android.view.MotionEvent#ACTION_UP源码实例Demo

下面列出了android.view.MotionEvent#ACTION_UP 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： IndexStickyView 文件： IndexStickyView.java

@Override
public void onSideBarTouch(View v, MotionEvent event, int touchPosition) {

    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
        case MotionEvent.ACTION_MOVE:
            showCenterOverlayView(mSideBar.getIndexValue(touchPosition));
            if(touchPosition != mSideBar.getSelectPosition()) {
                if(touchPosition == 0) {
                    mLinearLayoutManager.scrollToPosition(0);
                } else {
                    int recyclerViewPosition = getScrollPositionBySideBarSelectPosition(touchPosition);
                    mLinearLayoutManager.scrollToPositionWithOffset(recyclerViewPosition, 0);
                }
            }
            break;
        case MotionEvent.ACTION_CANCEL:
        case MotionEvent.ACTION_UP:
            hideCenterOverlayView();
            break;
    }
}

源代码2 项目： mollyim-android 文件： StickerRolloverTouchListener.java

@Override
public void onTouchEvent(@NonNull RecyclerView recyclerView, @NonNull MotionEvent motionEvent) {
  switch (motionEvent.getAction()) {
    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
      hoverMode = false;
      popup.dismiss();
      eventListener.onStickerPopupEnded();
      break;
    default:
      for (int i = 0, len = recyclerView.getChildCount(); i < len; i++) {
        View child = recyclerView.getChildAt(i);

        if (ViewUtil.isPointInsideView(recyclerView, motionEvent.getRawX(), motionEvent.getRawY()) &&
            ViewUtil.isPointInsideView(child, motionEvent.getRawX(), motionEvent.getRawY()))
        {
          showStickerForView(recyclerView, child);
        }
      }
  }
}

源代码3 项目： kAndroid 文件： BaseView.java

@Override
public boolean onSingleTapUp(MotionEvent e) {
    switch (e.getAction()){
        case MotionEvent.ACTION_DOWN:
            Log.i("--->", "ACTION_DOWN");
            break;
        case MotionEvent.ACTION_UP: //双指点击时不会触发
            Log.i("--->", "ACTION_UP");
            if (isClosePress) {
                //代处理其它事件
            } else {
                isClosePress = true;
            }

            break;
        case MotionEvent.ACTION_MOVE:
            Log.i("--->", "ACTION_MOVE");
            break;
    }
    return false;
}

源代码4 项目： imsdk-android 文件： ImageClipActivity.java

@Override
public boolean onTouch(View v, MotionEvent event) {
    ImageView view = (ImageView) v;
    switch (event.getAction() & MotionEvent.ACTION_MASK) {
        case MotionEvent.ACTION_DOWN:
            savedMatrix.set(matrix);
            // 设置开始点位置
            start.set(event.getX(), event.getY());
            mode = DRAG;
            break;
        case MotionEvent.ACTION_POINTER_DOWN:
            oldDist = spacing(event);
            if (oldDist > 10f) {
                savedMatrix.set(matrix);
                midPoint(mid, event);
                mode = ZOOM;
            }
            break;
        case MotionEvent.ACTION_UP:
        case MotionEvent.ACTION_POINTER_UP:
            mode = NONE;
            break;
        case MotionEvent.ACTION_MOVE:
            if (mode == DRAG) {
                matrix.set(savedMatrix);
                matrix.postTranslate(event.getX() - start.x, event.getY()
                        - start.y);
            } else if (mode == ZOOM) {
                float newDist = spacing(event);
                if (newDist > 10f) {
                    matrix.set(savedMatrix);
                    float scale = newDist / oldDist;
                    matrix.postScale(scale, scale, mid.x, mid.y);
                }
            }
            break;
    }
    view.setImageMatrix(matrix);
    return true;
}

