java - Android onPostExecute 未被识别

Question

这是我的代码:

//.___ Async task bring info from API __./
AsyncTask asyncTask = new AsyncTask() {
    @Override
    protected Object doInBackground(Object[] objects) {
        mMovieDto = mDataSource.getPopularMovies();
        return null;
    }

    @Override
    protected void onPostExecute(Long result) {
        fillList();
    }
};
asyncTask.execute();

我收到以下错误:onPostExecute 未从 super 重写，女巫是将这个方法之王添加到我的 AsyncTask 的正确方法吗？

感谢您的帮助何塞

Answer 1

您缺少 AsyncTask 的泛型类型:

The three types used by an asynchronous task are the following:

1. Params, the type of the parameters sent to the task upon execution.
2. Progress, the type of the progress units published during the background computation.
3. Result, the type of the result of the background computation.

Not all types are always used by an asynchronous task. To mark a type as unused, simply use the type Void:

private class MyTask extends AsyncTask<Void, Void, Void> { ... }

像这样更改您的代码:

AsyncTask asyncTask = new AsyncTask<Void, Void, Void>() {

    @Override
    protected Void doInBackground(Void... params) {
        mMovieDto = mDataSource.getPopularMovies();
        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        fillList();
    }
};
asyncTask.execute();