2019独角兽企业重金招聘Python工程师标准>>> 
private float startx;
private float starty;
private float upoffset;
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
startx = event.getX();
starty = event.getY();
break;
case MotionEvent.ACTION_MOVE:
offset = (int) (event.getX() - startx) / 3;
// Log.e("TAST", offset + "offset");
if (Math.abs(offset) > 10) {
Log.e("TAG", "Left and Right");
}
upoffset = event.getY() - starty;
if (Math.abs(upoffset) > 20) {
Log.e("TAG", "UP and Down");
}
invalidate();
default:
break;
}
return true;
}