java中异步返回结果_如何从异步调用返回结果

小编典典

像下面这样

class GetStuffAsyncly extends AsyncTask {

String dialogString;

ProgressDialog dialog;

Context context;

AsyncListener listener;

// my vars....

public GetStuffAsyncly(String dialogMessage, Context con, AsyncListener listener) {

this.dialog = new ProgressDialog(con);

this.dialogString = dialogMessage;

this.context = con;

this.listener = listener;

}

/**

* Before starting background thread Show Progress Dialog

*/

@Override

protected void onPreExecute() {

super.onPreExecute();

listener.onTaskStarted();

}

@Override

protected String doInBackground(String... args) {

// do stuff in background...

return data;

}

/**

* After completing background task Dismiss the progress dialog

**/

protected void onPostExecute(String jsonString) {

// dismiss the dialog after getting all data

dialog.dismiss();

listener.onTaskFinished(jsonString);

}

}

和听众课

public interface AsyncListener {

void onTaskStarted();

void onTaskFinished(String data);

}

你可以这样打电话

new GetStuffAsyncly(message, this, new AsyncListener() {

@Override

public void onTaskStarted() {

//do your stuff

}

@Override

public void onTaskFinished(String data) {

//Do your stuff;

}

}).execute(parameter);

2020-11-01