java.lang.IllegalStateException: ActionBarImpl can only be used with a compatible window decor layout

Within the last days I do see increasing error messages that sound identical. I don't use tablets ActionBar - I'm developing for phones only.

What's the reason for these crashes?

Here's a complete trace:

java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=8995, result=0, data=null} to activity {xy.yyyy.app.android/xy.yyyy.app.Main}: java.lang.IllegalStateException: ActionBarImpl can only be used with a compatible window decor layout

at android.app.ActivityThread.deliverResults(ActivityThread.java:2818)

at android.app.ActivityThread.handleSendResult(ActivityThread.java:2861)

at android.app.ActivityThread.access$1000(ActivityThread.java:122)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1054)

at android.os.Handler.dispatchMessage(Handler.java:99)

at android.os.Looper.loop(Looper.java:132)

at android.app.ActivityThread.main(ActivityThread.java:4123)

at java.lang.reflect.Method.invokeNative(Native Method)

at java.lang.reflect.Method.invoke(Method.java:491)

at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)

at dalvik.system.NativeStart.main(Native Method)

Caused by: java.lang.IllegalStateException: ActionBarImpl can only be used with a compatible window decor layout

at com.android.internal.app.ActionBarImpl.init(ActionBarImpl.java:214)

at com.android.internal.app.ActionBarImpl.<init>(ActionBarImpl.java:200)

at android.app.Dialog.show(Dialog.java:255)

at xy.yyyy.app.MyProgressDialog.show(MyProgressDialog.java:33)

at xy.yyyy.app.MyProgressDialog.show(MyProgressDialog.java:23)

at xy.yyyy.app.Main$FetchTask.onPreExecute(Main.java:19)

at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:549)

at android.os.AsyncTask.execute(AsyncTask.java:499)

at xy.yyyy.app.Main.onActivityResult(Main.java:60)

at android.app.Activity.dispatchActivityResult(Activity.java:4581)

at android.app.ActivityThread.deliverResults(ActivityThread.java:2814)

... 11 more

This is a typical AsyncTask that I use from within an activity to start a lengthy task with a ProgressDialog:

private class DeleteTask extends AsyncTask<Void, Void, Boolean> {



  @Override

  protected void onPreExecute () {

    if (!isRunning) {

      progressDialog = MyProgressDialog.show(MyActivity.this,

                                             null,

                                             null,

                                             true,

                                             false);

    }

  }



  @Override

  protected Boolean doInBackground(final Void... strings) {

    Boolean rc = false;



    if (!isRunning) {

      isRunning = true;



      processDelete();

    }



    return rc;

  }



  @Override

  protected void onPostExecute(final Boolean result) {

    if (progressDialog != null) {

      progressDialog.cancel();

    }

    progressDialog = null;



    setResult(RESULT_OK);

    finish();



    isRunning = false;

  }

}

Here's my MyProgressDialog class:

public class MyProgressDialog extends Dialog {



  public MyProgressDialog(final Context context) {

    super(context, R.style.MyProgressDialog);

  }



  public static MyProgressDialog show(final Context context, final CharSequence title, final CharSequence message) {

    return show(context, title, message, false);

  }



  public static MyProgressDialog show(final Context context, final CharSequence title, final CharSequence message, final boolean indeterminate) {

    return show(context, title, message, indeterminate, false, null);

  }



  public static MyProgressDialog show(final Context context, final CharSequence title, final CharSequence message, final boolean indeterminate, final boolean cancelable) {

    return show(context, title, message, indeterminate, cancelable, null);

  }



  public static MyProgressDialog show(final Context context, final CharSequence title, final CharSequence message, final boolean indeterminate, final boolean cancelable, final OnCancelListener onCancelListener) {

    MyProgressDialog dialog = new MyProgressDialog(context);

    dialog.setCancelable(cancelable);

    dialog.setOnCancelListener(onCancelListener);

    dialog.setTitle(title);



    dialog.addContentView(new ProgressBar(context), new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

    dialog.show();



  return dialog;

  }

}

Many thanks in advance.

EDIT:

Here's the used style:

<style name="MyProgressDialog">

    <item name="android:background">@android:color/transparent</item>

    <item name="android:backgroundDimEnabled">false</item>

    <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>

    <item name="android:windowBackground">@android:color/transparent</item>

    <item name="android:windowContentOverlay">@null</item>

    <item name="android:windowFrame">@null</item>

    <item name="android:windowIsFloating">true</item>

    <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item>

    <item name="android:windowTitleStyle">@null</item>

</style>

Here's a screenshot of that ProgressDialog:

SOLUTION:

Had to add this to the style:

parent="@android:style/Theme.Dialog"

Source: Tips4all, CCNA FINAL EXAM