获取手机权限，如果已经root了

/** * 获得root权限 *  * @param cmd * @return */public boolean RootCmd(String cmd) {Process process = null;DataOutputStream os = null;try {process = Runtime.getRuntime().exec("sudo su");os = new DataOutputStream(process.getOutputStream());os.writeBytes(cmd + "\n");os.writeBytes("exit\n");os.flush();process.waitFor();} catch (Exception e) {return false;} finally {try {if (os != null) {os.close();}process.destroy();} catch (Exception e) {}}return true;}