Android - OnTouchListener 不工作

Question

您好，我已经构建了一个具有根 relativelayout 视图的应用程序。我试图设置一个触摸监听器，以便在用户触摸屏幕时返回，但它似乎没有触发，我不知道我哪里出错了。我已经在网上搜索并查看了，但从我所看到的情况来看，每个人似乎都使用与我相同的方法 - 我的方法不起作用。
谁能明白为什么？

  RelativeLayout relativeLayout;

  relativeLayout = (RelativeLayout) findViewById(R.id.relativeLayout);

 //relative layout on touch listener
    relativeLayout.setOnTouchListener(new View.OnTouchListener(){

        @Override
        public boolean onTouch(View v, MotionEvent event) {

            //down - finger on screen
            if (event.getAction()== MotionEvent.ACTION_DOWN) {

                //store center of screen lat lon
                centerOfScreenLatLng = getScreenCenterLatLon();

                toastMsg = "down";
                toastShort();

                return true;
            }

            //up - finger off screen
            else if (event.getAction() == MotionEvent.ACTION_UP) {

                toastMsg = "up";
                toastShort();

                //get center of screen lat lon
                LatLng centerPoint = getScreenCenterLatLon();

                //if not equal then screen has been moved
                if (centerPoint != centerOfScreenLatLng){

                    //check which markers are currently in view
                    checkMarkersInView();
                }

                return true;
            }

            return false;
        }

    });


<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/relativeLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/grey_1"
    tools:context=".MainActivity"
    android:clickable="true"
    android:focusable="true" />

Answer 1

把这个为relativelayout的每个孩子放在xml文件中：

android:clickable="false"
android:focusable="false"