Android上执行shell命令的总结_android 执行shell命令

Android提供了两种执行shell命令的方法。

1.Runtime.getRuntime().exec(cmds)

2.ProcessBuilder(cmds)

两种方法背后的逻辑相同。都是创建一个新的进程，执行shell命令。本文以第一种方法为例。代码如下：

public class RuntimeExcUtil {
 
    public static int run(String[] fCmds){
        int tCode=0;
        mLogger.i("APP_SHELL", "start run");
        try {
            Process tProcess = Runtime.getRuntime().exec(fCmds);
            printError(tProcess);
            tCode = tProcess.waitFor();
            mLogger.i("APP_SHELL", "Code Result= "+tCode);
        } catch (Exception e) {
            mLogger.e("APP_SHELL", "run Failed, Error Message :"+e.getMessage());
        }
        return tCode;
    }
 
    public static int runWithSu(String[] fCmds){
        int tCode=0;
        mLogger.i("APP_SHELL", "start run");
        try {
            Process tProcess = Runtime.getRuntime().exec("su");
            runShellScript(tProcess,fCmds);
            printError(tProcess);
            tCode = tProcess.waitFor();
            mLogger.i("APP_SHELL", "Code Result= "+tCode);
        } catch (Exception e) {
            mLogger.e("APP_SHELL", "runWithSu Failed, Error Message :"+e.getMessage());
        }
        return tCode;
    }
 
    private static void printError(Process fProcess){
        StringBuilder output = new StringBuilder();
        String line;
        try(BufferedReader tReader = new BufferedReader(
                new InputStreamReader(fProcess.getErrorStream()))) {
            while ((line = tReader.readLine()) != null) {
                output.append(line).append("\n");
            }
            if (output.toString().length()>0){
                mLogger.e("APP_SHELL", "Error Output = "+output);
            }
        }catch (Exception e){
            mLogger.e("APP_SHELL", "Print Error Output Failed, Error Message :"+e.getMessage());
        }
    }
 
    private static void runShellScript(Process fProcess, String[] fCmds){
        try(DataOutputStream outputStream = new DataOutputStream(fProcess.getOutputStream())) {
            for (String tCmd :
                    fCmds) {
                Log.i("APP_SHELL", "Cmd :" + tCmd);
                outputStream.writeBytes(tCmd + "\n");
            }
            outputStream.flush();
            outputStream.writeBytes("exit\n");
            outputStream.flush();
        } catch (Exception e) {
            Log.e("APP_SHELL", "Run Shell Script Failed, Error Message :"+e.getMessage());
        }
    }
}

测试代码如下：

//case 1
RuntimeExcUtil.runWithSu(new String[]{"cp -a -p "+tJavaCrashLogFolderPath+" "+ tCollectFolder});
//case 2
RuntimeExcUtil.runWithSu(new String[]{"cd "+tJavaCrashLogFolderPath,"rm -f crash*"});
//case 3
RuntimeExcUtil.run(new String[]{"cd /sdcard/Download"});
//case 4
RuntimeExcUtil.run(new String[]{"cd", "/sdcard/Download"});
//case 5
RuntimeExcUtil.run(new String[]{"cp -a -p "+tJavaCrashLogFolderPath+" "+ tCollectFolder});
//case 6
RuntimeExcUtil.run(new String[]{"cp", "-a", "-p", tJavaCrashLogFolderPath,tCollectFolder});
//case 7
RuntimeExcUtil.run(new String[]{"rm -f /sdcard/crash/crash*"});
//case 8
RuntimeExcUtil.run(new String[]{"rm", "-f", "/sdcard/crash/crash*"});