Read a large text file into Textview

Question

I want to read large file from sdcard into text view. I have idea but i don\'t know how to apply.

I think this things need to use: Handler And Thread

But i d

Answer 1

Your problem is that you are accessing a View owned by the GUI thread from the thread that is reading your file:

subtitletv.setText(text.toString());

You need to read the file, then pass its contents to the main thread to be displayed.

//Create a handler on the UI Thread:
private Handler mHandler = new Handler();

//Executed in a non-GUI thread:
public void updateView(){
    final String str = TheDataFromTheFile;
    mHandler.post(new Runnable(){
        @Override
        public void run() {
             subtitletv.setText(str);
        }
    }
}