应用获取Root权限的原理:让应用的代码执行目录获取最高权限。在Linux中通过chmod 777 [代码执行目录]
/** * 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 + " "); os.writeBytes("exit "); os.flush(); process.waitFor(); } catch (Exception e) { return false; } finally { try { if (os != null) { os.close(); } process.destroy(); } catch (Exception e) { } } return true; }
调用
@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()); }
转载自:http://blog.csdn.net/zhufuing/article/details/7875216