How can I read a file constantly with AssetManager in Android Studio

Question

I working on a project. In order to take different inputs from a file, I need to read my file again and again (constantly). After my code reading the file once, while it running, I change it content but it can not see the new content. My code is here:

Thread thread = new Thread() {

  public void run() {
    while (true) {
      try {


        AssetManager assetManager = getAssets();
        InputStream input;

        try {

          input = assetManager.open("dummy_input.txt", 0);
          //RandomAccessFile in = new RandomAccessFile("file.txt", "r")
          Log.d(TAG, "here");

          int size = input.available();

          byte[] buffer = new byte[size];
          input.read(buffer);
          input.close();

          str = new String(buffer);

          //txtFileName.setText(text);

        } catch (Exception e) {
          // TODO: handle exception
          e.printStackTrace();
        }


        Log.d(TAG, "local Thread sleeping");
        Log.d(TAG, "str3= " + str);
        Thread.sleep(1000);
      } catch (InterruptedException e) {
        Log.e(TAG, "local Thread error", e);
      }
    }
  }
};
thread.start();

How did you change contents of your app's assets while it is running? — frogatto, Aug 11 '15 at 07:46
You 'tried' to change it. Well that is what you say. But you are not showing the used code. The code above only reads that file. — greenapps, Aug 11 '15 at 07:49
I change the "dummy_input.txt" file without code. I change it manually :) with notepad. I try to read dynamically — Hamza GÜPÜR, Aug 11 '15 at 07:56
@HamzaGÜPÜR Whenever you change contents of assets folder, you should repackage and resend and reinstall your app to changes take effect. — frogatto, Aug 11 '15 at 07:58
@HamzaGÜPÜR No, your codes read that file dynamically at run-time. What's it's problem? — frogatto, Aug 11 '15 at 08:00
@abforce .It is not good for me. Do you suggest me any other way for my situation ? — Hamza GÜPÜR, Aug 11 '15 at 08:00
@HamzaGÜPÜR I cannot figure out your situation. Exactly tell me what would you like to get? How should your app act? — frogatto, Aug 11 '15 at 08:02
`After my code reading the file once, while it running, I change it content `. Sorry but this cannot be true as the file is read in a loop. And you are not telling how you change the file. — greenapps, Aug 11 '15 at 08:02
@abforce, It reads the file but I changed the txt file without repack the app. You say the main problem is this. Right ? — Hamza GÜPÜR, Aug 11 '15 at 08:03
You changed the file with notepad on your pc. How can you think that it would have changed in your running app to on a different device? — greenapps, Aug 11 '15 at 08:04
@HamzaGÜPÜR Yes, Android cannot access your assets folder in your PC, It should be repackaged and reinstalled. — frogatto, Aug 11 '15 at 08:05
@abforce My app have to read a txt file dynamically it can contain only one digit "0" or "1" . If the txt file content is "1" then my app gives me a notificaiton. — Hamza GÜPÜR, Aug 11 '15 at 08:06
@greenapps I connect my phone over adb to computer and then I changed the content — Hamza GÜPÜR, Aug 11 '15 at 08:08
@HamzaGÜPÜR By ADB you cannot change a file. You can only fetch it out and then save it to the device. — frogatto, Aug 11 '15 at 08:10
You cannot grab and change with adb the content of a file in assets of your apk to begin wirh. So where are you talking about? And why did not you tell right away? All what you are doing makes no sense. If you want an updated file than update the file in the IDE. Then recompile, install and run. — greenapps, Aug 11 '15 at 13:09

How can I read a file constantly with AssetManager in Android Studio

0 Answers0