为填充按钮的衬垫布局添加触摸监听器 [英] adding touch listener for liner layout filled with buttons

问题描述

我在线性布局中添加了一个触摸事件来响应滑动手势，效果很好.但是，当我向布局添加按钮时，父班轮布局被忽略.我应该如何防止这种情况发生?

I added a touch event to a linear layout to respond to swipe gestures, and it works well. However, when i add buttons to the layout, the parent liner layout is ignored. How should I prevent this from happening?

LinearLayout ln2 = (LinearLayout) findViewById(R.id.fr2);
ln2.setOnTouchListener(swipe);

我如何使用onInterceptTouch?

推荐答案

您应该创建自己的布局并覆盖布局的 onInterceptTouchEvent(MotionEvent ev) 方法.

You should create your own layout and override onInterceptTouchEvent(MotionEvent ev) method of your layout.

例如，我创建了自己的布局，它扩展了 RelativeLayout

For Example I created my own layout which extends RelativeLayout

       @Override
       public boolean onInterceptTouchEvent(MotionEvent ev) {
         return true; // With this i tell my layout to consume all the touch events from its childs
      }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
        // Log.d(TAG, String.format("ACTION_DOWN | x:%s y:%s", 
            break;
        case MotionEvent.ACTION_MOVE:
        //Log.d(TAG, String.format("ACTION_MOVE | x:%s y:%s", 
            break;
        case MotionEvent.ACTION_UP:
            break;
        }
        return true;
    }

当我在布局中放置一个按钮时，即使我点击了那个按钮，我的布局也会消耗所有的 touchEvent，因为 onInterceptTouchEvent 总是返回 true.

And when i put a button to my layout, even i clicked that button, My Layout consumes all the touchEvent because of the onInterceptTouchEvent always returns true.

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