public override bool OnInterceptTouchEvent(MotionEvent ev)
{
if (ev.Action != MotionEventActions.Down && mTouchView == null)
{
return base.OnInterceptTouchEvent(ev);
}
int action = (int)ev.Action;
switch (action & MotionEventCompat.ActionMask)
{
case (int)MotionEventActions.Down:
dx = 0.0f; // reset
dy = 0.0f; // reset
startClickTime = Java.Lang.JavaSystem.CurrentTimeMillis(); // reset
int oldPos = mTouchPosition;
mDownX = ev.GetX();
mDownY = ev.GetY();
mTouchState = TOUCH_STATE_NONE;
mTouchPosition = GetChildAdapterPosition(FindChildViewUnder((int)ev.GetX(), (int)ev.GetY()));
if (mTouchPosition == oldPos && mTouchView != null
&& mTouchView.IsOpen())
{
mTouchState = TOUCH_STATE_X;
mTouchView.OnSwipe(ev);
}
// find the touched child view
View view = null;
ViewHolder vh = FindViewHolderForAdapterPosition(mTouchPosition);
if (vh != null)
{
view = vh.ItemView;
}
// is not touched the opened menu view, so we intercept this touch event
if (mTouchPosition != oldPos && mTouchView != null && mTouchView.IsOpen())
{
mTouchView.SmoothCloseMenu();
mTouchView = null;
// try to cancel the touch event
MotionEvent cancelEvent = MotionEvent.Obtain(ev);
cancelEvent.Action = MotionEventActions.Cancel;
base.OnTouchEvent(cancelEvent);
return true;
}
if (view is SwipeMenuLayout)
{
mTouchView = (SwipeMenuLayout)view;
mTouchView.SetSwipeDirection(mDirection);
}
if (mTouchView != null)
{
mTouchView.OnSwipe(ev);
}
break;
case (int)MotionEventActions.Move:
dy = Math.Abs((ev.GetY() - mDownY));
dx = Math.Abs((ev.GetX() - mDownX));
if (mTouchState == TOUCH_STATE_X && mTouchView.IsSwipeEnable())
{
mTouchView.OnSwipe(ev);
ev.Action = MotionEventActions.Cancel;
base.OnTouchEvent(ev);
}
else if (mTouchState == TOUCH_STATE_NONE && mTouchView.IsSwipeEnable())
{
if (Math.Abs(dy) > mViewConfiguration.ScaledTouchSlop)
{
mTouchState = TOUCH_STATE_Y;
}
else if (dx > mViewConfiguration.ScaledTouchSlop)
{
mTouchState = TOUCH_STATE_X;
if (mOnSwipeListener != null)
{
mOnSwipeListener.onSwipeStart(mTouchPosition);
}
}
}
break;
case (int)MotionEventActions.Up:
Boolean isCloseOnUpEvent = false;
if (mTouchState == TOUCH_STATE_X && mTouchView.IsSwipeEnable())
{
isCloseOnUpEvent = !mTouchView.OnSwipe(ev);
if (mOnSwipeListener != null)
{
mOnSwipeListener.onSwipeEnd(mTouchPosition);
}
if (!mTouchView.IsOpen())
{
mTouchPosition = -1;
mTouchView = null;
}
ev.Action = MotionEventActions.Cancel;
base.OnTouchEvent(ev);
}
long clickDuration = Java.Lang.JavaSystem.CurrentTimeMillis() - startClickTime;
Boolean isOutDuration = clickDuration > ViewConfiguration.LongPressTimeout;
Boolean isOutX = dx > mViewConfiguration.ScaledTouchSlop;
Boolean isOutY = dy > mViewConfiguration.ScaledTouchSlop;
// long pressed or scaled touch, we just intercept up touch event
if (isOutDuration || isOutX || isOutY)
{
return true;
}
else {
float eX = ev.GetX();
float eY = ev.GetY();
View upView = FindChildViewUnder(eX, eY);
if (upView is SwipeMenuLayout)
{
SwipeMenuLayout smView = (SwipeMenuLayout)upView;
int x = (int)eX - smView.Left;
int y = (int)eY - smView.Top;
View menuView = smView.GetMenuView();
float translationX = ViewCompat.GetTranslationX(menuView);
float translationY = ViewCompat.GetTranslationY(menuView);
// intercept the up event when touched on the contentView of the opened SwipeMenuLayout
if (!(x >= menuView.Left + translationX &&
x <= menuView.Right + translationX &&
y >= menuView.Top + translationY &&
y <= menuView.Bottom + translationY) &&
isCloseOnUpEvent)
{
return true;
}
}
}
break;
case (int)MotionEventActions.Cancel:
if (mTouchView != null && mTouchView.IsSwipeEnable())
{
// when event has canceled, we just consider as up event
ev.Action = MotionEventActions.Up;
mTouchView.OnSwipe(ev);
}
break;
}
return base.OnInterceptTouchEvent(ev);
}
public void SmoothOpenMenu(int position)
{
View view = mLlm.FindViewByPosition(position);
if (view is SwipeMenuLayout) {
mTouchPosition = position;
// close pre opened swipe menu
if (mTouchView != null && mTouchView.IsOpen())
{
mTouchView.SmoothCloseMenu();
}
mTouchView = (SwipeMenuLayout)view;
mTouchView.SetSwipeDirection(mDirection);
mTouchView.SmoothOpenMenu();
}
}
