Android: LoaderCallbacks.OnLoadFinished called twice

Question

I noticed strange situation using Android Loaders and Fragments. When I invoke LoaderManager.initLoader() after orientation change onLoadFinished is not called (although doc

Answer 1

I solved the problem of onLoadFinished being called twice like this. In your Fragment.onActivityCreated() init your Loader like this

if (getLoaderManager().getLoader(LOADER_ID) == null) {
    getLoaderManager().initLoader(LOADER_ID, bundle, loaderCallbacks);
} else {
    getLoaderManager().restartLoader(LOADER_ID, bundle, loaderCallbacks);

}

here loaderCallbacks implements your usual Loader callbacks

private LoaderManager.LoaderCallbacks loaderCallbacks
        = new LoaderManager.LoaderCallbacks() {
    @Override
    public Loader onCreateLoader(int id, Bundle args) {
        ...
        ...
    }

    @Override
    public void onLoadFinished(Loader loader, T data) {
        ...
        ...
    }

    @Override
    public void onLoaderReset(Loader loader) {
        ...
        ...
    }
};