在Android应用程序使用DrawerLayout手势时不工作 [英] Gestures not working when using DrawerLayout in Android app

问题描述

我有一个单一的活动Android应用程序。本次活动采用这种布局：

I have an Android app with a single Activity. This activity uses this layout:

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!-- The main content view -->
    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <!-- The navigation drawer -->
    <ListView android:id="@+id/left_drawer"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp"
        android:background="#111"/>
</android.support.v4.widget.DrawerLayout>

然后，在我的源代码我在构造函数中定义了两个手势探测器：

Then, in my source I have two gesture detectors defined in the constructor:

mDetector = new GestureDetectorCompat(this, new CustomGestureListener());
mScaleDetector = new ScaleGestureDetector(this, new CustomScaleGestureListener());

和我重写的onTouchEvent是这样的：

And I'm overriding onTouchEvent this way:

@Override
public boolean onTouchEvent(MotionEvent event) {
    if (event.getPointerCount() > 1) {
        this.mScaleDetector.onTouchEvent(event);
    } else {
        this.mDetector.onTouchEvent(event);
    }
    return super.onTouchEvent(event);
}

我的问题是，手势检测不到（虽然我可以用滑动手势打开抽屉）。如果余替换为drawerlayout，例如，一个线性布局不会发生这种问题，所以起因是导航抽屉。我究竟做错了什么？

My problem is that gestures are not detected (although I can open the drawer with a swipe gesture). This problem doesn't occur if I replace the drawerlayout with, for example, a linear layout, so the cause is the navigation drawer. What am I doing wrong?

推荐答案

您必须设置一个TouchListener为你的抽屉布局。 例如：/

you have to set a TouchListener for your drawer layout. eg/

gestureDetector = new GestureDetector(this, new CustomGestureListener());

    mDrawerLayout.setOnTouchListener(new View.OnTouchListener() {
        public boolean onTouch(View v, MotionEvent event) {
            if (gestureDetector.onTouchEvent(event)) {
                return true;
            }
            return false;
        }
    });

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