源代码5 项目： TelePlus-Android 文件： StickersAlert.java

@Override
public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
    try {
        boolean result = super.onTouchEvent(widget, buffer, event);
        if (event.getAction() == MotionEvent.ACTION_UP || event.getAction() == MotionEvent.ACTION_CANCEL) {
            Selection.removeSelection(buffer);
        }
        return result;
    } catch (Exception e) {
        FileLog.e(e);
    }
    return false;
}

源代码6 项目： MultiView 文件： EclairGestureDetector.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    final int action = ev.getAction();
    switch (action & MotionEvent.ACTION_MASK) {
        case MotionEvent.ACTION_DOWN:
            mActivePointerId = ev.getPointerId(0);
            break;
        case MotionEvent.ACTION_CANCEL:
        case MotionEvent.ACTION_UP:
            mActivePointerId = INVALID_POINTER_ID;
            break;
        case MotionEvent.ACTION_POINTER_UP:
            // Ignore deprecation, ACTION_POINTER_ID_MASK and
            // ACTION_POINTER_ID_SHIFT has same value and are deprecated
            // You can have either deprecation or lint target api warning
            final int pointerIndex = Compat.getPointerIndex(ev.getAction());
            final int pointerId = ev.getPointerId(pointerIndex);
            if (pointerId == mActivePointerId) {
                // This was our active pointer going up. Choose a new
                // active pointer and adjust accordingly.
                final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
                mActivePointerId = ev.getPointerId(newPointerIndex);
                mLastTouchX = ev.getX(newPointerIndex);
                mLastTouchY = ev.getY(newPointerIndex);
            }
            break;
    }

    mActivePointerIndex = ev
            .findPointerIndex(mActivePointerId != INVALID_POINTER_ID ? mActivePointerId
                    : 0);
    return super.onTouchEvent(ev);
}

源代码7 项目： Telegram-FOSS 文件： ChangeUsernameActivity.java

@Override
public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
    try {
        boolean result = super.onTouchEvent(widget, buffer, event);
        if (event.getAction() == MotionEvent.ACTION_UP || event.getAction() == MotionEvent.ACTION_CANCEL) {
            Selection.removeSelection(buffer);
        }
        return result;
    } catch (Exception e) {
        FileLog.e(e);
    }
    return false;
}

源代码8 项目： settingscompat 文件： FloatView.java

@Override
public boolean onTouch(View v, MotionEvent event) {
    switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN:
        touchX = event.getX() + getLeft();
        touchY = event.getY() + getTop();
        startX = event.getRawX();
        startY = event.getRawY();
        isDragging = false;
        break;
    case MotionEvent.ACTION_MOVE:
        int dx = (int) (event.getRawX() - startX);
        int dy = (int) (event.getRawY() - startY);
        if ((dx * dx + dy * dy) > mTouchSlop) {
            isDragging = true;
            mLp.x = (int) (event.getRawX() - touchX);
            mLp.y = (int) (event.getRawY() - touchY);
            mWm.updateViewLayout(FloatView.this, mLp);
            return true;
        }
        break;
    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL:
        touchX = touchY = 0.0F;
        if (isDragging) {
            reposition();
            isDragging = false;
            return true;
        }
    }
    return false;
}

源代码9 项目： iGap-Android 文件： NumberPicker.java

@Override
public boolean dispatchTouchEvent(MotionEvent event) {
    final int action = event.getActionMasked();
    switch (action) {
        case MotionEvent.ACTION_CANCEL:
        case MotionEvent.ACTION_UP:
            removeAllCallbacks();
            break;
    }
    return super.dispatchTouchEvent(event);
}

