Android: show/hide status bar/power bar

Question

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

Answer 1

Do you have the fullscreen theme set in the manifest?

android:theme="@android:style/Theme.NoTitleBar.Fullscreen" 

I don't think you'll be able to go fullscreen without this.

I would use the following to add and remove the fullscreen flag:

// Hide status bar getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN); // Show status bar getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);