root工具类

感谢github前辈分享

参考来源：https://github.com/visi0nary/App2SystemMover/blob/master/app/src/main/java/de/visi0nary/app2system/MainActivity.java

package com.palmv.networksalebox.util;import android.util.Log;import java.io.BufferedOutputStream;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.util.ArrayList;/** * @author：czg * * @date：2016/8/24 * @description：用户判断apk是否已经拥有root权限 */public class RootUtil {    static String TAG = "RootUtil";    static private Process suProcess = null;    static private DataOutputStream stdin = null;    static private BufferedWriter writer = null;    static private boolean rootInitialized =false;   //app是否或许root权限    /**     * app获取root权限初始化     * @return 是否获取root权限     */    static public boolean initializeRoot(){        int returnValue = -1;        rootInitialized = false;        if (DeviceisRoot()) {  //DroidPackageUtil.isRoot()            try {                // start an SU process                suProcess = Runtime.getRuntime().exec("su");                stdin = new DataOutputStream(suProcess.getOutputStream());                writer = new BufferedWriter(new OutputStreamWriter(stdin));                //==                stdin.writeBytes("exit\n");                stdin.flush();// wait for the SU process to terminate (if it exists)                suProcess.waitFor();                // check for the exit value (0 if it was a root process, 255 if not)                returnValue  = suProcess.exitValue();                Log.i("Main", "结果"+ returnValue);                rootInitialized = (returnValue==0);                return rootInitialized;            }            catch (Exception e) {                Log.i(TAG,"判断程序是否有root权限发生异常" + e.toString());            } finally {//                if (suProcess != null && stdin != null && writer != null) {//                    rootInitialized = true;//                }            }        }        else {            Log.i(TAG,"设置没有root过" );            rootInitialized = false;        }        return  rootInitialized;    }    /**     * apk取消root     */    static public void stopRoot() {        // stop root, clean up        if(rootInitialized) {            try {                writer.close();                stdin.close();            } catch (IOException e) {                e.printStackTrace();            }            finally {                suProcess.destroy();            }        }    }    /**     * 当前app 的root状态     * @return     */    static public boolean isRootInitialized() {        return rootInitialized;    }    /**     * 手机或设备是否root过     *     * @return     */    public static boolean DeviceisRoot() {        boolean isRoot = false;        String sys = java.lang.System.getenv("PATH");        ArrayList<String> commands = new ArrayList<String>();        String[] path = sys.split(":");        for (int i = 0; i < path.length; i++) {            String commod = "ls -l " + path[i] + "/su";            commands.add(commod);            java.lang.System.out.println("commod : " + commod);        }        ArrayList<String> res = run("/system/bin/sh", commands);        String response = "";        for (int i = 0; i < res.size(); i++) {            response += res.get(i);        }        int inavailableCount = 0;        String root = "-rwsr-sr-x root root";        for (int i = 0; i < res.size(); i++) {            if (res.get(i).contains("No such file or directory")                    || res.get(i).contains("Permission denied")) {                inavailableCount++;            }        }        return inavailableCount < res.size();    }    // 批量运行命令行    private static ArrayList run(String shell, ArrayList<String> commands) {        ArrayList output = new ArrayList();        Process process = null;        try {            process = Runtime.getRuntime().exec(shell);            BufferedOutputStream shellInput = new BufferedOutputStream(                    process.getOutputStream());            BufferedReader shellOutput = new BufferedReader(                    new InputStreamReader(process.getInputStream()));            for (String command : commands) {                shellInput.write((command + " 2>&1\n").getBytes());            }            shellInput.write("exit\n".getBytes());            shellInput.flush();            String line;            while ((line = shellOutput.readLine()) != null) {                output.add(line);            }            process.waitFor();        } catch (IOException e) {            e.printStackTrace();        } catch (InterruptedException e) {            e.printStackTrace();        } finally {            process.destroy();        }        return output;    }}