安卓ROOT权限代码

1.[代码][Java]代码跳至package com.linin.utils;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;/** * root权限工具类 * * @author linin * */public class RootUtil {private static final String TAG = “linin.root”;private static boolean mHaveRoot = false;/** * 判断机器Android是否已经root，，即是否获取root权限 */public static boolean haveRoot() {if (!mHaveRoot) {int ret = execRootCmdSilent(“echo test”); // 通过执行测试命令来检测if (ret != -1) {L.i(TAG, “have root!”);mHaveRoot = true;} else {L.i(TAG, “not root!”);}} else {L.i(TAG, “mHaveRoot = true, have root!”);}return mHaveRoot;}/** 获取root权限 */public static boolean root() {try {Runtime.getRuntime().exec(new String[] { “/system/bin/su”, “-c”,”chmod 777 /dev/graphics/fb0″ });} catch (IOException e) {e.printStackTrace();L.i(TAG, “root fail!”);return false;}L.i(TAG, “root success!”);return true;}/** * 执行命令并且输出结果 */public static String execRootCmd(String cmd) {String result = “”;DataOutputStream dos = null;DataInputStream dis = null;try {Process p = Runtime.getRuntime().exec(“su”);// 经过Root处理的android系统即有su命令dos = new DataOutputStream(p.getOutputStream());dis = new DataInputStream(p.getInputStream());L.i(TAG, cmd);dos.writeBytes(cmd + “\n”);dos.flush();dos.writeBytes(“exit\n”);dos.flush();String line = null;while ((line = dis.readLine()) != null) {L.d(“result”, line);result += line;}p.waitFor();} catch (Exception e) {e.printStackTrace();} finally {if (dos != null) {try {dos.close();} catch (IOException e) {e.printStackTrace();}}if (dis != null) {try {dis.close();} catch (IOException e) {e.printStackTrace();}}}return result;}/** * 执行命令但不关注结果输出 */public static int execRootCmdSilent(String cmd) {int result = -1;DataOutputStream dos = null;try {Process p = Runtime.getRuntime().exec(“su”);dos = new DataOutputStream(p.getOutputStream());L.i(TAG, cmd);dos.writeBytes(cmd + “\n”);dos.flush();dos.writeBytes(“exit\n”);dos.flush();p.waitFor();result = p.exitValue();} catch (Exception e) {e.printStackTrace();} finally {if (dos != null) {try {dos.close();} catch (IOException e) {e.printStackTrace();}}}return result;}}

对于旅行，从来都记忆模糊。记不得都去了哪些地方，