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android get root permission

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]
代码如下:
[java] view plain copy
  1. /** 
  2.  * 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) 
  3.  *  
  4.  * @return 应用程序是/否获取Root权限 
  5.  */  
  6. public static boolean upgradeRootPermission(String pkgCodePath) {  
  7.     Process process = null;  
  8.     DataOutputStream os = null;  
  9.     try {  
  10.         String cmd="chmod 777 " + pkgCodePath;  
  11.         process = Runtime.getRuntime().exec("su"); //切换到root帐号  
  12.         os = new DataOutputStream(process.getOutputStream());  
  13.         os.writeBytes(cmd + "\n");  
  14.         os.writeBytes("exit\n");  
  15.         os.flush();  
  16.         process.waitFor();  
  17.     } catch (Exception e) {  
  18.         return false;  
  19.     } finally {  
  20.         try {  
  21.             if (os != null) {  
  22.                 os.close();  
  23.             }  
  24.             process.destroy();  
  25.         } catch (Exception e) {  
  26.         }  
  27.     }  
  28.     return true;  
  29. }  
调用代码:
[java] view plain copy
  1. @Override  
  2. public void onCreate(Bundle savedInstanceState) {  
  3.     super.onCreate(savedInstanceState);  
  4.     setContentView(R.layout.main);  
  5.     //当前应用的代码执行目录  
  6.     upgradeRootPermission(getPackageCodePath());  
  7. }  

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