什么类型应该是mLoaderManager以及如何声明它？

Question

这是RxJava for Android App Development book, p.20 使用RxJava和Loader的代码。什么类型应该是mLoaderManager以及如何声明它？

private static class LoaderInitOnSubscribe implements Observable.OnSubscribe<Story> {
//...
@Override
public void call(final Subscriber<? super Story> subscriber) {
    mLoaderManager.initLoader(LOADER_ID, mLoaderArgs, new LoaderCallbacks<Story>() {
        @Override
        public Loader<Story> onCreateLoader(int id, Bundleargs) {
            return new StoryLoader(mContext);
        }
        @Override
        public void onLoadFinished(Loader<Story> loader, Story data) {
            subscriber.onNext(data);
        }
        @Override
        public void onLoaderReset(Loader<Story> loader) {}
    });
}}

Answer 1

drinks = [] for x in df1.Model: for y in df2.Model: for j in df1.Color: for k in df2.Color: if x == y and j == k: drinks.append(df2.loc[df2['Model'] == x, 'Drink'].iloc[0]) 来自['Soda', 'Soda', 'Soda', 'Soda', 'Soda', 'Soda', 'Water', 'Water', 'Water']来自getLoaderManager()或来自LoaderManager来自getLoaderManager()。