How to read output of android process command

Question

I am trying to get the output of android shell command \'getprop\' with java since getprop() always returns null no matter what.

I tried this from developer.android.com:

Answer 1

Is there any particular reason why you want to run the command as an external process? There is a simpler way:

String android_rel_version = android.os.Build.VERSION.RELEASE;

However, if you really want to do it via a shell command, here is the way I got it to work:

try {
      // Run the command
      Process process = Runtime.getRuntime().exec("getprop");
      BufferedReader bufferedReader = new BufferedReader(
              new InputStreamReader(process.getInputStream()));

      // Grab the results
      StringBuilder log = new StringBuilder();
      String line;
      while ((line = bufferedReader.readLine()) != null) {
          log.append(line + "\n");
      }

      // Update the view
      TextView tv = (TextView)findViewById(R.id.my_text_view);
      tv.setText(log.toString());
} catch (IOException e) {
}