如何使用返回按钮关闭滑动抽屉 - android

Question

i try to close the sliding drawer when i click on the return back key but its not working here is the code i used

@Override
public void onBackPressed() {
   Log.d("onBackPressed Called", FROM_SETTINGS_KEY);
      slidingDrawer.close();

}

the xml :

<SlidingDrawer
    android:id="@+id/slidingDrawer1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="197dp"
    android:content="@+id/content"
    android:handle="@+id/handle" >

    <Button
        android:id="@+id/handle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Handle" />

    <LinearLayout
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </LinearLayout>
</SlidingDrawer>

so how can i make the return back key close this sliding drawer ?

Answer 1

You're overriding Activity.onKeyDown , which Activity already overrides when implementing Activity.onBackPressed , then returning false for KeyEvent.KEYCODE_BACK which indicates that you have not handled this event and it should continue to be propagated.

To fix your problem stop overriding Activity.onKeyDown . Also, change your Activity.onBackPressed to call super if the SlidingDrawer isn't opened.

private SlidingDrawer slidingDrawer;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.your_layout);

    slidingDrawer = (SlidingDrawer) findViewById(R.id.slidingDrawer1);
}

@Override
public void onBackPressed() {
    if (slidingDrawer.isOpened()) {
        slidingDrawer.close();
    } else {
        super.onBackPressed();
    }
}