMode = TOUCH_MODE_SCROLL;
			mMotionCorrection = deltaX > 0 ? mTouchSlop : -mTouchSlop;
		}
		final Handler handler = getHandler();
		// Handler should not be null unless the AbsListView is not attached to a
		// window, which would make it very hard to scroll it... but the monkeys
		// say it's possible.
		if ( handler != null ) {
			handler.removeCallbacks( mPendingCheckForLongPress );
		}
		setPressed( false );
		View motionView = getChildAt( mMotionPosition - mFirstPosition );
		if ( motionView != null ) {
			motionView.setPressed( false );
		}
		reportScrollStateChange( OnScrollListener.SCROLL_STATE_TOUCH_SCROLL );
		// Time to start stealing events! Once we've stolen them, don't let anyone
		// steal from us
		final ViewParent parent = getParent();
		if ( parent != null ) {
			parent.requestDisallowInterceptTouchEvent( true );
		}
		scrollIfNeeded( x );
		return true;
	}

	return false;
}

Example 7

Source File: ViewPagerCompat.java From android-auto-scroll-viewpager with Apache License 2.0

4 votes

private void requestParentDisallowInterceptTouchEvent(boolean disallowIntercept) {
    final ViewParent parent = getParent();
    if (parent != null) {
        parent.requestDisallowInterceptTouchEvent(disallowIntercept);
    }
}

Example 8

Source File: SwipeTouchHelper.java From StackCardsView with Apache License 2.0

4 votes

private void requestParentDisallowInterceptTouchEvent(boolean disallowIntercept) {
    final ViewParent parent = mSwipeView.getParent();
    if (parent != null) {
        parent.requestDisallowInterceptTouchEvent(disallowIntercept);
    }
}

Example 9

Source File: PhotoViewAttacher.java From OmniList with GNU Affero General Public License v3.0

4 votes

@SuppressLint("ClickableViewAccessibility")
@Override
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;
}

Example 10

Source File: SwitchButton.java From AssistantBySDK with Apache License 2.0

4 votes

private void catchView() {
	ViewParent parent = getParent();
	if (parent != null) {
		parent.requestDisallowInterceptTouchEvent(true);
	}
}

Example 11

Source File: SwipeItemLayout.java From IndexRecyclerView with Apache License 2.0

4 votes

private void requestParentDisallowInterceptTouchEvent() {
    ViewParent parent = getParent();
    if (parent != null) {
        parent.requestDisallowInterceptTouchEvent(true);
    }
}

Example 12

Source File: OverviewStackViewTouchHandler.java From StackOverView with MIT License

4 votes

/** Touch preprocessing for handling below */
public boolean onInterceptTouchEvent(MotionEvent ev) {
    // Return early if we have no children
    boolean hasChildren = (mSv.getChildCount() > 0);
    if (!hasChildren) {
        return false;
    }

    // Pass through to swipe helper if we are swiping
    mInterceptedBySwipeHelper = mSwipeHelper.onInterceptTouchEvent(ev);
    if (mInterceptedBySwipeHelper) {
        return true;
    }

    boolean wasScrolling = mScroller.isScrolling() ||
            (mScroller.mScrollAnimator != null && mScroller.mScrollAnimator.isRunning());
    int action = ev.getAction();
    switch (action & MotionEvent.ACTION_MASK) {
        case MotionEvent.ACTION_DOWN: {
            // Save the touch down info
            mInitialMotionX = mLastMotionX = (int) ev.getX();
            mInitialMotionY = mLastMotionY = (int) ev.getY();
            mInitialP = mLastP = mSv.mLayoutAlgorithm.screenYToCurveProgress(mLastMotionY);
            mActivePointerId = ev.getPointerId(0);
            mActiveTaskView = findViewAtPoint(mLastMotionX, mLastMotionY);
            // Stop the current scroll if it is still flinging
            mScroller.stopScroller();
            mScroller.stopBoundScrollAnimation();
            // Initialize the velocity tracker
            initOrResetVelocityTracker();
            mVelocityTracker.addMovement(createMotionEventForStackScroll(ev));
            // Check if the scroller is finished yet
            mIsScrolling = mScroller.isScrolling();
            break;
        }
        case MotionEvent.ACTION_MOVE: {
            if (mActivePointerId == INACTIVE_POINTER_ID) break;

            int activePointerIndex = ev.findPointerIndex(mActivePointerId);
            int y = (int) ev.getY(activePointerIndex);
            int x = (int) ev.getX(activePointerIndex);
            if (Math.abs(y - mInitialMotionY) > mScrollTouchSlop) {
                // Save the touch move info
                mIsScrolling = true;
                // Initialize the velocity tracker if necessary
                initVelocityTrackerIfNotExists();
                mVelocityTracker.addMovement(createMotionEventForStackScroll(ev));
                // Disallow parents from intercepting touch events
                final ViewParent parent = mSv.getParent();
                if (parent != null) {
                    parent.requestDisallowInterceptTouchEvent(true);
                }
            }

