List of usage examples for android.support.v4.view MotionEventCompat getY
public static float getY(MotionEvent event, int pointerIndex)
From source file:com.example.harris.onionweather.ui.swipe.SwipeRefreshLayout.java
@Override public boolean onTouchEvent(MotionEvent ev) { final int action = MotionEventCompat.getActionMasked(ev); if (mReturningToStart && action == MotionEvent.ACTION_DOWN) { mReturningToStart = false;/* ww w.j av a 2s .c o m*/ } if (!isEnabled() || mReturningToStart || canChildScrollUp()) { // Fail fast if we're not in a state where a swipe is possible return false; } switch (action) { case MotionEvent.ACTION_DOWN: mLastMotionY = mInitialMotionY = ev.getY(); mActivePointerId = MotionEventCompat.getPointerId(ev, 0); mIsBeingDragged = false; mCurrPercentage = 0; mIsPulling = false; mCanRefreshing = false; break; case MotionEvent.ACTION_MOVE: final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); if (pointerIndex < 0) { Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id."); return false; } final float y = MotionEventCompat.getY(ev, pointerIndex); final float yDiff = y - mInitialMotionY; if (!mIsBeingDragged && yDiff > mTouchSlop) { mIsBeingDragged = true; } if (mIsBeingDragged) { // User velocity passed min velocity; trigger a refresh // User movement passed distance; trigger a refresh // startRefresh(); mCanStartRefresh = yDiff / 2 > mDistanceToTriggerSync; // else { // Just track the user's movement setTriggerPercentage(mAccelerateInterpolator .getInterpolation(yDiff / mDistanceToTriggerSync > 1 ? 1 : yDiff / mDistanceToTriggerSync)); updateContentOffsetTop((int) (yDiff / 2)); if (mLastMotionY > y && mTarget.getTop() == getPaddingTop()) { // If the user puts the view back at the top, we // don't need to. This shouldn't be considered // cancelling the gesture as the user can restart from the top. removeCallbacks(mCancel); } // else { // updatePositionTimeout(); // } // } mLastMotionY = y; } break; case MotionEventCompat.ACTION_POINTER_DOWN: { final int index = MotionEventCompat.getActionIndex(ev); mLastMotionY = MotionEventCompat.getY(ev, index); mActivePointerId = MotionEventCompat.getPointerId(ev, index); break; } case MotionEventCompat.ACTION_POINTER_UP: onSecondaryPointerUp(ev); break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: if (mCanStartRefresh) { startRefresh(); } else { removeCallbacks(mCancel); post(mCancel); } mIsBeingDragged = false; mCurrPercentage = 0; mActivePointerId = INVALID_POINTER; return false; } return true; }
From source file:com.digreamon.android.widget.SlidingPaneLayout.java
@Override public boolean onInterceptTouchEvent(MotionEvent ev) { final int action = ev.getAction() & MotionEventCompat.ACTION_MASK; if (!mIsSlidable || (mIsUnableToDrag && action != MotionEvent.ACTION_DOWN)) { return super.onInterceptTouchEvent(ev); }//from ww w .ja va 2 s. c o m if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) { mActivePointerId = INVALID_POINTER; if (mVelocityTracker != null) { mVelocityTracker.recycle(); mVelocityTracker = null; } return false; } boolean interceptTap = false; switch (action) { case MotionEvent.ACTION_MOVE: { final int activePointerId = mActivePointerId; if (activePointerId == INVALID_POINTER) { // No valid pointer = no valid drag. Ignore. break; } final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId); final float x = MotionEventCompat.getX(ev, pointerIndex); final float y = MotionEventCompat.getY(ev, pointerIndex); final float dx = x - mLastMotionX; final float xDiff = Math.abs(dx); final float yDiff = Math.abs(y - mLastMotionY); if (dx != 0 && !isGutterDrag(mLastMotionX, dx) && canScroll(this, false, (int) dx, (int) x, (int) y)) { mInitialMotionX = mLastMotionX = x; mLastMotionY = y; mIsUnableToDrag = true; return false; } if (xDiff > mTouchSlop && xDiff > yDiff && isSlideablePaneUnder(x, y)) { mLastMotionX = dx > 0 ? mInitialMotionX + mTouchSlop : mInitialMotionX - mTouchSlop; setScrollState(SCROLL_STATE_DRAGGING); } else if (yDiff > mTouchSlop) { mIsUnableToDrag = true; return false; } if (mScrollState == SCROLL_STATE_DRAGGING && performDrag(x, y)) { invalidate(); } break; } case MotionEvent.ACTION_DOWN: { final float x = ev.getX(); final float y = ev.getY(); mIsUnableToDrag = false; mInitialMotionX = x; mInitialMotionY = y; mActivePointerId = MotionEventCompat.getPointerId(ev, 0); if (isSlideablePaneUnder(x, y)) { mLastMotionX = x; mLastMotionY = y; if (mScrollState == SCROLL_STATE_SETTLING || mScrollState == SCROLL_STATE_IDLE) { // Start dragging immediately. "Catch" setScrollState(SCROLL_STATE_DRAGGING); } else if (isDimmed(getCoverView())) { interceptTap = true; } } break; } case MotionEventCompat.ACTION_POINTER_UP: onSecondaryPointerUp(ev); break; } if (mVelocityTracker == null) { mVelocityTracker = VelocityTracker.obtain(); } mVelocityTracker.addMovement(ev); return mScrollState == SCROLL_STATE_DRAGGING || interceptTap; }
From source file:com.lynx.lib.widget.swipelayout.SwipeRefreshLayout.java
@Override public boolean onInterceptTouchEvent(MotionEvent ev) { ensureTarget();/*from w w w. j av a 2 s.co m*/ final int action = MotionEventCompat.getActionMasked(ev); if (mReturningToStart && action == MotionEvent.ACTION_DOWN) { mReturningToStart = false; } if (!isEnabled() || mReturningToStart) { // Fail fast if we're not in a state where a swipe is possible return false; } switch (action) { case MotionEvent.ACTION_DOWN: mLastMotionY = mInitialMotionY = ev.getY(); mActivePointerId = MotionEventCompat.getPointerId(ev, 0); mIsBeingDragged = false; mCurrPercentage = 0; mStartPoint = mInitialMotionY; // up/down???????? // ????canChildScrollUp/canChildScrollDown // ???????? up = canChildScrollUp(); down = canChildScrollDown(); 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 int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); if (pointerIndex < 0) { Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id."); return false; } final float y = MotionEventCompat.getY(ev, pointerIndex); // final float yDiff = y - mInitialMotionY; final float yDiff = y - mStartPoint; // ???? if ((mLastDirection == Mode.PULL_FROM_START && yDiff < 0) || (mLastDirection == Mode.PULL_FROM_END && yDiff > 0)) { return false; } // ??? // mStartPoint if ((canChildScrollUp() && yDiff > 0) || (canChildScrollDown() && yDiff < 0)) { mStartPoint = y; } // if (yDiff > mTouchSlop) { // ??? if (canChildScrollUp() || mLastDirection == Mode.PULL_FROM_END) { mIsBeingDragged = false; return false; } if ((mMode == Mode.PULL_FROM_START) || (mMode == Mode.BOTH)) { mLastMotionY = y; mIsBeingDragged = true; mLastDirection = Mode.PULL_FROM_START; } } // else if (-yDiff > mTouchSlop) { // ??? if (canChildScrollDown() || mLastDirection == Mode.PULL_FROM_START) { mIsBeingDragged = false; return false; } // ???????? if (!up && !down && !loadNoFull) { mIsBeingDragged = false; return false; } if ((mMode == Mode.PULL_FROM_END) || (mMode == Mode.BOTH)) { mLastMotionY = y; mIsBeingDragged = true; mLastDirection = Mode.PULL_FROM_END; } } break; case MotionEventCompat.ACTION_POINTER_UP: onSecondaryPointerUp(ev); break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: mIsBeingDragged = false; mCurrPercentage = 0; mActivePointerId = INVALID_POINTER; mLastDirection = Mode.DISABLED; break; } return mIsBeingDragged; }
From source file:com.hybunion.common.view.SwipeRefreshLayout.java
@Override public boolean onTouchEvent(MotionEvent ev) { final int action = MotionEventCompat.getActionMasked(ev); if (mReturningToStart && action == MotionEvent.ACTION_DOWN) { mReturningToStart = false;//from w w w. j a va 2 s. c o m } if (!isEnabled() || mReturningToStart || canChildScrollUp()) { // Fail fast if we're not in a state where a swipe is possible return false; } switch (action) { case MotionEvent.ACTION_DOWN: mLastMotionY = mInitialMotionY = ev.getY(); mActivePointerId = MotionEventCompat.getPointerId(ev, 0); mIsBeingDragged = false; mCurrPercentage = 0; mIsPulling = false; mCanRefreshing = false; break; case