Question

I’m trying to download some website’s code to my app like this:

 public void wypned(final View pwn) throws IllegalStateException, IOException{
    HttpClient httpClient = new DefaultHttpClient();
    HttpContext localContext = new BasicHttpContext();
    HttpGet httpGet = new HttpGet("http://example.com");
    HttpResponse response = httpClient.execute(httpGet, localContext);
    String result = "";

    BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent() ) );

    String line = null;
    while ((line = reader.readLine()) != null){
    result += line + "\n";
    }
}

And all i got is fatal error. LogCat says:

Caused by: android.os.NetworkOnMainThreadException
 on Android 3.x and up, you can't do network I/O on the main thread

Could someone tell me how to solve it? I’ve tried to do something with threads but it didn’t work out.

Answer 1

Implement an asyncTask for doing that :

public class MyAsyncTask extends AsyncTask<Void, Void, Result>{

                        private Activity activity;
                        private ProgressDialog progressDialog;

            public MyAsyncTask(Activity activity) {
                            super();
                this.activity = activity;
            }

            @Override
            protected void onPreExecute() {
            super.onPreExecute();
                progressDialog = ProgressDialog.show(activity, "Loading", "Loading", true);
            }

            @Override
            protected Result doInBackground(Void... v) {
            //do your stuff here
            return null;

            }

            @Override
            protected void onPostExecute(Result result) {
                progressDialog.dismiss();
                Toast.makeText(activity.getApplicationContext(), "Finished.", 
                        Toast.LENGTH_LONG).show();
            }


}

Call it from the activity:

MyAsyncTask task = new AsyncTask(myActivity.this);
task.execute();