安卓从java程序执行终端命令

Question

我正在用java编写一个程序，在安卓虚拟设备上进行monkey测试。在这个程序中，我运行以下三个命令

Runtime rt = Runtime.getRuntime();
Process clear = rt.exec("/Users/<username>/Library/Android/sdk/platform-tools/adb logcat -c");
Process monkey = rt.exec("/Users/<username>/Library/Android/sdk/platform-tools/adb shell monkey -p gy.softwaretesting1 --throttle 200 200");
Process report = rt.exec("/Users/<username>/Library/Android/sdk/platform-tools/adb logcat -d *:E | grep AndroidRuntime >> /Users/<username>/Documents/workspace/SoftwareTesting/fileReport.txt");

第一个清除logcat缓冲区，第二个启动monkey测试，第三个获取crush报告并将其打印到文件中。前两个完全符合我的要求，而第三个则不行。当我在第三个命令中扮演创建文件的角色时，它也会停止工作。我想通过java程序中的terminal命令创建文件可能有问题。如果你有任何想法，请帮忙

Answer 1

package com.gmail.jackkobec.java.core;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 * @Author Jack <jackkobec>
 */
public class ExecuteTerminalCommandsFromJava {

    public static void main(String[] args) throws IOException {
        // Gets runtime
        Runtime runtime = Runtime.getRuntime();
        // Declare a command with parameters as string array
        String[] commandWithParameters = {"free", "-h"};
        // Execute command and get it process  
        Process commandExecuteProcess = runtime.exec(commandWithParameters);

        // Gets input stream from process, convert it to buffered reader
        BufferedReader lineReader = new BufferedReader(new InputStreamReader(commandExecuteProcess.getInputStream()));
        // Read line by line from process input stream decorated as buffered reader
        lineReader.lines().forEach(System.out::println);

        // Gets errors input stream from process, convert it to buffered reader
        BufferedReader errorReader = new BufferedReader(new InputStreamReader(commandExecuteProcess.getErrorStream()));
        // Read line by line from process errors input stream decorated as buffered reader
        errorReader.lines().forEach(System.out::println);
    }
}

Output is like: total used free shared buff/cache available Mem: 15G 4,8G 7,9G 561M
2,7G 9,7G Swap: 7,6G 0B 7,6G