Execute A Shell Command Programmatically: Why It Doesn't Work?

I'm trying to programmatically execute the new command 'ScreenRecorder' kitkat. I just tried this: suProcess = Runtime.getRuntime().exec('su'); process = Runtime.getRuntime().exec(

Solution 1:

Try this

public static void ScreenRecord() throws Exception
    {
        try
        {
            Process su = Runtime.getRuntime().exec("su");
            DataOutputStream outputStream = new DataOutputStream(su.getOutputStream());

            outputStream.writeBytes("screenrecord --time-limit 10 /sdcard/MyVideo.mp4\n");
            outputStream.flush();

            outputStream.writeBytes("exit\n");
            outputStream.flush();
            su.waitFor();
        }
        catch(IOException e)
        {
            throw new Exception(e);
        }catch(InterruptedException e){
            throw new Exception(e);
        }
    }

Solution 2:

It doesn't work because it's an emulator and not a normal device. I think this article could help in this case: http://russelldavis.blogspot.com/2011/01/rooting-android-emulator.html