MotionEvent.ACTION_MOVE: final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); if (pointerIndex < 0) { Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id."); return false; } final float y = MotionEventCompat.getY(ev, pointerIndex); final float yDiff = y - mInitialMotionY; if (!mIsBeingDragged && yDiff > mTouchSlop) { mIsBeingDragged = true; } if (mIsBeingDragged) { // User velocity passed min velocity; trigger a refresh if (yDiff / 2 > mDistanceToTriggerSync) { // User movement passed distance; trigger a refresh // startRefresh(); mCanStartRefresh = true; } else { mCanStartRefresh = false; } // else { // Just track the user's movement setTriggerPercentage(mAccelerateInterpolator .getInterpolation(yDiff / mDistanceToTriggerSync > 1 ? 1 : yDiff / mDistanceToTriggerSync)); updateContentOffsetTop((int) (yDiff / 2)); if (mLastMotionY > y && mTarget.getTop() == getPaddingTop()) { // If the user puts the view back at the top, we // don't need to. This shouldn't be considered // cancelling the gesture as the user can restart from the top. removeCallbacks(mCancel); } // else { // updatePositionTimeout(); // } // } mLastMotionY = y; } break; case MotionEventCompat.ACTION_POINTER_DOWN: { final int index = MotionEventCompat.getActionIndex(ev); mLastMotionY = MotionEventCompat.getY(ev, index); mActivePointerId = MotionEventCompat.getPointerId(ev, index); break; } case MotionEventCompat.ACTION_POINTER_UP: onSecondaryPointerUp(ev); break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: if (mCanStartRefresh) { startRefresh(); } else { removeCallbacks(mCancel); post(mCancel); } mIsBeingDragged = false; mCurrPercentage = 0; mActivePointerId = INVALID_POINTER; return false; } return true; }
From source file:com.cdwx.moka.widget.SwipeRefreshLayout.java
@Override public boolean onInterceptTouchEvent(MotionEvent ev) { ensureTarget();//from w w w .j a va 2 s .co m final int action = MotionEventCompat.getActionMasked(ev); if (mReturningToStart && action == MotionEvent.ACTION_DOWN) { mReturningToStart = false; } if (!isEnabled() || mReturningToStart) { // Fail fast if we're not in a state where a swipe is possible return false; } switch (action) { case MotionEvent.ACTION_DOWN: mLastMotionY = mInitialMotionY = ev.getY(); mActivePointerId = MotionEventCompat.getPointerId(ev, 0); mIsBeingDragged = false; mCurrPercentage = 0; mStartPoint = mInitialMotionY; //up/down???????? //????canChildScrollUp/canChildScrollDown //???????? up = canChildScrollUp(); down = canChildScrollDown(); 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 int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); if (pointerIndex < 0) { Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id."); return false; } final float y = MotionEventCompat.getY(ev, pointerIndex); // final float yDiff = y - mInitialMotionY; final float yDiff = y - mStartPoint; //???? if ((mLastDirection == Mode.PULL_FROM_START && yDiff < 0) || (mLastDirection == Mode.PULL_FROM_END && yDiff > 0)) { return false; } //??? //mStartPoint if ((canChildScrollUp() && yDiff > 0) || (canChildScrollDown() && yDiff < 0)) { mStartPoint = y; } // if (yDiff > mTouchSlop) { //??? if (canChildScrollUp() || mLastDirection == Mode.PULL_FROM_END) { mIsBeingDragged = false; return false; } if ((mMode == Mode.PULL_FROM_START) || (mMode == Mode.BOTH)) { mLastMotionY = y; mIsBeingDragged = true; mLastDirection = Mode.PULL_FROM_START; } } // else if (-yDiff > mTouchSlop) { //??? if (canChildScrollDown() || mLastDirection == Mode.PULL_FROM_START) { mIsBeingDragged = false; return false; } //???????? if (!up && !down && !loadNoFull) { mIsBeingDragged = false; return false; } if ((mMode == Mode.PULL_FROM_END) || (mMode == Mode.BOTH)) { mLastMotionY = y; mIsBeingDragged = true; mLastDirection = Mode.PULL_FROM_END; } } break; case MotionEventCompat.ACTION_POINTER_UP: onSecondaryPointerUp(ev); break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: mIsBeingDragged = false; mCurrPercentage = 0; mActivePointerId = INVALID_POINTER; mLastDirection = Mode.DISABLED; break; } return mIsBeingDragged; }
