Executes the command in a shell with root privileges. - Android Android OS

Android examples for Android OS:Root

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Description

Executes the command in a shell with root privileges.

Demo Code


//package com.java2s;
import android.util.Log;

import java.io.DataOutputStream;
import java.io.IOException;

public class Main {
    /**/* www  .ja  va2  s  .c  om*/
     * Executes the command in a shell with root privileges.
     * Note: When using a few commands in rapidly use (@code executeMultiple(ArrayList<String> commands))
     *  because it uses only one root request!
     * @param command the command to execute
     * @return true if the execution was successful, otherwise false
     */
    public static boolean execute(String command) {
        boolean retval = false;

        try {
            if (null != command && !"".equals(command)) {
                Process suProcess = Runtime.getRuntime().exec("su");

                DataOutputStream os = new DataOutputStream(
                        suProcess.getOutputStream());

                // Execute commands that require root access
                os.writeBytes(command + "\n");
                os.flush();

                os.writeBytes("exit\n");
                os.flush();

                try {
                    int suProcessRetval = suProcess.waitFor();
                    if (255 != suProcessRetval) {
                        // Root access granted
                        retval = true;
                    } else {
                        // Root access denied
                        retval = false;
                    }
                } catch (Exception ex) {
                    Log.e("ROOT", "Error executing root action", ex);
                }
            }
        } catch (IOException ex) {
            Log.w("ROOT", "Can't get root access", ex);
        } catch (SecurityException ex) {
            Log.w("ROOT", "Can't get root access", ex);
        } catch (Exception ex) {
            Log.w("ROOT", "Error executing internal operation", ex);
        }

        return retval;
    }
}

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