如何在java程序中运行命令行命令并将控制台的输出复制到文件中？

您的问题不太清楚，但如果您的代码正常运行，请将

cmd/c dir

替换为

cmd/c dir>test.txt

直接使用进程会有一些小的缺陷。看看这个例子。不过，我不确定安卓系统

class cmdln_file {

    public static void main(String[] args) throws IOException {

        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

        try {
            Runtime rt = Runtime.getRuntime();
            Process pr = rt.exec("cmd /c dir");
            //Process pr = rt.exec("C://apkfiles//new_pro2.apk");

            BufferedReader input = new BufferedReader(new InputStreamReader(pr.getInputStream()));

            String line=null;

            while((line=input.readLine()) != null) {
                System.out.println(line);
            }

            int exitVal = pr.waitFor();
            System.out.println("Exited with error code "+exitVal);

        } catch(Exception e) {
            System.out.println(e.toString());
            e.printStackTrace();
        }
    }
}