From source file:com.hynet.mergepay.components.widget.panellayout.ViewDragHelper.java
public boolean shouldInterceptTouchEvent(MotionEvent ev) { final int action = MotionEventCompat.getActionMasked(ev); final int actionIndex = MotionEventCompat.getActionIndex(ev); if (action == MotionEvent.ACTION_DOWN) { // Reset things for a new event stream, just in case we didn't get // the whole previous stream. cancel();/*from w w w . j ava2 s . co m*/ } if (mVelocityTracker == null) { mVelocityTracker = VelocityTracker.obtain(); } mVelocityTracker.addMovement(ev); switch (action) { case MotionEvent.ACTION_DOWN: { final float x = ev.getX(); final float y = ev.getY(); final int pointerId = MotionEventCompat.getPointerId(ev, 0); saveInitialMotion(x, y, pointerId); final View toCapture = findTopChildUnder((int) x, (int) y); // Catch a settling view if possible. if (toCapture == mCapturedView && mDragState == STATE_SETTLING) { tryCaptureViewForDrag(toCapture, pointerId); } final int edgesTouched = mInitialEdgesTouched[pointerId]; if ((edgesTouched & mTrackingEdges) != 0) { mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId); } break; } case MotionEventCompat.ACTION_POINTER_DOWN: { final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex); final float x = MotionEventCompat.getX(ev, actionIndex); final float y = MotionEventCompat.getY(ev, actionIndex); saveInitialMotion(x, y, pointerId); // A ViewDragHelper can only manipulate one view at a time. if (mDragState == STATE_IDLE) { final int edgesTouched = mInitialEdgesTouched[pointerId]; if ((edgesTouched & mTrackingEdges) != 0) { mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId); } } else if (mDragState == STATE_SETTLING) { // Catch a settling view if possible. final View toCapture = findTopChildUnder((int) x, (int) y); if (toCapture == mCapturedView) { tryCaptureViewForDrag(toCapture, pointerId); } } break; } case MotionEvent.ACTION_MOVE: { // First to cross a touch slop over a draggable view wins. Also report edge drags. final int pointerCount = MotionEventCompat.getPointerCount(ev); for (int i = 0; i < pointerCount && mInitialMotionX != null && mInitialMotionY != null; i++) { final int pointerId = MotionEventCompat.getPointerId(ev, i); if (pointerId >= mInitialMotionX.length || pointerId >= mInitialMotionY.length) { continue; } final float x = MotionEventCompat.getX(ev, i); final float y = MotionEventCompat.getY(ev, i); final float dx = x - mInitialMotionX[pointerId]; final float dy = y - mInitialMotionY[pointerId]; reportNewEdgeDrags(dx, dy, pointerId); if (mDragState == STATE_DRAGGING) { // Callback might have started an edge drag break; } final View toCapture = findTopChildUnder((int) mInitialMotionX[pointerId], (int) mInitialMotionY[pointerId]); if (toCapture != null && checkTouchSlop(toCapture, dx, dy) && tryCaptureViewForDrag(toCapture, pointerId)) { break; } } saveLastMotion(ev); break; } case MotionEventCompat.ACTION_POINTER_UP: { final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex); clearMotionHistory(pointerId); break; } case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: { cancel(); break; } } return mDragState == STATE_DRAGGING; }
From source file:com.example.googleplay.view.SwipeRefreshLayout.java
@Override public boolean onInterceptTouchEvent(MotionEvent ev) { ensureTarget();/*from w w w .ja v a2s. co m*/ final int action = MotionEventCompat.getActionMasked(ev); if (mReturningToStart && action == MotionEvent.ACTION_DOWN) { mReturningToStart = false; } if (!isEnabled() || mReturningToStart) { // Fail fast if we're not in a state where a swipe is possible return false; } switch (action) { case MotionEvent.ACTION_DOWN: mLastMotionY = mInitialMotionY = ev.getY(); mActivePointerId = MotionEventCompat.getPointerId(ev, 0); mIsBeingDragged = false; mCurrPercentage = 0; mStartPoint = mInitialMotionY; //up/down???????? //????canChildScrollUp/canChildScrollDown //???????? up = canChildScrollUp(); down = canChildScrollDown(); return false; 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 int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); if (pointerIndex < 0) { Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id."); return false; } final float y = MotionEventCompat.getY(ev, pointerIndex); // final float yDiff = y - mInitialMotionY; final float yDiff = y - mStartPoint; //???? if ((mLastDirection == Mode.PULL_FROM_START && yDiff < 0) || (mLastDirection == Mode.PULL_FROM_END && yDiff > 0)) { return false; } //??? //mStartPoint if ((canChildScrollUp() && yDiff > 0) || (canChildScrollDown() && yDiff < 0)) { mStartPoint = y; } // if (yDiff > mTouchSlop) { //??? if (canChildScrollUp() || mLastDirection == Mode.PULL_FROM_END) { mIsBeingDragged = false; return false; } if ((mMode == Mode.PULL_FROM_START) || (mMode == Mode.BOTH)) { mLastMotionY = y; mIsBeingDragged = true; mLastDirection = Mode.PULL_FROM_START; } } // else if (-yDiff > mTouchSlop) { //??? if (canChildScrollDown() || mLastDirection == Mode.PULL_FROM_START) { mIsBeingDragged = false; return false; } //???????? if (!up && !down && !loadNoFull) { mIsBeingDragged = false; return false; } if ((mMode == Mode.PULL_FROM_END) || (mMode == Mode.BOTH)) { mLastMotionY = y; mIsBeingDragged = true; mLastDirection = Mode.PULL_FROM_END; } } break; case MotionEventCompat.ACTION_POINTER_UP: onSecondaryPointerUp(ev); break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: mIsBeingDragged = false; mCurrPercentage = 0; mActivePointerId = INVALID_POINTER; mLastDirection = Mode.DISABLED; break; } return mIsBeingDragged; }
From source file:com.hb.hkm.slidinglayer.SlidLayer.java
@Override public boolean onTouchEvent(MotionEvent ev) { if (!mEnabled || !mIsDragging && !mLastTouchAllowed && !allowSlidingFromHere(mInitialX, mInitialY)) { return false; }/*from ww w .ja v a 2s. c om*/ final int action = ev.getAction(); if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_OUTSIDE) { mLastTouchAllowed = false; } else { mLastTouchAllowed = true; } if (mVelocityTracker == null) { mVelocityTracker = VelocityTracker.obtain(); } mVelocityTracker.addMovement(ev); switch (action & MotionEventCompat.ACTION_MASK) { case MotionEvent.ACTION_DOWN: completeScroll(); // Remember where the motion event started mLastX = mInitialX = ev.getX(); mLastY = mInitialY = ev.getY(); mActivePointerId = MotionEventCompat.getPointerId(ev, 0); break; case MotionEvent.ACTION_MOVE: if (!mIsDragging) { final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); if (pointerIndex == INVALID_VALUE) { mActivePointerId = INVALID_VALUE; break; } final float x = MotionEventCompat.getX(ev, pointerIndex); final float xDiff = Math.abs(x - mLastX); final float y = MotionEventCompat.getY(ev, pointerIndex); final float yDiff = Math.abs(y - mLastY); final boolean validHorizontalDrag = xDiff > mTouchSlop && xDiff > yDiff; final boolean validVerticalDrag = yDiff > mTouchSlop && yDiff > xDiff; if (validHorizontalDrag) { mLastX = x; } else if (validVerticalDrag) { mLastY = y; } if (validHorizontalDrag || validVerticalDrag) { mIsDragging = true; setDrawingCacheEnabled(true); } } if (mIsDragging) { // Scroll to follow the motion event final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); if (activePointerIndex == INVALID_VALUE) { mActivePointerId = INVALID_VALUE; break; } final float x = MotionEventCompat.getX(ev, activePointerIndex); final float y = MotionEventCompat.getY(ev, activePointerIndex); final float deltaX = mLastX - x; final float deltaY = mLastY - y; mLastX = x; mLastY = y; final float oldScrollX = getScrollX(); final float oldScrollY = getScrollY(); float scrollX = oldScrollX + deltaX; float scrollY = oldScrollY + deltaY; // Log.d("Layer", String.format("Layer scrollX[%f],scrollY[%f]", scrollX, scrollY)); final float leftBound, rightBound; final float bottomBound, topBound; switch (mScreenSide) { case STICK_TO_LEFT: topBound = bottomBound = rightBound = 0; leftBound = getWidth(); // How