躲在偏好屏幕（机器人）

Question

我试图隐藏我的偏好设置屏幕的标题栏中的标题栏，但通常requestWindowFeature(Window.FEATURE_NO_TITLE);

不工作了，有什么建议？

我的代码是：

对于我的清单：

<activity 
      android:name=".prefs" 
      android:label="@string/app_name" 
      android:theme="@android:style/Theme.NoTitleBar"> 
      <intent-filter> 
       <action android:name="com.mittereder.rockpaper.PREFS" /> 

       <category android:name="android.intent.category.DEFAULT" /> 
      </intent-filter> 
     </activity> 

的Java：

protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 
     addPreferencesFromResource(R.xml.prefs); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 

的logcat：

08-10 00:08:07.502: E/AndroidRuntime(24457): FATAL EXCEPTION: main 
08-10 00:08:07.502: E/AndroidRuntime(24457): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mittereder.rockpaper/com.mittereder.rockpaper.prefs}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2194) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2229) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.app.ActivityThread.access$600(ActivityThread.java:139) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1261) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.os.Handler.dispatchMessage(Handler.java:99) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.os.Looper.loop(Looper.java:154) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.app.ActivityThread.main(ActivityThread.java:4945) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at java.lang.reflect.Method.invokeNative(Native Method) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at java.lang.reflect.Method.invoke(Method.java:511) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at dalvik.system.NativeStart.main(Native Method) 
08-10 00:08:07.502: E/AndroidRuntime(24457): Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content 
08-10 00:08:07.502: E/AndroidRuntime(24457): at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:228) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.app.Activity.requestWindowFeature(Activity.java:3144) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at com.mittereder.rockpaper.prefs.onCreate(prefs.java:22) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.app.Activity.performCreate(Activity.java:4531) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1071) 
08-10 00:08:07.502: E/AndroidRuntime(24457): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2150) 
08-10 00:08:07.502: E/AndroidRuntime(24457): ... 11 more 

Answer 1

试试这个：

@Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
       WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     addPreferencesFromResource(R.xml.myPreferences); 

    } 

在清单：

<activity android:name=".MyPreferencesActivity" 
        android:label="@string/app_name" 
        android:theme="@android:style/Theme.Light.NoTitleBar"> 

Answer 2

已设置的主题为android系统中的活动表现如下...

<activity android:name=".Login" android:theme="@android:style/Theme.NoTitleBar" /> 

请在编辑它之后验证您的活动标记。