Android应用请求获取Root权限

/**
 * 应用程序运行命令获取 Root权限，设备必须已破解(获得ROOT权限)
 * 
 * @return 应用程序是/否获取Root权限
 */
public static boolean upgradeRootPermission(String pkgCodePath) {
    Process process = null;
    DataOutputStream os = null;
    try {
        String cmd="chmod 777 " + pkgCodePath;
        process = Runtime.getRuntime().exec("su"); //切换到root帐号
        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;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    //当前应用的代码执行目录
    upgradeRootPermission(getPackageCodePath());
}