@Override
public boolean onTouchEvent(MotionEvent event) {
int x = (int) event.getX();
int y = (int) event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
lastX = (int) event.getX();
lastY = (int) event.getY();
break;
case MotionEvent.ACTION_MOVE:
int offsetX = x - lastX;
int offsetY = y - lastY;
((View) getParent()).scrollBy(-offsetX, -offsetY);
break;
case MotionEvent.ACTION_UP:
// 手指离开时，执行滑动过程
View viewGroup = ((View) getParent());
ScrollerHelper.getScroller()
.startScroll(
viewGroup.getScrollX(),
viewGroup.getScrollY(),
-viewGroup.getScrollX(),
-viewGroup.getScrollY());
invalidate();
break;
}
return true;
}
@Override
public void computeScroll() {
super.computeScroll();
ScrollerHelper.doThisInComputeScroll(this);
}
private void ininView(Context context) {
setBackgroundColor(Color.BLUE);
ScrollerHelper.initScroll(context);
}
