how to do functions in an AsyncTask?

Question

I have to use directions() function in an AsyncTask to avoid network processing on the UI thread.i\'m unable to do this thing. MY code is

    public class MainAc         


        

Answer 1

This is the basic structure of an AsyncTask

public class TalkToServer extends AsyncTask {
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

    @Override
    protected void onProgressUpdate(String... values) {
        super.onProgressUpdate(values);

    }

    @Override
    protected String doInBackground(String... params) {
    //do your work here
        return something;
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
           // do something with data here-display it or send to mainactivity
}

you can do your network stuff and/or stuff that you have in directions in doInBackground() and update UI on the other methods. You can also put the directions method as a private method of your AsyncTask

Then you would call this from your MainActivity like

TalkToServer networkStuff = new TalkToServer(); //could pass params to a constructor here such as context
networkStuff.execute();

If the AsyncTask isn't an inner class of your MainActivity then you will need a constructor to receive the context from your MainActivity if you want to do UI stuff