源代码10 项目： android_9.0.0_r45 文件： TimePickerClockDelegate.java

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    final int actionMasked = motionEvent.getActionMasked();
    if (actionMasked == MotionEvent.ACTION_DOWN) {
        if (view instanceof ViewGroup) {
            mInitialTouchTarget = findNearestChild((ViewGroup) view,
                    (int) motionEvent.getX(), (int) motionEvent.getY());
        } else {
            mInitialTouchTarget = null;
        }
    }

    final View child = mInitialTouchTarget;
    if (child == null) {
        return false;
    }

    final float offsetX = view.getScrollX() - child.getLeft();
    final float offsetY = view.getScrollY() - child.getTop();
    motionEvent.offsetLocation(offsetX, offsetY);
    final boolean handled = child.dispatchTouchEvent(motionEvent);
    motionEvent.offsetLocation(-offsetX, -offsetY);

    if (actionMasked == MotionEvent.ACTION_UP
            || actionMasked == MotionEvent.ACTION_CANCEL) {
        mInitialTouchTarget = null;
    }

    return handled;
}

源代码11 项目： sdl_java_suite 文件： VideoStreamManager.java

/**
 * Handles the SDL Touch Event to keep track of pointer status and returns the appropriate
 * Android MotionEvent according to this events status
 * @param touchType The SDL TouchType that was received from the module
 * @param touchEvent The SDL TouchEvent that was received from the module
 * @return the correct native Android MotionEvent action to dispatch
 */
synchronized int getMotionEventAction(TouchType touchType, TouchEvent touchEvent){
	eventTime = 0;
	int motionEventAction = -1;
	switch (touchType){
		case BEGIN:
			if(pointers.size() == 0){
				//The motion event has just begun
				motionEventAction = MotionEvent.ACTION_DOWN;
				downTime = SystemClock.uptimeMillis();
				downTimeOnHMI = touchEvent.getTimestamps().get(touchEvent.getTimestamps().size() - 1);
				eventTime = downTime;
			} else{
				motionEventAction = MotionEvent.ACTION_POINTER_DOWN | pointers.size() << MotionEvent.ACTION_POINTER_INDEX_SHIFT;
				eventTime = downTime + touchEvent.getTimestamps().get(touchEvent.getTimestamps().size() - 1) - downTimeOnHMI;
			}
			pointers.add(new Pointer(touchEvent.getId()));
			break;
		case MOVE:
			motionEventAction = MotionEvent.ACTION_MOVE;
			eventTime = downTime + touchEvent.getTimestamps().get(touchEvent.getTimestamps().size() - 1) - downTimeOnHMI;
			break;
		case END:
			if(pointers.size() <= 1){
				//The motion event has just ended
				motionEventAction = MotionEvent.ACTION_UP;
			} else {
				int pointerIndex = pointers.indexOf(getPointerById(touchEvent.getId()));
				if (pointerIndex != -1) {
					motionEventAction = MotionEvent.ACTION_POINTER_UP | pointerIndex << MotionEvent.ACTION_POINTER_INDEX_SHIFT;
				} else {
					motionEventAction = MotionEvent.ACTION_UP;
				}
			}
			eventTime = downTime + touchEvent.getTimestamps().get(touchEvent.getTimestamps().size() - 1) - downTimeOnHMI;
			break;
		case CANCEL:
			//Assuming this cancels the entire event
			motionEventAction = MotionEvent.ACTION_CANCEL;
			eventTime = downTime + touchEvent.getTimestamps().get(touchEvent.getTimestamps().size() - 1) - downTimeOnHMI;
			break;
		default:
			break;
	}
	return motionEventAction;
}

源代码12 项目： easyweather 文件： SlideCutListView.java

/**
 * 处理我们拖动ListView item的逻辑
 */
@Override
public boolean onTouchEvent(MotionEvent ev) {
    if (isSlide && slidePosition != AdapterView.INVALID_POSITION) {
        requestDisallowInterceptTouchEvent(true);
        addVelocityTracker(ev);
        final int action = ev.getAction();
        int x = (int) ev.getX();
        switch (action) {
            case MotionEvent.ACTION_DOWN:
                break;
            case MotionEvent.ACTION_MOVE:

                MotionEvent cancelEvent = MotionEvent.obtain(ev);
                cancelEvent.setAction(MotionEvent.ACTION_CANCEL |
                        (ev.getActionIndex()<< MotionEvent.ACTION_POINTER_INDEX_SHIFT));
                onTouchEvent(cancelEvent);

                int deltaX = downX - x;
                downX = x;

