How to disable status bar / notification bar on android programmatically?

i create a lockscreen application.. this application is triggered by SMS.. when a SMS containing command was received, it will displ开发者_如何转开发ay a lock screen activity.

my lockscreen activity is using TYPE_KEYGUARD for disabling a home screen button. When device screen turn off and then i turn it on again, my problem is status bar / notification bar still appear on my screen. this is a problem because the user still can access some program through status bar / notification bar even the device is being locked. so i want to dissapear this status bar / notification bar so that the user (theft) can't access that device anymore.. Please help me to solve this..

I think what you're trying to do is programmatically set an activity as fullscreen. If so, consider the following:

requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                     WindowManager.LayoutParams.FLAG_FULLSCREEN);

Source: http://www.androidsnippets.com/how-to-make-an-activity-fullscreen

  public void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);
      getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
      getWindow().requestFeature(Window.FEATURE_NO_TITLE);
}

requestWindowFeature(Window.FEATURE_NO_TITLE);

only disables the activity's title bar, not the notification bar at the top.

Use this theme in android manifest for your activity :

"Theme.NoTitleBar.Fullscreen"

did work for me.

It hides the notification bar.

On Android 4.0 and lower

Option 1:

<application
    ...
    android:theme="@android:style/Theme.Holo.NoActionBar.Fullscreen" >
    ...
</application>

Option 2:

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // If the Android version is lower than Jellybean, use this call to hide
        // the status bar.
        if (Build.VERSION.SDK_INT < 16) {
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                    WindowManager.LayoutParams.FLAG_FULLSCREEN);
        }
        setContentView(R.layout.activity_main);
    }
    ...
}

on Android 4.1 and Higher

View decorView = getWindow().getDecorView();
// Hide the status bar.
int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);
// Remember that you should never show the action bar if the
// status bar is hidden, so hide that too if necessary.
ActionBar actionBar = getActionBar();
actionBar.hide();

And for Android 4.6(Api 19) and higher use the Immersive Full-Screen Mode

Reference from Google