How do I hide the title bar of an Android app?
A have problem I want to hide title bar from activity from activity (no xml editing) but always get error
I've tried to follow the tips in several articles:
Removing the Android title bar
How to hide the application title in android
Make a full screen activity
But this did not lead me to the expected result. What am I doing wrong?
IMG: http://i57.tinypic.com/wj6ud4.png
12-19 14:09:21.679 848-848/com.example.switchoff.test_app E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.switchoff.test_app/com.example.switchoff.test_app.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at android.support.v7.internal.app.WindowDecorActionBar.getDecorToolbar(WindowDecorActionBar.java:248)
at android.support.v7.internal.app.WindowDecorActionBar.init(WindowDecorActionBar.java:201)
at android.support.v7.internal.app.WindowDecorActionBar.<init>(WindowDecorActionBar.java:176)
at android.support.v7.app.ActionBarActivityDelegateBase.createSupportActionBar(ActionBarActivityDelegateBase.java:156)
at android.support.v7.app.ActionBarActivityDelegate.getSupportActionBar(ActionBarActivityDelegate.java:123)
at android.support.v7.app.ActionBarActivityDelegateBase.onTitleChanged(ActionBarActivityDelegateBase.java:467)
at android.support.v7.app.ActionBarActivity.onTitleChanged(ActionBarActivity.java:176)
at android.app.Activity.onPostCreate(Activity.java:1000)
at android.app.Instrumentation.callActivityOnPostCreate(Instrumentation.java:1142)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2042)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
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In action Use this.requestWindowFeature(Window.FEATURE_NO_TITLE);
before setContentView(R.layout.yourlayout);
or
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
or For ACTIONBAR
UsegetActionBar().hide();
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you don't need to add:
requestWindowFeature(Window.FEATURE_NO_TITLE);
I just added:
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
Then in my style .xml, I am below:
....
<style name="AppTheme" parent="android:Theme.Light">
<!-- Customize your theme here. -->
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
<item name="android:screenOrientation">portrait</item>
<item name="android:windowBackground">@drawable/logo</item>
</style>
this works for me, hopes it helps too ...
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