Android程序中如何执行shell脚本

少年击剑更吹箫,剑气箫心一例消。这篇文章主要讲述Android程序中如何执行shell脚本相关的知识,希望能为你提供帮助。
在做Android应用时,经常需要执行shell脚本,以快速实现某些功能;
在android应用程序中执行shell脚本可以省去一大堆繁琐的代码,还可以避免不必要的错误;
比如:拷贝文件夹时,可以执行shell命令中的 cp 命令达到目的;而在代码中实现拷贝文件夹时,不仅需要编写一大堆繁琐的代码,还容易陷入递归死循环的错误中;
比如:获取文件系统的读写权限,只需要执行shell脚本中一句  mount -o rw,remount / 就能轻松搞定;
比如:删除文件夹下某一个文件、或者某一类文件、或者全部文件,只需要执行shell脚本中的一句 rm -f   *(利用*通配符进行匹配) 就能轻松搞定;
再比如:静默安装时,只需要执行shell脚本中一句 pm install -r 便可达到目的;
如果这些都用代码来实现,不仅代码量增加,还容易造成很多bug,吃力不讨好!
 
如果能在android应用中执行shell脚本来达到目的,可以省去一大堆代码,避免很多易犯的错误,简洁高效,何乐而不为呢?!
 
下面给出一个在Android应用中执行shell脚本的工具类的示例,供大家参考:

1 package com.example.test; 2 3 import java.io.BufferedReader; 4 import java.io.DataOutputStream; 5 import java.io.IOException; 6 import java.io.InputStreamReader; 7 8 import android.util.Log; 9 10 /** 11* 执行shell脚本工具类 12* @author Mountain 13* 14*/ 15 public class CommandExecution { 16 17public static final String TAG = "CommandExecution"; 18 19public final static String COMMAND_SU= "su"; 20public final static String COMMAND_SH= "sh"; 21public final static String COMMAND_EXIT= "exit\n"; 22public final static String COMMAND_LINE_END = "\n"; 23 24/** 25* Command执行结果 26* @author Mountain 27* 28*/ 29public static class CommandResult { 30public int result = -1; 31public String errorMsg; 32public String successMsg; 33} 34 35/** 36* 执行命令—单条 37* @param command 38* @param isRoot 39* @return 40*/ 41public static CommandResult execCommand(String command, boolean isRoot) { 42String[] commands = {command}; 43return execCommand(commands, isRoot); 44} 45 46/** 47* 执行命令-多条 48* @param commands 49* @param isRoot 50* @return 51*/ 52public static CommandResult execCommand(String[] commands, boolean isRoot) { 53CommandResult commandResult = new CommandResult(); 54if (commands == null || commands.length == 0) return commandResult; 55Process process = null; 56DataOutputStream os = null; 57BufferedReader successResult = null; 58BufferedReader errorResult = null; 59StringBuilder successMsg = null; 60StringBuilder errorMsg = null; 61try { 62process = Runtime.getRuntime().exec(isRoot ? COMMAND_SU : COMMAND_SH); 63os = new DataOutputStream(process.getOutputStream()); 64for (String command : commands) { 65if (command != null) { 66os.write(command.getBytes()); 67os.writeBytes(COMMAND_LINE_END); 68os.flush(); 69} 70} 71os.writeBytes(COMMAND_EXIT); 72os.flush(); 73commandResult.result = process.waitFor(); 74//获取错误信息 75successMsg = new StringBuilder(); 76errorMsg = new StringBuilder(); 77successResult = new BufferedReader(new InputStreamReader(process.getInputStream())); 78errorResult = new BufferedReader(new InputStreamReader(process.getErrorStream())); 79String s; 80while ((s = successResult.readLine()) != null) successMsg.append(s); 81while ((s = errorResult.readLine()) != null) errorMsg.append(s); 82commandResult.successMsg = successMsg.toString(); 83commandResult.errorMsg = errorMsg.toString(); 84Log.i(TAG, commandResult.result + " | " + commandResult.successMsg 85+ " | " + commandResult.errorMsg); 86} catch (IOException e) { 87String errmsg = e.getMessage(); 88if (errmsg != null) { 89Log.e(TAG, errmsg); 90} else { 91e.printStackTrace(); 92} 93} catch (Exception e) { 94String errmsg = e.getMessage(); 95if (errmsg != null) { 96Log.e(TAG, errmsg); 97} else { 98e.printStackTrace(); 99} 100} finally { 101try { 102if (os != null) os.close(); 103if (successResult != null) successResult.close(); 104if (errorResult != null) errorResult.close(); 105} catch (IOException e) { 106String errmsg = e.getMessage(); 107if (errmsg != null) { 108Log.e(TAG, errmsg); 109} else { 110e.printStackTrace(); 111} 112} 113if (process != null) process.destroy(); 114} 115return commandResult; 116} 117 118 }

【Android程序中如何执行shell脚本】 

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