Hide System Bar in Jelly Bean Tablet (Rooted)

android, root

Solution

The process id for the `SystemUI` class changed from 79 to 42 when ICS was introduced. The code below works for any version of Android that your app might be running on.

//HIDE TOOLBAR
try{
    //REQUIRES ROOT
    Build.VERSION_CODES vc = new Build.VERSION_CODES();
    Build.VERSION vr = new Build.VERSION();
    String ProcID = "79"; //HONEYCOMB AND OLDER

    //v.RELEASE  //4.0.3
    if(vr.SDK_INT >= vc.ICE_CREAM_SANDWICH){
        ProcID = "42"; //ICS AND NEWER
    }

    //REQUIRES ROOT
    Process proc = Runtime.getRuntime().exec(new String[]{"su","-c","service call activity "+ ProcID +" s16 com.android.systemui"}); //WAS 79
    proc.waitFor();

}catch(Exception ex){
    Toast.makeText(getApplicationContext(), ex.getMessage(), Toast.LENGTH_LONG).show();
}

Problem

I have an Android Jelly Bean Tablet which has been rooted and trying to run an application which has the code to hide the system bar but it's not getting hidden can any one help me out on this. Getting output in terminal : `Result Parcel(00000000 '....')` ``` public class MainActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button hide=(Button)findViewById(R.id.button1); Button show=(Button)findViewById(R.id.button2); hide.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Log.v("ds", "hideSystembar"); try { Process proc = Runtime.getRuntime().exec(new String[]{ "su","-c","service call activity 79 s16 com.android.systemui"}); proc.waitFor(); } catch (Exception e) { e.printStackTrace(); } } }); show.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Log.v("f", "showSystembar"); try { Process proc = Runtime.getRuntime().exec(new String[]{ "am","startservice","-n","com.android.systemui/.SystemUIService"}); proc.waitFor(); } catch (Exception e) { e.printStackTrace(); } } }); } } ``` Though I am getting toast of permission granted : Super User Log Screen Shot:

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