far left we can scroll break; case STICK_TO_RIGHT: rightBound = -getWidth(); topBound = bottomBound = leftBound = 0; break; case STICK_TO_TOP: topBound = getHeight(); bottomBound = rightBound = leftBound = 0; break; case STICK_TO_BOTTOM: topBound = rightBound = leftBound = 0; bottomBound = -getHeight(); break; default: topBound = bottomBound = rightBound = leftBound = 0; break; } if (scrollX > leftBound) { scrollX = leftBound; } else if (scrollX < rightBound) { scrollX = rightBound; } if (scrollY > topBound) { scrollY = topBound; } else if (scrollY < bottomBound) { scrollY = bottomBound; } // Keep the precision mLastX += scrollX - (int) scrollX; mLastY += scrollY - (int) scrollY; scrollToAndNotify((int) scrollX, (int) scrollY); } break; case MotionEvent.ACTION_UP: if (mIsDragging) { final VelocityTracker velocityTracker = mVelocityTracker; velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity); final int initialVelocityX = (int) VelocityTrackerCompat.getXVelocity(velocityTracker, mActivePointerId); final int initialVelocityY = (int) VelocityTrackerCompat.getYVelocity(velocityTracker, mActivePointerId); final int scrollX = getScrollX(); final int scrollY = getScrollY(); final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId); final float x = MotionEventCompat.getX(ev, activePointerIndex); final float y = MotionEventCompat.getY(ev, activePointerIndex); int nextState = determineNextStateForDrag(scrollX, scrollY, initialVelocityX, initialVelocityY, (int) mInitialX, (int) mInitialY, (int) x, (int) y); setLayerState(nextState, true, true, initialVelocityX, initialVelocityY); mActivePointerId = INVALID_VALUE; endDrag(); } else if (changeStateOnTap) { int nextState = determineNextStateAfterTap(); setLayerState(nextState, true, true); } break; case MotionEvent.ACTION_CANCEL: if (mIsDragging) { setLayerState(mCurrentState, true, true); mActivePointerId = INVALID_VALUE; endDrag(); } break; case MotionEventCompat.ACTION_POINTER_DOWN: { final int index = MotionEventCompat.getActionIndex(ev); mLastX = MotionEventCompat.getX(ev, index); mLastY = MotionEventCompat.getY(ev, index); mActivePointerId = MotionEventCompat.getPointerId(ev, index); break; } case MotionEventCompat.ACTION_POINTER_UP: onSecondaryPointerUp(ev); mLastX = MotionEventCompat.getX(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId)); mLastY = MotionEventCompat.getY(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId)); break; } if (mActivePointerId == INVALID_VALUE) { mLastTouchAllowed = false; } return true; }
From source file:com.customviewcollection.nestedscroll.NestedScrollView.java
@Override public boolean onInterceptTouchEvent(MotionEvent ev) { /*/* w w w . jav a 2s.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. */ /* * Shortcut the most recurring case: the user is in the dragging * state and he is moving his finger. We want to intercept this * motion. */ final int action = ev.getAction(); if ((action == MotionEvent.ACTION_MOVE) && (mIsBeingDragged)) { return true; } switch (action & MotionEventCompat.ACTION_MASK) { case MotionEvent.ACTION_MOVE: { /* * mIsBeingDragged == false, otherwise the shortcut would have caught it. Check * whether the user has moved far enough from his original down touch. */ /* * Locally do absolute value. mLastMotionY is set to the y value * of the down event. */ final int activePointerId = mActivePointerId; if (activePointerId == INVALID_POINTER) { // If we don't have a valid id, the touch down wasn't on content. break; } final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId); if (pointerIndex == -1) { Log.e(TAG, "Invalid pointerId=" + activePointerId + " in onInterceptTouchEvent"); break; } final int y = (int) MotionEventCompat.getY(ev, pointerIndex); final int yDiff = Math.abs(y - mLastMotionY); if (yDiff > mTouchSlop && (getNestedScrollAxes() & ViewCompat.SCROLL_AXIS_VERTICAL) == 0) { mIsBeingDragged = true; mLastMotionY = y; initVelocityTrackerIfNotExists(); mVelocityTracker.addMovement(ev); mNestedYOffset = 0; final ViewParent parent = getParent(); if (parent != null) { parent.requestDisallowInterceptTouchEvent(true); } } break; } case MotionEvent.ACTION_DOWN: { final int y = (int) ev.getY(); if (!inChild((int) ev.getX(), (int) y)) { mIsBeingDragged = false; recycleVelocityTracker(); break; } /* * Remember location of down touch. * ACTION_DOWN always refers to pointer index 0. */ mLastMotionY = y; mActivePointerId = MotionEventCompat.getPointerId(ev, 0); initOrResetVelocityTracker(); mVelocityTracker.addMovement(ev); /* * If being flinged and user touches the screen, initiate drag; * otherwise don't. mScroller.isFinished should be false when * being flinged. We need to call computeScrollOffset() first so that * isFinished() is correct. */ mScroller.computeScrollOffset(); mIsBeingDragged = !mScroller.isFinished(); startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL); break; } case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: /* Release the drag */ mIsBeingDragged = false; mActivePointerId = INVALID_POINTER; recycleVelocityTracker(); if (mScroller.springBack(getScrollX(), getScrollY(), 0, 0, 0, getScrollRange())) { ViewCompat.postInvalidateOnAnimation(this); } stopNestedScroll(); 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.k.xdiary.views.MyNestedScrollView.java
@Override public boolean onInterceptTouchEvent(MotionEvent ev) { /*//ww w. ja v a2 s . c om * 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. */ /* * Shortcut the most recurring case: the user is in the dragging * state and he is moving his finger. We want to intercept this * motion. */ final int action = ev.getAction(); if ((action == MotionEvent.ACTION_MOVE) && (mIsBeingDragged)) { return true; } switch (action & MotionEventCompat.ACTION_MASK) { case MotionEvent.ACTION_MOVE: { /* * mIsBeingDragged == false, otherwise the shortcut would have caught it. Check * whether the user has moved far enough from his original down touch. */ /* * Locally do absolute value. mLastMotionY is set to the y value * of the down event. */ final int activePointerId = mActivePointerId; if (activePointerId == INVALID_POINTER) { // If we don't have a valid id, the touch down wasn't on content. break; } final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId); if (pointerIndex == -1) { Log.e(TAG, "Invalid pointerId=" + activePointerId + " in onInterceptTouchEvent"); break; } final int y = (int) MotionEventCompat.getY(ev, pointerIndex); final int yDiff = Math.abs(y - mLastMotionY); if (yDiff > mTouchSlop && (getNestedScrollAxes() & ViewCompat.SCROLL_AXIS_VERTICAL) == 0) { mIsBeingDragged = true; mLastMotionY = y; initVelocityTrackerIfNotExists(); mVelocityTracker.addMovement(ev); mNestedYOffset = 0; final ViewParent parent = getParent(); if (parent != null) { parent.requestDisallowInterceptTouchEvent(true); } } break; } case MotionEvent.ACTION_DOWN: { final int y = (int) ev.getY(); if (!inChild((int) ev.getX(), (int) y)) { mIsBeingDragged = false; recycleVelocityTracker(); break; } /* * Remember location of down touch. * ACTION_DOWN always refers to pointer index 0. */ mLastMotionY = y; mActivePointerId = MotionEventCompat.getPointerId(ev, 0); initOrResetVelocityTracker(); mVelocityTracker.addMovement(ev); /* * If being flinged and user touches the screen, initiate drag; * otherwise don't. mScroller.isFinished should be false when * being flinged. We need to call computeScrollOffset() first so that * isFinished() is correct. */ mScroller.computeScrollOffset(); mIsBeingDragged = !mScroller.isFinished(); startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL); break; } case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: /* Release the drag */ mIsBeingDragged = false; mActivePointerId = INVALID_POINTER; recycleVelocityTracker(); if (mScroller.springBack(getScrollX(), getScrollY(), 0, 0, 0, getScrollRange())) { ViewCompat.postInvalidateOnAnimation(this); } stopNestedScroll(); 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; }