所以，我希望能够编写一个应用程序，可以打开和显示的logcat信息，dmesg的，也可以运行像'ls'的'猫''回声'CD命令。

So I want to be able to write an app that can turn on and display logcat messages, dmesg, and also be able to run commands like 'ls' 'cat' 'echo' 'cd.'

如果我做到以下几点：

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;
        }

我可以把文字满到文本查看，看到的根目录。

I can put the text "full" to a Text View and see the root directory.

但是，这就是所有我能做的。比方说，我想找到一个目录，并改变它，我有麻烦了。

However, that's about all I can do. Let's say I want to find a directory, and change to it, I'm having trouble.

所以，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;
        }

我什么也得不到为全和文本

I get nothing for both "full" and "text"

任何想法？

推荐答案

您可以与哪些文件夹应列出提供的路径执行ls

You can execute ls with provided path for which folders should be listed

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