            mLastMotionX = x;
            mLastMotionY = y;
            mLastP = mSv.mLayoutAlgorithm.screenYToCurveProgress(mLastMotionY);
            break;
        }
        case MotionEvent.ACTION_CANCEL:
        case MotionEvent.ACTION_UP: {
            // Animate the scroll back if we've cancelled
            mScroller.animateBoundScroll();
            // Reset the drag state and the velocity tracker
            mIsScrolling = false;
            mActivePointerId = INACTIVE_POINTER_ID;
            mActiveTaskView = null;
            mTotalPMotion = 0;
            recycleVelocityTracker();
            break;
        }
    }

    return wasScrolling || mIsScrolling;
}

Example 13

Source File: WXGesture.java From weex-uikit with MIT License

4 votes

/**
 * Gesture priority：horizontalPan & verticalPan > pan > swipe
 */
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
  boolean result = false;
  if (e1 == null || e2 == null) {
    return false;
  }
  float dx = Math.abs(e2.getX() - e1.getX());
  float dy = Math.abs(e2.getY() - e1.getY());
  WXGestureType possiblePan;
  if (dx > dy) {
    possiblePan = HighLevelGesture.HORIZONTALPAN;
  } else {
    possiblePan = HighLevelGesture.VERTICALPAN;
  }
  if (mPendingPan == HighLevelGesture.HORIZONTALPAN || mPendingPan == HighLevelGesture.VERTICALPAN) {
    //already during directional-pan
    handlePanMotionEvent(e2);
    result = true;
  } else if (component.containsGesture(possiblePan)) {
    ViewParent p;
    if ((p = component.getRealView().getParent()) != null) {
      p.requestDisallowInterceptTouchEvent(true);
    }
    if (mPendingPan != null) {
      handleMotionEvent(mPendingPan, e2);//finish pan if exist
    }
    mPendingPan = possiblePan;
    component.fireEvent(possiblePan.toString(), createFireEventParam(e2, CUR_EVENT, START));

    result = true;
  } else if (containsSimplePan()) {
    if (panDownTime != e1.getEventTime()) {
      panDownTime = e1.getEventTime();
      mPendingPan = HighLevelGesture.PAN_END;
      component.fireEvent(HighLevelGesture.PAN_START.toString(),
          createFireEventParam(e1, CUR_EVENT, null));
    } else {
      component.fireEvent(HighLevelGesture.PAN_MOVE.toString(),
          createFireEventParam(e2, CUR_EVENT, null));
    }
    result = true;
  } else if (component.containsGesture(HighLevelGesture.SWIPE)) {
    if (swipeDownTime != e1.getEventTime()) {
      swipeDownTime = e1.getEventTime();
      List<Map<String, Object>> list = createMultipleFireEventParam(e2, null);
      Map<String, Object> param = list.get(list.size() - 1);
      if (Math.abs(distanceX) > Math.abs(distanceY)) {
        param.put(GestureInfo.DIRECTION, distanceX > 0 ? LEFT : RIGHT);
      } else {
        param.put(GestureInfo.DIRECTION, distanceY > 0 ? UP : DOWN);
      }
      component.getInstance().fireEvent(component.getDomObject().getRef(),
          HighLevelGesture.SWIPE.toString(), param);
      result = true;
    }
  }
  return result;
}

Example 14

Source File: PhotoViewAttacher.java From imsdk-android with MIT License

4 votes

@SuppressLint("ClickableViewAccessibility")
@Override
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);
                }

                // 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;
}

Example 15

Source File: DirectionalViewpager.java From fangzhuishushenqi with Apache License 2.0

4 votes

private void requestParentDisallowInterceptTouchEvent(boolean disallowIntercept) {
    final ViewParent parent = getParent();
    if (parent != null) {
        parent.requestDisallowInterceptTouchEvent(disallowIntercept);
    }
}

Example 16

Source File: SubsamplingScaleImageView.java From EasyPhotos with Apache License 2.0

4 votes

private void requestDisallowInterceptTouchEvent(boolean disallowIntercept) {
    ViewParent parent = getParent();
    if (parent != null) {
        parent.requestDisallowInterceptTouchEvent(disallowIntercept);
    }
}