                // 手指拖动itemView滚动, deltaX大于0向左滚动，小于0向右滚
                itemView.scrollBy(deltaX, 0);

                return true;  //拖动的时候ListView不滚动
            case MotionEvent.ACTION_UP:
                int velocityX = getScrollVelocity();
                if (velocityX > SNAP_VELOCITY) {
                    scrollRight();
                } else if (velocityX < -SNAP_VELOCITY) {
                    scrollLeft();
                } else {
                    scrollByDistanceX();
                }

                recycleVelocityTracker();
                // 手指离开的时候就不响应左右滚动
                isSlide = false;
                break;
        }
    }

    //否则直接交给ListView来处理onTouchEvent事件
    return super.onTouchEvent(ev);
}

源代码13 项目： Dashboard 文件： CupcakeGestureDetector.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    switch (ev.getAction()) {
        case MotionEvent.ACTION_DOWN: {
            mVelocityTracker = VelocityTracker.obtain();
            if (null != mVelocityTracker) {
                mVelocityTracker.addMovement(ev);
            } else {
                Log.i(LOG_TAG, "Velocity tracker is null");
            }

            mLastTouchX = getActiveX(ev);
            mLastTouchY = getActiveY(ev);
            mIsDragging = false;
            break;
        }

        case MotionEvent.ACTION_MOVE: {
            final float x = getActiveX(ev);
            final float y = getActiveY(ev);
            final float dx = x - mLastTouchX, dy = y - mLastTouchY;

            if (!mIsDragging) {
                // Use Pythagoras to see if drag length is larger than
                // touch slop
                mIsDragging = Math.sqrt((dx * dx) + (dy * dy)) >= mTouchSlop;
            }

            if (mIsDragging) {
                mListener.onDrag(dx, dy);
                mLastTouchX = x;
                mLastTouchY = y;

                if (null != mVelocityTracker) {
                    mVelocityTracker.addMovement(ev);
                }
            }
            break;
        }

        case MotionEvent.ACTION_CANCEL: {
            // Recycle Velocity Tracker
            if (null != mVelocityTracker) {
                mVelocityTracker.recycle();
                mVelocityTracker = null;
            }
            break;
        }

        case MotionEvent.ACTION_UP: {
            if (mIsDragging) {
                if (null != mVelocityTracker) {
                    mLastTouchX = getActiveX(ev);
                    mLastTouchY = getActiveY(ev);

                    // Compute velocity within the last 1000ms
                    mVelocityTracker.addMovement(ev);
                    mVelocityTracker.computeCurrentVelocity(1000);

                    final float vX = mVelocityTracker.getXVelocity(), vY = mVelocityTracker
                            .getYVelocity();

                    // If the velocity is greater than minVelocity, call
                    // listener
                    if (Math.max(Math.abs(vX), Math.abs(vY)) >= mMinimumVelocity) {
                        mListener.onFling(mLastTouchX, mLastTouchY, -vX,
                                -vY);
                    }
                }
            }

            // Recycle Velocity Tracker
            if (null != mVelocityTracker) {
                mVelocityTracker.recycle();
                mVelocityTracker = null;
            }
            break;
        }
    }

    return true;
}

源代码14 项目： Favorite-Android-Client 文件： PullToRefreshBase.java

@Override
public final boolean onTouchEvent(MotionEvent event) {

	if (!isPullToRefreshEnabled()) {
		return false;
	}

	// If we're refreshing, and the flag is set. Eat the event
	if (!mScrollingWhileRefreshingEnabled && isRefreshing()) {
		return true;
	}

	if (event.getAction() == MotionEvent.ACTION_DOWN && event.getEdgeFlags() != 0) {
		return false;
	}

	switch (event.getAction()) {
		case MotionEvent.ACTION_MOVE: {
			if (mIsBeingDragged) {
				mLastMotionY = event.getY();
				mLastMotionX = event.getX();
				pullEvent();
				return true;
			}
			break;
		}

