Using ActionBarCompat and requestWindowFeature

Question

so far I have not had any more problems transitioning from ActionBarSherlock to ActionBarCompat. On my Nexus 4, it works very well. When I started testing my old Nexus One running 2.3.6, I ran into a problem when turning the device. I ask the Window function to show intermediate progress in the ActionBar:

@Override protected void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(android.view.Window.FEATURE_PROGRESS); requestWindowFeature(android.view.Window.FEATURE_INDETERMINATE_PROGRESS); setupActionBar(getSupportActionBar()); } 

It works very well on Bean Jelly.

In 2.3.6, this stack trace is obtained:

 08-12 13:34:09.242: E/AndroidRuntime(4602): FATAL EXCEPTION: main 08-12 13:34:09.242: E/AndroidRuntime(4602): java.lang.RuntimeException: Unable to start activity ComponentInfo{net.app.packagename/net.app.fragment.CustomActivity}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:2832) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.app.ActivityThread.access$1600(ActivityThread.java:117) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.os.Handler.dispatchMessage(Handler.java:99) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.os.Looper.loop(Looper.java:130) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.app.ActivityThread.main(ActivityThread.java:3683) 08-12 13:34:09.242: E/AndroidRuntime(4602): at java.lang.reflect.Method.invokeNative(Native Method) 08-12 13:34:09.242: E/AndroidRuntime(4602): at java.lang.reflect.Method.invoke(Method.java:507) 08-12 13:34:09.242: E/AndroidRuntime(4602): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 08-12 13:34:09.242: E/AndroidRuntime(4602): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 08-12 13:34:09.242: E/AndroidRuntime(4602): at dalvik.system.NativeStart.main(Native Method) 08-12 13:34:09.242: E/AndroidRuntime(4602): Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content 08-12 13:34:09.242: E/AndroidRuntime(4602): at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:181) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.app.Activity.requestWindowFeature(Activity.java:2729) 08-12 13:34:09.242: E/AndroidRuntime(4602): at net.app.fragment.BaseFragmentActivity.onCreate(BaseFragmentActivity.java:50) 08-12 13:34:09.242: E/AndroidRuntime(4602): at net.app.fragment.CustomActivity.onCreate(CustomActivity.java:55) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 08-12 13:34:09.242: E/AndroidRuntime(4602): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611) 08-12 13:34:09.242: E/AndroidRuntime(4602): ... 12 more 08-12 13:34:12.092: I/Process(4602): Sending signal. PID: 4602 SIG: 9 

Does anyone know how to fix this?

considers

Answer 1

Call supportRequestWindowFeature(Window.FEATURE_...) .

See http://android-developers.blogspot.com/2013/08/actionbarcompat-and-io-2013-app-source.html

Answer 2

Use supportRequestWindowFeature(WindowCompat.FEATURE_xxx)

i.e. You also need to use WindowCompat.FEATURE_xxx instead of Window.FEATURE_xxx for backward compatibility.

Answer 3

For those who do not call requestWindowFeature() but still get an exception, try this workaround:

 @Override protected void onCreate(Bundle savedInstanceState) { try { super.onCreate(savedInstanceState); } catch (Throwable e) { //dummy workaround } setContentView(getLayoutResId()); 

see https://code.google.com/p/android/issues/detail?id=60841

Answer 4

The error log makes it clear that you must call the requestFeature () function before adding content. So you need to call "super.onCreate (savedInstanceState)"; after calling 'requestWindowFeature'. And there is no need to refer to supportRequestWindowFeature (Window.FEATURE _...) as mentioned above. See working code below.

  @Override public void onCreate(Bundle savedInstanceState) { requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); requestWindowFeature(Window.FEATURE_PROGRESS); super.onCreate(savedInstanceState);