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I am trying to create a button where I can hide or show the status bar on my tablet. I've put in the onCreate getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN); getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS); and in the buttons show: WindowManager.LayoutParams attrs = getWindow().getAttributes(); attrs.flags &= ~WindowManager.LayoutParams.FLAG_FULLSCREEN; getWindow().setAttributes(attrs); hide: WindowManager.LayoutParams attrs = getWindow().getAttributes(); attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN; getWindow().setAttributes(attrs); Any hints/tipps? //edit I've looked at this hint here: http://android.serverbox.ch/?p=306 and changed my code like this: private void hideStatusBar() throws IOException, InterruptedException { Process proc = Runtime.getRuntime().exec(new String[]{"su","-c","service call activity 79 s16 com.android.systemui"}); proc.waitFor(); } private void showStatusBar() throws IOException, InterruptedException { Process proc = Runtime.getRuntime().exec(new String[]{"am","startservice","-n","com.android.systemui/.SystemUIService"}); proc.waitFor(); } So if I click on my buttons an the methods are called I can see that something is happening because the app is waiting some seconds. I also looked into LockCat and see that something is happening. show: http://pastebin.com/CidTRSTi hide: http://pastebin.com/iPS6Kgbp

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