		case MotionEvent.ACTION_DOWN: {
			if (isReadyForPull()) {
				mLastMotionY = mInitialMotionY = event.getY();
				mLastMotionX = mInitialMotionX = event.getX();
				return true;
			}
			break;
		}

		case MotionEvent.ACTION_CANCEL:
		case MotionEvent.ACTION_UP: {
			if (mIsBeingDragged) {
				mIsBeingDragged = false;

				if (mState == State.RELEASE_TO_REFRESH
						&& (null != mOnRefreshListener || null != mOnRefreshListener2)) {
					setState(State.REFRESHING, true);
					return true;
				}

				// If we're already refreshing, just scroll back to the top
				if (isRefreshing()) {
					smoothScrollTo(0);
					return true;
				}

				// If we haven't returned by here, then we're not in a state
				// to pull, so just reset
				setState(State.RESET);

				return true;
			}
			break;
		}
	}

	return false;
}

源代码15 项目： react-native-smart-barcode 文件： CaptureView.java

@Override
        public boolean onTouch(View v, MotionEvent event) {

            /** 通过与运算保留最后八位 MotionEvent.ACTION_MASK = 255 */
            switch (event.getAction() & MotionEvent.ACTION_MASK) {
                // 手指压下屏幕
                case MotionEvent.ACTION_DOWN:
                    mode = MODE_ZOOM;
                    startDis = event.getY();
//                    Log.i("Test", "ACTION_DOWN");


//                    int leftMargin = (width / 2) + cX + MAX_FRAME_WIDTH/2-(int)(25*density);
                    int leftMargin = cX / 2 + MAX_FRAME_WIDTH / 2 - (int) (25 * density);
                    int topMargin = cY / 2 - (int) (25 * density);
/**
 * 显示seekbar
 */
//                    popupWindow.showAtLocation(v, Gravity.CENTER, leftMargin,topMargin);

                    break;
             /*   case MotionEvent.ACTION_POINTER_DOWN:
                    //如果mZoomSeekBar为null 表示该设备不支持缩放 直接跳过设置mode Move指令也无法执行
                    if (seekbar == null) return true;
                    //移除token对象为mZoomSeekBar的延时任务
                    mHandler.removeCallbacksAndMessages(seekbar);
                    seekbar.setVisibility(View.VISIBLE);

                    mode = MODE_ZOOM;
                    *//** 计算两个手指间的距离 *//*
                    startDis = distance(event);
                    break;*/
                case MotionEvent.ACTION_MOVE:

                    /**
                     * 控制设置zoom没16毫秒触发,不到时间不触发
                     */

                    if (mode == MODE_ZOOM) {
                        /* //只有同时触屏两个点的时候才执行
                        if(event.getPointerCount()<2) return true;*/
                        float endDis = startDis - event.getY();// 结束距离


                        int scale = (int) (endDis / (ScreenHeight / getMaxZoom()));

                        if (scale == 0 && endDis < 0) {
                            scale = -1;
                        } else if (scale == 0 && endDis > 0) {
                            scale = 1;
                        }
//                        Log.i("Test", "scale:" + scale);

                        /**
                         * 处理时间
                         */
                        long endTime = System.currentTimeMillis();

                        long time = endTime - beginTime;

                        beginTime = System.currentTimeMillis();

                        if (scale >= 1 || scale <= -1) {
                            int zoom = getZoom() + scale;
                            //zoom不能超出范围
                            if (zoom > getMaxZoom()) zoom = getMaxZoom();
                            if (zoom < 0) zoom = 0;
//                            Log.i("Test", "zoom:" + zoom + ",Time:" + time);
                            setZoom(zoom);
//                            progressBar.setProgress(zoom);
                            //将最后一次的距离设为当前距离
//                            startDis = endDis;
                        }
                    }
                    break;
                // 手指离开屏幕
                case MotionEvent.ACTION_UP:

