Android如何等待线程完成并通知？

Question

The task of the program is to read data from internet and process it.

I am using AsyncTask inside the main class to read data from internet.But AsyncTask will run as separate thread because of that main class finishes before AsyncTask reads the webpage.Now i want the main class to wait for AsyncTask thread to complete(ie read data from internet) and resume the main class thread.

NOTE :

1. I don't want to do that process in onPostExcecute() method.
2. I don't want to use sleep().

Here is the code

    public class MyApp extends Activity {

    String data[] = null;

    super.onCreate(savedInstanceState);
    setContentView(R.layout.m1_pm_material_requisitions_main);
    tv = (TextView)findViewById(R.id.test_textview);

    GetData get = new GetData();
    get.execute(new String[]{"http://192.168.92.171/erp/index.php"});
    try {
        this.wait();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

   //i want the program to wait here till the above task is done and proceed further 

   /* Here the code to process the data in String[] data;....
   ..........
   .......... */      



    private class GetData extends AsyncTask<String, Void, String> {

    protected String doInBackground(String... params) {

    // code to read webpage from internet
    //im using HttpGet to read a webpage

    //now the content of webpage is stored in String[] data

      }
     }
    }

Answer 1

Replace

this.wait();

with

get.wait(); // wait until get calls notify()

and call

this.notify(); // wakeup someone who waiting for me

somewhere you want.

Answer 2

Put the code to process the string in your AsyncTask too. Do as much there as you can. Only return to the main thread when it's time to update the UI. And if you really don't want anything in onPostExecute() , I suppose you could send your app an Intent .