@Override
public boolean onTouchEvent(MotionEvent ev) {
final int action = ev.getAction();
final int x = (int) ev.getX();
final int y = (int) ev.getY();
if (action == MotionEvent.ACTION_DOWN && x > (this.getWidth() - 60)) mDragMode = true;
if (!mDragMode) return super.onTouchEvent(ev);
switch (action) {
case MotionEvent.ACTION_DOWN:
mStartPosition = pointToPosition(x, y);
if (mStartPosition != INVALID_POSITION) {
mItemPosition = mStartPosition - getFirstVisiblePosition();
mDragPointOffset = y - getChildAt(mItemPosition).getTop();
mDragPointOffset -= ((int) ev.getRawY()) - y;
startDrag(mItemPosition, y);
drag(50, y);
} else mDragMode = false;
break;
case MotionEvent.ACTION_MOVE:
drag(50, y);
final int mCurrentPosition = pointToPosition(x, y);
if ((y < 100) && (mCurrentPosition >= 0)) {
this.smoothScrollToPosition(mCurrentPosition - 1);
mDragListener.onStopDrag(getChildAt(mItemPosition));
} else if (((y - getHeight()) < 100)
&& ((mCurrentPosition > 0) && (mCurrentPosition < this.getCount()))) {
this.smoothScrollToPosition(mCurrentPosition + 1);
mDragListener.onStopDrag(getChildAt(mItemPosition));
}
break;
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
default:
mDragMode = false;
mEndPosition = pointToPosition(x, y);
stopDrag(mStartPosition - getFirstVisiblePosition());
if (mDropListener != null
&& mStartPosition != INVALID_POSITION
&& mEndPosition != INVALID_POSITION) mDropListener.onDrop(mStartPosition, mEndPosition);
break;
}
return true;
}