Example 17

Source File: ScrollFlowLayout.java From FlowHelper with Apache License 2.0

4 votes

@Override
public boolean onTouchEvent(MotionEvent event) {
    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    mVelocityTracker.addMovement(event);
    final ViewParent parent = getParent();
    
    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            
            break;
        case MotionEvent.ACTION_MOVE:
            //scroller 向右为负，向左为正
            int offset;
            if (isVerticalMove()){
                offset = (int) (mMovePos - event.getY());
            }else {
                offset = (int) (mMovePos - event.getX());
            }
            if (Math.abs(offset) > mTouchSlop){
              
                if (parent != null) {
                    parent.requestDisallowInterceptTouchEvent(true);
                }
            }
            int scrollPos ;
            if (isVerticalMove()){
                scrollPos = getScrollY();
            }else{
                scrollPos = getScrollX();
            }
            /**
             * 判断边界
             */
            if (scrollPos + offset <= 0) {
                scrollTo(0, 0);
                return true;
            }
            if (isVerticalMove()){
                if (scrollPos +offset >= mBottomRound - mHeight){
                    scrollTo(0,mBottomRound - mHeight);
                    return true;
                }
                scrollBy(0, offset);
            }else{
                if (scrollPos +offset >= mRightBound - mWidth) {
                    scrollTo(mRightBound - mWidth, 0);
                    return true;
                }
                scrollBy(offset, 0);
            }



            isMove = true;
            if (isVerticalMove()){
                mMovePos = event.getY();
            }else {
                mMovePos = event.getX();
            }
            break;
        case MotionEvent.ACTION_UP:
        case MotionEvent.ACTION_CANCEL:
            mVelocityTracker.computeCurrentVelocity(1000,mMaximumVelocity);
            int velocityPos ;
            if (isVerticalMove()){
                velocityPos = (int) mVelocityTracker.getYVelocity();
            }else{
                velocityPos = (int) mVelocityTracker.getXVelocity();
            }
            if (Math.abs(velocityPos) >= mMinimumVelocity) {
                if (isVerticalMove()){
                    mCurScrollPos = getScrollY();
                    mScroller.fling(0,mCurScrollPos,0,velocityPos,
                            0,0,0,getHeight());
                }else {
                    mCurScrollPos = getScrollX();
                    mScroller.fling(mCurScrollPos, 0, velocityPos,
                            0, 0, getWidth(), 0, 0);
                }

                if (mVelocityTracker != null) {
                    mVelocityTracker.clear();
                    mVelocityTracker.recycle();
                    mVelocityTracker = null;
                }
            }
            break;
        default:
            break;

    }
    return super.onTouchEvent(event);
}

Example 18

Source File: Slider.java From MaterialQQLite with Apache License 2.0

4 votes

@Override
public boolean onTouchEvent(@NonNull MotionEvent event) {
    super.onTouchEvent(event);
    ViewParent parent = getParent();
    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN: {
            if (parent != null) {
                parent.requestDisallowInterceptTouchEvent(true);
            }
            if (event.getX() >= 0 && event.getX() <= getWidth() &&
                    event.getY() >= 0 && event.getY() <= getHeight()) {
                mCoordinateX = getCoordinateX(event);
            }
        }
        break;
        case MotionEvent.ACTION_MOVE: {
            if (parent != null) {
                parent.requestDisallowInterceptTouchEvent(true);
            }
            mState = StateDragging;
            if (event.getX() >= 0 && event.getX() <= getWidth() &&
                    event.getY() >= 0 && event.getY() <= getHeight()) {
                mCoordinateX = getCoordinateX(event);
                Log.v("EventX", event.getX() + ":" + mCoordinateX);
                invalidate();
            }
        }
        break;
        case MotionEvent.ACTION_UP: {
            if (parent != null) {
                parent.requestDisallowInterceptTouchEvent(false);
            }
            calculateProgress();
            mState = StateNormal;
            invalidate();
        }
        break;
        case MotionEvent.ACTION_CANCEL: {
            if (parent != null) {
                parent.requestDisallowInterceptTouchEvent(false);
            }
            calculateProgress();
            mState = StateNormal;
            invalidate();
        }
        break;
    }
    return true;
}

Example 19

Source File: YViewPager.java From YViewPagerDemo with Apache License 2.0

4 votes

private void requestParentDisallowInterceptTouchEvent(boolean disallowIntercept) {
    final ViewParent parent = getParent();
    if (parent != null) {
        parent.requestDisallowInterceptTouchEvent(disallowIntercept);
    }
}

Example 20

Source File: VerticalSeekbar.java From BookReader with Apache License 2.0

4 votes

private void attemptClaimDrag() {
    ViewParent p = getParent();
    if (p != null) {
        p.requestDisallowInterceptTouchEvent(true);
    }
}