如何从Android中的事件坐标获取视图？

问题描述

我想使用 onInterceptTouchEvent（MotionEvent ev）拦截父视图中的触摸事件。

I want to intercept the touch events on my parent view with onInterceptTouchEvent (MotionEvent ev).

从那里我想知道为了做其他的事情而点击了哪个视图，有没有办法知道从那个收到的动议事件中点击了哪个视图？ p>

From there I want to know which view was clicked in order to do other things, is there any way to know which view was clicked from that motion event received?

推荐答案

对于任何想要知道我做了什么的人，我不能。我做了一个解决方法，只是知道我的具体视图组件是否被点击，所以我只能这样结束：

Well for anyone who wants to know what I did ... i couldn't. I did a workaround to just know if my specific view component was clicked, so I could only end with this:

   if(isPointInsideView(ev.getRawX(), ev.getRawY(), myViewComponent)){
    doSomething()
   }

和方法：

/**
 * Determines if given points are inside view
 * @param x - x coordinate of point
 * @param y - y coordinate of point
 * @param view - view object to compare
 * @return true if the points are within view bounds, false otherwise
 */
public static boolean isPointInsideView(float x, float y, View view){
    int location[] = new int[2];
    view.getLocationOnScreen(location);
    int viewX = location[0];
    int viewY = location[1];

    //point is inside view bounds
    if(( x > viewX && x < (viewX + view.getWidth())) &&
            ( y > viewY && y < (viewY + view.getHeight()))){
        return true;
    } else {
        return false;
    }
}

但是，这只适用于布局中的已知视图您可以作为参数传递，我仍然无法通过了解坐标得到点击的视图。您可以搜索布局中的所有视图。

However this only works for known views in the layout that you can pass as parameter, I still can't get the clicked view just by knowing the coordinates. You may search for all views in the layout though.

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