                    /*if(mode!=MODE_ZOOM){
                        //设置聚焦
                        Point point=new Point((int)event.getX(), (int)event.getY());
                        mCameraView.onFocus(point,autoFocusCallback);
                        mFocusImageView.startFocus(point);
                    }else {*/
                    //ZOOM模式下 在结束两秒后隐藏seekbar 设置token为mZoomSeekBar用以在连续点击时移除前一个定时任务

					/*mHandler.postAtTime(new Runnable() {

						@Override
						public void run() {
							// TODO Auto-generated method stub
                            if(popupWindow.isShowing()){
                                popupWindow.dismiss();
                            }
						}
					}, progressBar,SystemClock.uptimeMillis()+5000);
//                    }*/
                    break;
            }
            return true;
        }

源代码16 项目： wearmouse 文件： TouchpadGestureDetector.java

void onTouchEvent(MotionEvent e) {
    final int action = e.getActionMasked();
    final boolean pointerUp = action == MotionEvent.ACTION_POINTER_UP;
    final int skipIndex = pointerUp ? e.getActionIndex() : -1;
    float sumX = 0, sumY = 0;
    final int count = e.getPointerCount();
    for (int i = 0; i < count; i++) {
        if (skipIndex == i) continue;
        sumX += e.getX(i);
        sumY += e.getY(i);
    }
    final int div = pointerUp ? count - 1 : count;
    final float focusX = sumX / div;
    final float focusY = sumY / div;

    if (count > 1 && !pointerUp) {
        inRightClick = true;
    }

    switch (action) {
        case MotionEvent.ACTION_DOWN:
        case MotionEvent.ACTION_POINTER_DOWN:
            downFocusX = focusX;
            downFocusY = focusY;
            alwaysInTapRegion = true;
            break;
        case MotionEvent.ACTION_MOVE:
            {
                if (alwaysInTapRegion) {
                    final int deltaX = (int) (focusX - downFocusX);
                    final int deltaY = (int) (focusY - downFocusY);
                    int distance = (deltaX * deltaX) + (deltaY * deltaY);
                    if (distance > slopSquare) {
                        alwaysInTapRegion = false;
                    }
                }

                if (inRightClick && !alwaysInTapRegion && count > 1) {
                    gestureListener.onScroll((lastY - focusY) / 10.0f);
                } else {
                    gestureListener.onMove(focusX - lastX, focusY - lastY);
                }
            }
            break;
        case MotionEvent.ACTION_POINTER_UP:
            if (alwaysInTapRegion) {
                press();
            }
            break;
        case MotionEvent.ACTION_UP:
            if (inRightClick) {
                release();
            } else if (alwaysInTapRegion && !inDoubleTap) {
                press();
            }
            break;
        default:
            break;
    }
    lastX = focusX;
    lastY = focusY;

    gestureDetector.onTouchEvent(e);
}

源代码17 项目： iMoney 文件： PieRadarChartTouchListener.java

@SuppressLint("ClickableViewAccessibility")
@Override
public boolean onTouch(View v, MotionEvent event) {

    if (mGestureDetector.onTouchEvent(event))
        return true;

    // if rotation by touch is enabled
    if (mChart.isRotationEnabled()) {

        float x = event.getX();
        float y = event.getY();

        switch (event.getAction()) {

            case MotionEvent.ACTION_DOWN:

                stopDeceleration();

                resetVelocity();

                if (mChart.isDragDecelerationEnabled())
                    sampleVelocity(x, y);

                setGestureStartAngle(x, y);
                mTouchStartPoint.x = x;
                mTouchStartPoint.y = y;

                break;
            case MotionEvent.ACTION_MOVE:

                if (mChart.isDragDecelerationEnabled())
                    sampleVelocity(x, y);

                if (mTouchMode == NONE
                        && distance(x, mTouchStartPoint.x, y, mTouchStartPoint.y)
                        > Utils.convertDpToPixel(8f)) {
                    mTouchMode = ROTATE;
                    mChart.disableScroll();
                } else if (mTouchMode == ROTATE) {
                    updateGestureRotation(x, y);
                    mChart.invalidate();
                }

                break;
            case MotionEvent.ACTION_UP:

                if (mChart.isDragDecelerationEnabled()) {

                    stopDeceleration();

                    sampleVelocity(x, y);

                    mDecelerationAngularVelocity = calculateVelocity();

                    if (mDecelerationAngularVelocity != 0.f) {
                        mDecelerationLastTime = AnimationUtils.currentAnimationTimeMillis();

