在触摸屏幕时让听众保持工作的简便方法

Question

以下是我的方案：LinearLayout作为Activity的主要布局。布局包含ImageView，其中有onClickListener。

当用户将手指放在屏幕上时，触发ImageView侦听器的最简单方法是什么。这是用户持有设备并错误地触摸屏幕（因此onTouch触发）但是想要按ImageView的一般情况。在这种情况下，由于屏幕已被触摸，当按下ImageView时，没有任何反应。

Answer 1

我猜您可以使用 ACTION_DOWN ＆amp; ACTION_POINTER_DOWN ，稍后进行第二次触摸。您需要在触摸列表器中处理这些事件。这个监听器可以在你的根布局上。

public boolean onTouchEvent(MotionEvent event) {
}

<强> See here, some excerpts are

When multiple pointers touch the screen at the same time, the system generates the following touch events:
ACTION_DOWN—For the first pointer that touches the screen. This starts the gesture. The pointer data for this pointer is always at index 0 in the MotionEvent.
ACTION_POINTER_DOWN—For extra pointers that enter the screen beyond the first. The pointer data for this pointer is at the index returned by getActionIndex().
ACTION_MOVE—A change has happened during a press gesture.
ACTION_POINTER_UP—Sent when a non-primary pointer goes up.
ACTION_UP—Sent when the last pointer leaves the screen.