使用TOP和BOTTOM重力时,Android DrawerLayout失败

Question

我刚刚使用最近包含在支持库中的新DrawerLayout.我实现了一个简单的例子,有多个抽屉,而我使用START和END作为重量,它都像魅力一样,但当试图添加一个TOP或BOTTOM重力的抽屉时,它会崩溃.

是否可以将它用于从顶部和/或底部滑动抽屉？

下面是我的活动的完整代码和处于工作状态的xml布局; 如果我试着改变这个:

<ListView android:id="@+id/right_drawer"
                  android:layout_width="240dp"
                  android:layout_height="match_parent"
                  android:layout_gravity="end"
                  android:choiceMode="singleChoice"
                  android:divider="@android:color/transparent"
                  android:dividerHeight="0dp"
                  android:background="#007799"/>

到这里(注意layout_width,layout_height和layout_gravity的变化):

<ListView android:id="@+id/right_drawer"
                  android:layout_width="match_parent"
                  android:layout_height="300dp"
                  android:layout_gravity="bottom"
                  android:choiceMode="singleChoice"
                  android:divider="@android:color/transparent"
                  android:dividerHeight="0dp"
                  android:background="#007799"/>

和行:

this.drawer.openDrawer(GravityCompat.START);

信息这一个:

this.drawer.openDrawer(Gravity.BOTTOM);

是我收到以下错误:

05-16 05:22:33.981    1503-1503/es.luixal.test                 E/AndroidRuntime: FATAL EXCEPTION: main
        java.lang.RuntimeException: Unable to start activity ComponentInfo{es.luixal.test/es.luixal.test.MainActivity}: java.lang.IllegalArgumentException: View android.widget.RelativeLayout{42664c80 V.E..... ......I. 0,0-0,0} is not a sliding drawer
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
        at android.app.ActivityThread.access$600(ActivityThread.java:141)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:5039)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
        at dalvik.system.NativeStart.main(Native Method)
        Caused by: java.lang.IllegalArgumentException: View android.widget.RelativeLayout{42664c80 V.E..... ......I. 0,0-0,0} is not a sliding drawer
        at android.support.v4.widget.DrawerLayout.openDrawer(DrawerLayout.java:970)
        at android.support.v4.widget.DrawerLayout.openDrawer(DrawerLayout.java:1003)
        at es.luixal.test.MainActivity.onCreate(MainActivity.java:30)
        at android.app.Activity.performCreate(Activity.java:5104)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
        ... 11 more

任何线索为什么我不能使用这个其他的重力？

谢谢!

MainActivity.java

package es.luixal.test;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends Activity {

private DrawerLayout drawer;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    // filling list items:
    ListView listView = (ListView)findViewById(R.id.left_drawer);
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new String[]{
            "MenuItem 1",
            "MenuItem 2",
            "MenuItem 3"
    });
    listView.setAdapter(adapter);
    //
    this.drawer = (DrawerLayout)findViewById(R.id.drawer_layout);
    this.drawer.openDrawer(GravityCompat.START);
}

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    protected void onStart() {
        super.onStart();
    }
}

activity_main.xml中

    <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

        <TextView android:id="@+id/text"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
                  android:text="Hi!"
                />
    </RelativeLayout>

    <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="#44aa00"/>

    <ListView android:id="@+id/right_drawer"
              android:layout_width="240dp"
              android:layout_height="match_parent"
              android:layout_gravity="end"
              android:choiceMode="singleChoice"
              android:divider="@android:color/transparent"
              android:dividerHeight="0dp"
              android:background="#007799"/>

</android.support.v4.widget.DrawerLayout>

Answer 1

我们最近在Umano App中实现了这个功能,并开放了它:

https://github.com/umano/AndroidSlidingUpPanel

Answer 2

DrawerLayout没有官方参考使用"Bottom"或"Top"Gravity - Source

public void openDrawer(int gravity)

通过将其设置为视图以外的方式打开指定的抽屉.

参数重力

用于移动左抽屉的Gravity.LEFT或用于右移的Gravity.RIGHT.也可以使用GravityCompat.START或GravityCompat.END.

如果要使用其他视觉效果 - 请使用其他库