                        Utils.postInvalidateOnAnimation(mChart); // This causes computeScroll to fire, recommended for this by Google
                    }
                }

                mChart.enableScroll();
                mTouchMode = NONE;

                break;
        }
    }

    return true;
}

源代码18 项目： mollyim-android 文件： ConversationReactionOverlay.java

public boolean applyTouchEvent(@NonNull MotionEvent motionEvent) {
  if (!isShowing()) {
    if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
      lastSeenDownPoint.set(motionEvent.getX(), motionEvent.getY());
    }
    return false;
  }

  if ((motionEvent.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) != 0) {
    return true;
  }

  if (overlayState == OverlayState.UNINITAILIZED) {
    downIsOurs = false;

    deadzoneTouchPoint.set(motionEvent.getX(), motionEvent.getY());

    overlayState = OverlayState.DEADZONE;
  }

  if (overlayState == OverlayState.DEADZONE) {
    float deltaX = Math.abs(deadzoneTouchPoint.x - motionEvent.getX());
    float deltaY = Math.abs(deadzoneTouchPoint.y - motionEvent.getY());

    if (deltaX > touchDownDeadZoneSize || deltaY > touchDownDeadZoneSize) {
      overlayState = OverlayState.SCRUB;
    } else {
      if (motionEvent.getAction() == MotionEvent.ACTION_UP) {
        overlayState = OverlayState.TAP;

        if (downIsOurs) {
          handleUpEvent();
          return true;
        }
      }

      return MotionEvent.ACTION_MOVE == motionEvent.getAction();
    }
  }

  if (isToolbarTouch) {
    if (motionEvent.getAction() == MotionEvent.ACTION_CANCEL || motionEvent.getAction() == MotionEvent.ACTION_UP) {
      isToolbarTouch = false;
    }
    return false;
  }

  switch (motionEvent.getAction()) {
    case MotionEvent.ACTION_DOWN:
      selected = getSelectedIndexViaDownEvent(motionEvent);

      if (selected == -1) {
        if (motionEvent.getRawY() < toolbar.getHeight() + statusBarHeight) {
          isToolbarTouch = true;
          return false;
        }
      }

      deadzoneTouchPoint.set(motionEvent.getX(), motionEvent.getY());
      overlayState = OverlayState.DEADZONE;
      downIsOurs = true;
      return true;
    case MotionEvent.ACTION_MOVE:
      selected = getSelectedIndexViaMoveEvent(motionEvent);
      return true;
    case MotionEvent.ACTION_UP:
      handleUpEvent();
      return downIsOurs;
    case MotionEvent.ACTION_CANCEL:
      hide();
      return downIsOurs;
    default:
      return false;
  }
}

源代码19 项目： Scrollable 文件： ScrollableLayout.java

@Override
public boolean dispatchTouchEvent(@SuppressWarnings("NullableProblems") MotionEvent event) {

    if (mSelfUpdateScroll) {
        mIsTouchOngoing = false;
        mIsDraggingDraggable = false;
        mIsScrolling = false;
        mIsFlinging = false;
        mOverScrollStarted = false;
        removeCallbacks(mIdleRunnable);
        removeCallbacks(mScrollRunnable);
        return super.dispatchTouchEvent(event);
    }

    final int action = event.getActionMasked();
    if (action == MotionEvent.ACTION_DOWN) {

        mIsTouchOngoing = true;
        mScroller.abortAnimation();

