requestFeature() must be called before adding content error on super.onCreate

Question

I have an abstract class extending `ActionBarActivity`. In the `onCreate`, I have: ``` @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); supportRequestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); ... } ``` The app crashes due to the requestFeature() before content error, specifically on the line `super.onCreate(savedInstanceState)`. After reading some of the similar posts, I came up with this solution: ``` @Override protected void onCreate(Bundle savedInstanceState) { requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); super.onCreate(savedInstanceState); ... } ``` My question is: Why does it crash on the super call? Also, I'm not `settingContentView` in the classes that extend this class until AFTER I call `super.onCreate`. It's still occasionally crashing. ``` java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/com.myapp.cycle.Cycle}: android.util.AndroidRuntimeException: requestFeature() must…

Accepted Answer

Because `android.support.v7.app.ActionBarActivity` alters the window content by adding an ActionBar. Please take a look at the code starting with

```
@Override
protected void onCreate(Bundle savedInstanceState) {
    mImpl = ActionBarActivityDelegate.createDelegate(this);
    super.onCreate(savedInstanceState);
    mImpl.onCreate(savedInstanceState);
}
```

and on at https://android.googlesource.com/platform/frameworks/support/+/master/v7/appcompat/src/android/support/v7/app/ActionBarActivity.java for details. And what the `FEATURE_INDETERMINATE_PROGRESS` looks like depends on whether an ActionBar is present or not. So that needs to be set before the super call.

requestFeature() must be called before adding content error on super.onCreate

Solution

Problem