Unable to make fullscreen app in android -

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• fullscreen activity in android? 19 answers

i not able make fullscreen android app. though mainactivity not show notification bar, keeps area of notification bar empty... padded white row height of notification bar. appreciated. here manifest file.

<application    android:allowbackup="true"    ...    android:theme="@style/apptheme">     <activity         android:name=".mainactivity"         android:label="@string/app_name"         android:screenorientation="landscape"         android:theme="@style/apptheme.noactionbar">         <intent-filter>             <action android:name="android.intent.action.main" />             <category android:name="android.intent.category.launcher" />         </intent-filter>     </activity>     <activity         android:name=".loginactivity"         android:screenorientation="landscape"         android:label="@string/title_activity_login"></activity> </application> 

if make modification

<activity android:name=".activityname"     android:label="@string/app_name"     android:theme="@android:style/theme.notitlebar.fullscreen"/> 

then crashes app, though app gets compiled.

update more detail. error when app crashes is:

**java.lang.runtimeexception: unable start activity componentinfo{com.example.vibha.digits42c/com.example.vibha.digits42c.mainactivity}: java.lang.illegalstateexception: need use theme.appcompat theme (or descendant) activity.**                                                                                @ android.app.activitythread.performlaunchactivity(activitythread.java:2416)                                                                                @ android.app.activitythread.handlelaunchactivity(activitythread.java:2476)                                                                                @ android.app.activitythread.-wrap11(activitythread.java)                                                                                @ android.app.activitythread$h.handlemessage(activitythread.java:1344)                                                                                @ android.os.handler.dispatchmessage(handler.java:102)                                                                                @ android.os.looper.loop(looper.java:148)                                                                                @ android.app.activitythread.main(activitythread.java:5417)                                                                                @ java.lang.reflect.method.invoke(native method)                                                                                @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:726)                                                                                @ com.android.internal.os.zygoteinit.main(zygoteinit.java:616)                                                                             **caused by: java.lang.illegalstateexception: need use theme.appcompat theme (or descendant) activity.**                                                                                @ android.support.v7.app.appcompatdelegateimplv7.createsubdecor(appcompatdelegateimplv7.java:310)                                                                                @ android.support.v7.app.appcompatdelegateimplv7.ensuresubdecor(appcompatdelegateimplv7.java:279)                                                                                @ android.support.v7.app.appcompatdelegateimplv7.setcontentview(appcompatdelegateimplv7.java:253)                                                                                @ android.support.v7.app.appcompatactivity.setcontentview(appcompatactivity.java:109)                                                                                @ com.example.vib.digits42c.mainactivity.oncreate(mainactivity.java:45) 

now @ last line @ mainactivity.java:45, code is

setcontentview(r.layout.activity_main); 

i targeting @ nexus 5, android 6.0.1

instead of

  android:theme="@style/apptheme.noactionbar">           

try use:

 android:theme="@android:style/theme.notitlebar.fullscreen"> 

hope work

edit: java class extends activity, should appcompatactivity change it