Java tutorial
package tech.salroid.filmy.fragment; import android.content.Intent; import android.content.pm.ActivityInfo; import android.content.res.Configuration; import android.database.Cursor; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.LoaderManager; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.StaggeredGridLayoutManager; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import butterknife.BindView; import butterknife.ButterKnife; import tech.salroid.filmy.R; import tech.salroid.filmy.activities.MainActivity; import tech.salroid.filmy.activities.MovieDetailsActivity; import tech.salroid.filmy.custom_adapter.MainActivityAdapter; import tech.salroid.filmy.customs.BreathingProgress; import tech.salroid.filmy.customs.CustomToast; import tech.salroid.filmy.database.FilmContract; import tech.salroid.filmy.database.MovieProjection; /* * Filmy Application for Android * Copyright (c) 2016 Ramankit Singh (http://github.com/webianks). * * 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. */ public class Trending extends Fragment implements MainActivityAdapter.ClickListener, LoaderManager.LoaderCallbacks<Cursor> { @BindView(R.id.breathingProgress) BreathingProgress breathingProgress; @BindView(R.id.recycler) RecyclerView recycler; private MainActivityAdapter mainActivityAdapter; public boolean isShowingFromDatabase; public Trending() { // Required empty public constructor } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_trending, container, false); ButterKnife.bind(this, view); boolean tabletSize = getResources().getBoolean(R.bool.isTablet); if (tabletSize) { if (getActivity().getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) { StaggeredGridLayoutManager gridLayoutManager = new StaggeredGridLayoutManager(6, StaggeredGridLayoutManager.VERTICAL); recycler.setLayoutManager(gridLayoutManager); } else { StaggeredGridLayoutManager gridLayoutManager = new StaggeredGridLayoutManager(8, StaggeredGridLayoutManager.VERTICAL); recycler.setLayoutManager(gridLayoutManager); } } else { if (getActivity().getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) { StaggeredGridLayoutManager gridLayoutManager = new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL); recycler.setLayoutManager(gridLayoutManager); } else { StaggeredGridLayoutManager gridLayoutManager = new StaggeredGridLayoutManager(5, StaggeredGridLayoutManager.VERTICAL); recycler.setLayoutManager(gridLayoutManager); } } mainActivityAdapter = new MainActivityAdapter(getActivity(), null); recycler.setAdapter(mainActivityAdapter); mainActivityAdapter.setClickListener(this); return view; } @Override public void onResume() { super.onResume(); getActivity().getSupportLoaderManager().initLoader(MovieProjection.TRENDING_MOVIE_LOADER, null, this); } @Override public Loader<Cursor> onCreateLoader(int id, Bundle args) { Uri moviesForTheUri = FilmContract.MoviesEntry.CONTENT_URI; return new CursorLoader(getActivity(), moviesForTheUri, MovieProjection.MOVIE_COLUMNS, null, null, null); } @Override public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) { if (cursor != null && cursor.getCount() > 0) { isShowingFromDatabase = true; mainActivityAdapter.swapCursor(cursor); breathingProgress.setVisibility(View.GONE); } else if (!((MainActivity) getActivity()).fetchingFromNetwork) { CustomToast.show(getActivity(), "Failed to get latest movies.", true); ((MainActivity) getActivity()).cantProceed(-1); } } @Override public void onLoaderReset(Loader<Cursor> loader) { mainActivityAdapter.swapCursor(null); } @Override public void itemClicked(Cursor cursor) { int id_index = cursor.getColumnIndex(FilmContract.MoviesEntry.MOVIE_ID); int title_index = cursor.getColumnIndex(FilmContract.MoviesEntry.MOVIE_TITLE); Intent intent = new Intent(getActivity(), MovieDetailsActivity.class); intent.putExtra("title", cursor.getString(title_index)); intent.putExtra("activity", true); intent.putExtra("type", 0); intent.putExtra("database_applicable", true); intent.putExtra("network_applicable", true); intent.putExtra("id", cursor.getString(id_index)); startActivity(intent); if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) getActivity().overridePendingTransition(0, 0); } public void retryLoading() { getActivity().getSupportLoaderManager().restartLoader(MovieProjection.TRENDING_MOVIE_LOADER, null, this); } }