Java tutorial
/* * Copyright 2016 Nikolay Kucheriaviy * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.ne1c.rainbowmvp.base; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v4.app.LoaderManager; import android.support.v4.content.Loader; import com.ne1c.rainbowmvp.PresenterLoader; public abstract class BaseFragment<P extends BasePresenter> extends Fragment implements LoaderManager.LoaderCallbacks<P> { protected final int LOADER_ID = 593; private P mPresenter; private boolean mPresenterDelivered; @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); getLoaderManager().initLoader(LOADER_ID, null, this); } @Override public Loader<P> onCreateLoader(int id, Bundle args) { return new PresenterLoader<>(getActivity(), getPresenterTag()); } @Override public void onLoadFinished(Loader<P> loader, P presenter) { if (!mPresenterDelivered) { mPresenter = presenter; mPresenterDelivered = true; } } @Override public void onLoaderReset(Loader<P> loader) { mPresenter = null; } protected P getPresenter() { return mPresenter; } protected abstract String getPresenterTag(); }