Android using Super User Permissions ? allowing access

Question

im trying to find the method behind having superuser access on android devices. basically i want my app to be able to remove system files, and so asking the user if its ok after the app is launched like most other apps, and then what code exactly am i looking to use to perform these sorts of actions? cant find much on google

thanks in advance!

Answer 1

If the device is rooted, you can use the following code to gain access to a root shell:

    try
    {
        Process process = Runtime.getRuntime().exec("su");
        DataOutputStream outputStream = new DataOutputStream(process.getOutputStream()); 
        DataInputStream inputStream = new DataInputStream(process.getInputStream());

        outputStream.writeBytes(command + "\n");
        outputStream.flush();

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

Where "command" is the command that you want to execute.

Answer 2

If I'm getting it right you want to grant your application root privileges. This is not possible with the standard Android image which is installed on the devices. The su command does not support changing to root.

You can however load a customized rooted ROM on your device other than that I'm afraid there is no solution.