Android determines whether the mobile phone is root

Android determines whether the mobile phone is root

How to determine whether the mobile phone is root. If the app requires the root permission for some special features, you need to determine whether the app is root. For example, apps are automatically installed after being downloaded in some markets.

/** * @author Kevin Kowalewski *  */public class Root {    private static String LOG_TAG = Root.class.getName();    public boolean isDeviceRooted() {        if (checkRootMethod1()){return true;}        if (checkRootMethod2()){return true;}        if (checkRootMethod3()){return true;}        return false;    }    public boolean checkRootMethod1(){        String buildTags = android.os.Build.TAGS;        if (buildTags != null && buildTags.contains("test-keys")) {            return true;        }        return false;    }    public boolean checkRootMethod2(){        try {            File file = new File("/system/app/Superuser.apk");            if (file.exists()) {                return true;            }        } catch (Exception e) { }        return false;    }    public boolean checkRootMethod3() {        if (new ExecShell().executeCommand(SHELL_CMD.check_su_binary) != null){            return true;        }else{            return false;        }    }}/** * @author Kevin Kowalewski * */public class ExecShell {    private static String LOG_TAG = ExecShell.class.getName();    public static enum SHELL_CMD {        check_su_binary(new String[] {"/system/xbin/which","su"}),        ;        String[] command;        SHELL_CMD(String[] command){            this.command = command;        }    }    public ArrayList
 
   executeCommand(SHELL_CMD shellCmd){        String line = null;        ArrayList
  
    fullResponse = new ArrayList
   
    ();        Process localProcess = null;        try {            localProcess = Runtime.getRuntime().exec(shellCmd.command);        } catch (Exception e) {            return null;            //e.printStackTrace();        }        BufferedWriter out = new BufferedWriter(new OutputStreamWriter(localProcess.getOutputStream()));        BufferedReader in = new BufferedReader(new InputStreamReader(localProcess.getInputStream()));        try {            while ((line = in.readLine()) != null) {                Log.d(LOG_TAG, "--> Line received: " + line);                fullResponse.add(line);            }        } catch (Exception e) {            e.printStackTrace();        }        Log.d(LOG_TAG, "--> Full response was: " + fullResponse);        return fullResponse;    }}
   
  
 

The Code comes from stackoverflow and pays tribute to the author.

Method 2:

The RootTools library offers simple methods to check for root:

An open source project: http://code.google.com/p/roottools/

RootTools. isRootAvailable () determines whether it is root

If RootTools. isAccessGiven () returns true, the mobile phone is already root and the app is also granted root permissions.

In addition, according to a poster of the post

String commandToExecute = "su";executeShellCommand(commandToExecute);private boolean executeShellCommand(String command){    Process process = null;                try{        process = Runtime.getRuntime().exec(command);        return true;    } catch (Exception e) {        return false;    } finally{        if(process != null){            try{                process.destroy();            }catch (Exception e) {            }        }    }}

This will cause very serious performance problems and slow down the mobile phone system. When the application is started multiple times, many dead processes will be created to consume memory.
Reference http://stackoverflow.com/questions/1101380/determine-if-running-on-a-rooted-device

To sum up; I have no advice for you to determine if device is rooted or not. But if I were you I wocould not use runtime.getruntime(cmd.exe c ().

By the way; RootTools. isRootAvailable () causes same problem.
The RootTools library offers simple methods to check for root: