下面这代码实现的是，按住PopupWindow中的按钮，移动可实现整个PopupWindow的移动，初始化为Gravity.BOTTOM的位置，第一次因为该window在此位置，所以移动是正确的，但第二次开始，点击按钮开始移动的那一瞬间，就会突然跳到最开始的位置，然后才移动
private void createPopup()
{
LayoutInflater flater = (LayoutInflater)getSystemService(LAYOUT_INFLATER_SERVICE);
View view = flater.inflate(R.layout.pop, null);
view.findViewById(R.id.button2).setOnTouchListener(new OnTouchListener()
{
public boolean onTouch(View v, MotionEvent event)
{
int action = event.getAction();
switch(action)
{
case MotionEvent.ACTION_DOWN:
lastX = (int)event.getRawX();
lastY = (int)event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
int dx = (int)event.getRawX() - lastX;
int dy = (int)event.getRawY() - lastY;
popup.update(dx, dy, -1, -1);
break;
}
return true;
}
});
popup = new PopupWindow(view, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
popup.setFocusable(false);
popup.setTouchable(true);
popup.setOutsideTouchable(true);
//popup.showAsDropDown(findViewById(R.id.ding), 100, 100);
popup.showAtLocation(findViewById(R.id.button1), Gravity.BOTTOM, 0, 0);
//
popup.update();
}