        if (mDraggableView != null && mDraggableView.getGlobalVisibleRect(mDraggableRect)) {
            final int x = (int) (event.getRawX() + .5F);
            final int y = (int) (event.getRawY() + .5F);
            mIsDraggingDraggable = mDraggableRect.contains(x, y);
        } else {
            mIsDraggingDraggable = false;
        }
    } else if (action == MotionEvent.ACTION_UP
            || action == MotionEvent.ACTION_CANCEL){

        mIsTouchOngoing = false;

        if (mCloseUpAlgorithm != null) {
            removeCallbacks(mIdleRunnable);
            postDelayed(mIdleRunnable, mConsiderIdleMillis);
        }

        // great, now we are able to cancel ghost touch when up event Y == mMaxScrollY
        if (mEventRedirected) {
            if (action == MotionEvent.ACTION_UP) {
                final float diff = Math.abs(event.getRawY() - mEventRedirectStartedY);
                if (Float.compare(diff, mScaledTouchSlop) < 0) {
                    event.setAction(MotionEvent.ACTION_CANCEL);
                }
            }
            mEventRedirected = false;
        }

        cancelOverScroll();
    }

    final boolean isPrevScrolling = mIsScrolling;
    final boolean isPrevFlinging  = mIsFlinging;

    mIsFlinging     = mFlingDetector .onTouchEvent(event);
    mIsScrolling    = mScrollDetector.onTouchEvent(event);

    removeCallbacks(mScrollRunnable);
    post(mScrollRunnable);

    final boolean isIntercepted     = mIsScrolling || mIsFlinging;
    final boolean isPrevIntercepted = isPrevScrolling || isPrevFlinging;

    final boolean shouldRedirectDownTouch = action == MotionEvent.ACTION_MOVE
            && (!isIntercepted && isPrevIntercepted)
            && getScrollY() == mMaxScrollY;

    if (isIntercepted || isPrevIntercepted) {

        mMotionEventHook.hook(event, MotionEvent.ACTION_CANCEL);

        if (!isPrevIntercepted) {
            return true;
        }
    }

    if (shouldRedirectDownTouch) {
        mMotionEventHook.hook(event, MotionEvent.ACTION_DOWN);
        mEventRedirectStartedY = event.getRawY();
        mEventRedirected = true;
    }

    super.dispatchTouchEvent(event);
    return true;
}

源代码20 项目： ScaleLayout 文件： TouchImageView.java

@Override
public boolean onTouch(View v, MotionEvent event) {
    mScaleDetector.onTouchEvent(event);
    mGestureDetector.onTouchEvent(event);
    PointF curr = new PointF(event.getX(), event.getY());

    if (state == State.NONE || state == State.DRAG || state == State.FLING) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                last.set(curr);
                if (fling != null)
                    fling.cancelFling();
                setState(State.DRAG);
                break;

            case MotionEvent.ACTION_MOVE:
                if (state == State.DRAG) {
                    float deltaX = curr.x - last.x;
                    float deltaY = curr.y - last.y;
                    float fixTransX = getFixDragTrans(deltaX, viewWidth, getImageWidth());
                    float fixTransY = getFixDragTrans(deltaY, viewHeight, getImageHeight());
                    matrix.postTranslate(fixTransX, fixTransY);
                    fixTrans();
                    last.set(curr.x, curr.y);
                }
                break;

            case MotionEvent.ACTION_UP:
            case MotionEvent.ACTION_POINTER_UP:
                setState(State.NONE);
                break;
        }
    }

    setImageMatrix(matrix);

    //
    // User-defined OnTouchListener
    //
    if (userTouchListener != null) {
        userTouchListener.onTouch(v, event);
    }

    //
    // OnTouchImageViewListener is set: TouchImageView dragged by user.
    //
    if (touchImageViewListener != null) {
        touchImageViewListener.onMove();
    }

    //
    // indicate event was handled
    //
    return true;
}

方法所在类

android.view.MotionEvent