Android Runtime.getRuntime().exec() 通过目录导航

Question

所以我希望能够编写一个应用程序，它可以打开和显示 logcat 消息、dmesg，并且还能够运行诸如“ls”“cat”“echo”“cd”之类的命令。

如果我执行以下操作:

nativeProc = Runtime.getRuntime().exec("ls\n");
        BufferedWriter out = new BufferedWriter(new OutputStreamWriter(nativeProc.getOutputStream()));
        BufferedReader in = new BufferedReader(new InputStreamReader(nativeProc.getInputStream()));
        String line = null;

        while ((line = in.readLine()) != null) {  
            full = full + "\n" + line;
        }

我可以将文本“完整”放入 TextView 并查看根目录。

然而，这就是我所能做的。假设我想找到一个目录，然后更改到它，我遇到了麻烦。

如果我这样做:

nativeProc = Runtime.getRuntime().exec("ls\n");
        BufferedWriter out = new BufferedWriter(new OutputStreamWriter(nativeProc.getOutputStream()));
        BufferedReader in = new BufferedReader(new InputStreamReader(nativeProc.getInputStream()));
        String line = null;

        while ((line = in.readLine()) != null) {  
            full = full + "\n" + line;
        }
        /* Code here to confirm the existing of a directory*/


        nativeProc = Runtime.getRuntime().exec("cd tmp\n");
        BufferedReader in2 = new BufferedReader(new InputStreamReader(nativeProc.getInputStream()));
        line = null;
        String test = "\nStart1:\n";
        while ((line = in2.readLine()) != null) {  
            test = test + "\n" + line;
        }

我对“完整”和“文本”都一无所获

有什么想法吗？

Answer 1

您可以使用提供的路径执行 ls，其中应列出文件夹

Runtime.getRuntime().exec(new String[] { "ls", "\\tmp"});