Restart android phone (emulator)?

Question

I want to restart the mobile when I press a button.For that i wrote these..

        PowerManager pm;
        public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.main);        
           pm = (PowerManager) getSystemService(Context.POWER_SERVICE);        
           Button test = (Button) findViewById(R.id.button1);

           test.setOnClickListener(new OnClickListener() {          
        public void onClick(View v) {

            try {
                Process proc = Runtime.getRuntime().exec(new String[] {"su", "-c", "reboot" });

                            int result = proc.waitFor();
                Toast.makeText(ForTestActivity.this, "INt:"+result, Toast.LENGTH_SHORT).show();


            } catch (Exception ex) {
                Log.i("XXXXXXXXXXXX", "Could not reboot", ex);
            }

        }
    });

}

This is not working in emulator.I'm using android2.3.3 for develop this application. It does not give any errors and nothing happened after I press the button. The toast was displaying result as 1.

After that I tried this code also..

     Process p = Runtime.getRuntime().exec("su");
                DataOutputStream os = new DataOutputStream(p.getOutputStream());            
                os.writeBytes("reboot"+"\n");                             
                os.writeBytes("exit\n");  
                os.flush();

Same result.I added necessary permissions also.Is someone having any idea ?

[Somehow I want to restart (or Shutdown) the phone after press a button.]

I think the device needs to have root rights... – Jeje Doudou May 25 '12 at 10:37 — Jeje Doudou, May 25 '12 at 10:37

score 1 · Answer 1 · edited May 23 '17 at 10:09

1

A similar question was asked and answered here. You can't reboot an unrooted phone until you have the firmware-key to sign it.

edited May 23 '17 at 10:09

Community

1
1

answered May 25 '12 at 10:58

Ponmalar

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kajman · Accepted Answer · 2012-05-25T14:33:40.003

Have you tried the above command without the "su -c"?

When I type "adb shell reboot" my phone reboots (but my phone is rooted which is needed in this case) so I think effect should be similar if you just execute "reboot" from code. I think "su -c" is unnecessary as you have root rights already on rooted phone (IIRC emulator is rooted by default).

As other have mentioned, this will not work on unrooted phone.

Restart android phone (emulator)?

2 Answers2