Android 关于事件分发 dispatchTouchEvent

override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {

if (ev!!.action == KeyEvent.ACTION_DOWN) {
val location = IntArray(2)
tv_test.getLocationOnScreen(location)
var rectf = RectF(location[0].toFloat(), location[1].toFloat(), (location[0] + tv_test.width).toFloat(), (location[1] + tv_test.height).toFloat())
Log.e("dispatchTouchEvent", rectf.contains(ev.x, ev.y).toString());
return true
}
return super.dispatchTouchEvent(ev)
}