Android Open Source - USB-OTG-Manager Root

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Back to project page USB-OTG-Manager.

License

The source code is released under:

Copyright (c) 2010, Shaka Huang All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Re...

Java Source Code

package com.corner23.android.usb_otg_manager;
//from w w w .j  a v  a2s .c o  m
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.List;

//import android.util.Log;

public class Root {

    public static List<String> executeSU(String command) throws IOException, InterruptedException {
      return executeSU(new String[] {command});
    }

    public static List<String> executeSU(String[] commands) throws IOException, InterruptedException {
      List<String> response = null;
      List<String> errors = null;
        Process process = null;
        DataOutputStream os = null;
        InputStreamReader osRes = null;
        InputStreamReader osErr = null;

        try {
            process = Runtime.getRuntime().exec("su");
            
            os = new DataOutputStream(process.getOutputStream());
            osRes = new InputStreamReader(process.getInputStream());
            osErr = new InputStreamReader(process.getErrorStream());
            BufferedReader readerRes = new BufferedReader(osRes);
            BufferedReader readerErr = new BufferedReader(osErr);
            
            for (String single : commands) {
                os.writeBytes(single + "\n");
                os.flush();
            }

            os.writeBytes("exit \n");
            os.flush();

            String line = readerRes.readLine();
            if (line != null) {
              response = new LinkedList<String>();
                while (line != null) {
                    response.add(line);
//                    Log.d("Root", "R:" + line + "$");
                    line = readerRes.readLine();
                }
            }
            
            // check if any error return string. Can I use return value instead ?
            line = readerErr.readLine();
            while (line != null) {
              String str = line.trim();
              if (!str.equals("")) {
                if (errors == null) {
                  errors = new LinkedList<String>();
                }
                errors.add(line);
//                    Log.d("Root", "E:" + line + "$");
              }
                line = readerErr.readLine();
            }
        }
        catch (Exception ex) {
          ex.printStackTrace();
        }
        finally {
            try {
                if (os != null) {
                    os.close();
                }
                if (osRes != null) {
                    osRes.close();
                }
                if (osErr != null) {
                  osErr.close();
                }
                // process.destroy();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        
        return errors != null ? errors : response;
    }
}

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