private static void destroyResources(View view) {
view.destroyHardwareResources();
if (view instanceof ViewGroup) {
ViewGroup group = (ViewGroup) view;
int count = group.getChildCount();
for (int i = 0; i < count; i++) {
destroyResources(group.getChildAt(i));
}
}
}
/**
* Tests scrollability within child views of v given a delta of dx.
*
* @param v View to test for horizontal scrollability
* @param checkV Whether the view v passed should itself be checked for scrollability (true), or
* just its children (false).
* @param dx Delta scrolled in pixels
* @param x X coordinate of the active touch point
* @param y Y coordinate of the active touch point
* @return true if child views of v can be scrolled by delta of dx.
*/
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
if (v instanceof ViewGroup) {
final ViewGroup group = (ViewGroup) v;
final int scrollX = v.getScrollX();
final int scrollY = v.getScrollY();
final int count = group.getChildCount();
// Count backwards - let topmost views consume scroll distance first.
for (int i = count - 1; i >= 0; i--) {
final View child = group.getChildAt(i);
if (x + scrollX >= child.getLeft()
&& x + scrollX < child.getRight()
&& y + scrollY >= child.getTop()
&& y + scrollY < child.getBottom()
&& canScroll(
child, true, dx, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
return true;
}
}
}
return checkV && ViewCompat.canScrollHorizontally(v, -dx);
}
@SuppressLint("ResourceAsColor")
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR1)
@Override
public boolean onTouch(final View view, MotionEvent event) {
if (mViewWidth < 2) {
mViewWidth = mListView.getWidth();
smallWidth = mViewWidth / 7;
textwidth2 = mViewWidth / 3;
textwidth = textwidth2;
// 原版
// largewidth = textwidth+textwidth2;
// 自己修改
largewidth = textwidth;
}
int tempwidth = 0;
if (SwipeType == 1) tempwidth = smallWidth;
else tempwidth = textwidth2 / 2;
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
{
if (mPaused) {
return false;
}
Rect rect = new Rect();
int childCount = mListView.getChildCount();
int[] listViewCoords = new int[2];
mListView.getLocationOnScreen(listViewCoords);
int x = (int) event.getRawX() - listViewCoords[0];
int y = (int) event.getRawY() - listViewCoords[1];
ViewGroup child;
for (int i = 0; i < childCount; i++) {
child = (ViewGroup) mListView.getChildAt(i);
child.getHitRect(rect);
if (rect.contains(x, y)) {
mDownView_parent = child;
mDownView = (ViewGroup) child.findViewById(R.id.list_display_view_container);
if (mDownView_parent.getChildCount() == 1) {
textheight = mDownView_parent.getHeight();
if (SwipeType == Dismiss) {
HalfColor = singleColor;
// HalfDrawable =
// activity.getResources().getDrawable(R.drawable.content_discard);
}
SetBackGroundforList();
}
if (old_mDownView != null && mDownView != old_mDownView) {
ResetListItem(old_mDownView);
old_mDownView = null;
return false;
}
break;
}
}
if (mDownView != null) {
mDownX = event.getRawX();
mDownY = event.getRawY();
mDownPosition = mListView.getPositionForView(mDownView);
mVelocityTracker = VelocityTracker.obtain();
mVelocityTracker.addMovement(event);
} else {
mDownView = null;
}
// mSwipeDetected = false;
temp_position = mListView.pointToPosition((int) event.getX(), (int) event.getY());
view.onTouchEvent(event);
return true;
}
case MotionEvent.ACTION_UP:
{
if (mVelocityTracker == null) {
break;
}
float deltaX = event.getRawX() - mDownX;
// 在OnItemClick事件中判断如果Deltax！=0则表示不是点击事件
DeltaX = deltaX;
mVelocityTracker.addMovement(event);
mVelocityTracker.computeCurrentVelocity(1000); // 1000 by defaut but
float velocityX = mVelocityTracker.getXVelocity(); // it was too much
float absVelocityX = Math.abs(velocityX);
float absVelocityY = Math.abs(mVelocityTracker.getYVelocity());
boolean swipe = false;
boolean swipeRight = false;
if (Math.abs(deltaX) > tempwidth) {
swipe = true;
swipeRight = deltaX > 0;
} else if (mMinFlingVelocity <= absVelocityX
&& absVelocityX <= mMaxFlingVelocity
&& absVelocityY < absVelocityX) {
// dismiss only if flinging in the same direction as dragging
swipe = (velocityX < 0) == (deltaX < 0);
swipeRight = mVelocityTracker.getXVelocity() > 0;
}
if (deltaX < 0 && swipe) {
mListView.setDrawSelectorOnTop(false);
// && Math.abs(DeltaY)<30
if (swipe && !swipeRight && deltaX <= -tempwidth && Math.abs(DeltaY) < 100) {
FullSwipeTrigger();
} else if (deltaX >= -textwidth && SwipeType == Double) {
ResetListItem(mDownView);
} else {
ResetListItem(mDownView);
}
} else if (deltaX != 0) {
ResetListItem(mDownView);
}
mVelocityTracker.recycle();
mVelocityTracker = null;
mDownX = 0;
mDownView = null;
mDownPosition = ListView.INVALID_POSITION;
mSwiping = false;
break;
}
// 根据手势滑动方向滑出滑入
case MotionEvent.ACTION_MOVE:
{
float deltaX = event.getRawX() - mDownX;
float deltaY = event.getRawY() - mDownY;
DeltaY = deltaY;
if (mVelocityTracker == null || mPaused || deltaX > 0) {
break;
}
mVelocityTracker.addMovement(event);
// && Math.abs(deltaY)<30
if (Math.abs(deltaX) > (mSlop * 5) && Math.abs(deltaY) < 50) {
mSwiping = true;
mListView.requestDisallowInterceptTouchEvent(true);
// Cancel ListView's touch (un-highlighting the item)
MotionEvent cancelEvent = MotionEvent.obtain(event);
cancelEvent.setAction(
MotionEvent.ACTION_CANCEL
| (event.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
mListView.onTouchEvent(cancelEvent);
cancelEvent.recycle();
} else if (Math.abs(deltaY) > 50) {
mSwiping = false;
// ResetListItem(mDownView);
}
System.out.println(
"<<<<<<<<<" + deltaY + "<<<<<<" + deltaX + "<<<<" + mSwiping + "<<<<<" + mSlop * 10);
if (mSwiping && deltaX < 0) {
int width;
// if(SwipeType==1){
width = textwidth2;
// }
// else{
// width = largewidth;
// }
if (-deltaX < width) {
mDownView.setTranslationX(deltaX);
return false;
}
return false;
} else if (mSwiping) {
ResetListItem(mDownView);
}
break;
}
}
return false;
}
