android标题栏后退键,Android - 标题栏中的后退按钮

小智..

9

如果您的活动确实扩展了活动

public class YourActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_xxx);

getActionBar().setHomeButtonEnabled(true);

[...]

}

[...]

}

如果您的操作扩展了AppCompatActivity

public class YourActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_xxx);

getSupportActionBar().setHomeButtonEnabled(true);

[...]

}

[...]

}

没什么可做的,请参阅添加操作

[可选]要明确定义父活动,请修改您的Manifest.xml,如下所示:

...

android:name="com.example.myfirstapp.MainActivity" ...>

...

android:name="com.example.myfirstapp.YourActivity "

android:label="@string/title_activity_display_message"

android:parentActivityName="com.example.myfirstapp.MainActivity" >

android:name="android.support.PARENT_ACTIVITY"

android:value="com.example.myfirstapp.MainActivity" />