Java tutorial
/* * Copyright (C) 2014 Michell Bak * * 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.miz.mizuu.fragments; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.SharedPreferences.OnSharedPreferenceChangeListener; import android.graphics.Bitmap.Config; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.ActivityCompat; import android.support.v4.app.ActivityOptionsCompat; import android.support.v4.app.Fragment; import android.support.v7.app.ActionBarActivity; import android.util.SparseBooleanArray; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.ViewTreeObserver; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; import com.github.ksoichiro.android.observablescrollview.ObservableGridView; import com.miz.db.DbAdapterMovies; import com.miz.functions.AsyncTask; import com.miz.functions.CoverItem; import com.miz.functions.MizLib; import com.miz.functions.WebMovie; import com.miz.mizuu.MizuuApplication; import com.miz.mizuu.MovieDetails; import com.miz.mizuu.R; import com.miz.mizuu.TMDbMovieDetails; import com.miz.utils.TypefaceUtils; import com.miz.utils.ViewUtils; import com.squareup.picasso.Picasso; import org.json.JSONArray; import org.json.JSONObject; import java.util.ArrayList; import static com.miz.functions.PreferenceKeys.GRID_ITEM_SIZE; public class MovieDiscoveryFragment extends Fragment implements OnSharedPreferenceChangeListener { private int mImageThumbSize, mImageThumbSpacing; private ImageAdapter mAdapter; private ArrayList<WebMovie> mMovies = new ArrayList<WebMovie>(); private SparseBooleanArray mMovieMap = new SparseBooleanArray(); private ObservableGridView mGridView = null; private ProgressBar mProgressBar; private DbAdapterMovies mDatabase; private Picasso mPicasso; private String mJson, mBaseUrl; private Config mConfig; /** * Empty constructor as per the Fragment documentation */ public MovieDiscoveryFragment() { } public static MovieDiscoveryFragment newInstance(String type, String json, String baseUrl) { MovieDiscoveryFragment pageFragment = new MovieDiscoveryFragment(); Bundle bundle = new Bundle(); bundle.putString("type", type); bundle.putString("json", json); bundle.putString("baseUrl", baseUrl); pageFragment.setArguments(bundle); return pageFragment; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mDatabase = MizuuApplication.getMovieAdapter(); String thumbnailSize = PreferenceManager.getDefaultSharedPreferences(getActivity()) .getString(GRID_ITEM_SIZE, getString(R.string.normal)); if (thumbnailSize.equals(getString(R.string.large))) mImageThumbSize = (int) (getResources().getDimensionPixelSize(R.dimen.image_thumbnail_size) * 1.33); else if (thumbnailSize.equals(getString(R.string.normal))) mImageThumbSize = getResources().getDimensionPixelSize(R.dimen.image_thumbnail_size) * 1; else mImageThumbSize = (int) (getResources().getDimensionPixelSize(R.dimen.image_thumbnail_size) * 0.75); mImageThumbSpacing = getResources().getDimensionPixelSize(R.dimen.image_thumbnail_spacing); // Set OnSharedPreferenceChange listener PreferenceManager.getDefaultSharedPreferences(getActivity()).registerOnSharedPreferenceChangeListener(this); mPicasso = MizuuApplication.getPicasso(getActivity()); mConfig = MizuuApplication.getBitmapConfig(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.image_grid_fragment, container, false); } @Override public void onViewCreated(View v, Bundle savedInstanceState) { super.onViewCreated(v, savedInstanceState); mProgressBar = (ProgressBar) v.findViewById(R.id.progress); mProgressBar.setVisibility(View.GONE); mAdapter = new ImageAdapter(getActivity()); mGridView = (ObservableGridView) v.findViewById(R.id.gridView); mGridView.setAdapter(mAdapter); mGridView.setColumnWidth(mImageThumbSize); // Calculate the total column width to set item heights by factor 1.5 mGridView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { if (mAdapter.getNumColumns() == 0) { final int numColumns = (int) Math .floor(mGridView.getWidth() / (mImageThumbSize + mImageThumbSpacing)); if (numColumns > 0) mAdapter.setNumColumns(numColumns); MizLib.removeViewTreeObserver(mGridView.getViewTreeObserver(), this); } } }); mGridView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { Intent i = new Intent(); if (mMovieMap.get(Integer.valueOf(mMovies.get(arg2).getId()))) { i.setClass(getActivity(), MovieDetails.class); i.putExtra("tmdbId", mMovies.get(arg2).getId()); } else { i.setClass(getActivity(), TMDbMovieDetails.class); i.putExtra("tmdbId", mMovies.get(arg2).getId()); i.putExtra("title", mMovies.get(arg2).getTitle()); } ActivityOptionsCompat options = ActivityOptionsCompat.makeSceneTransitionAnimation(getActivity(), arg1.findViewById(R.id.cover), "cover"); ActivityCompat.startActivity(getActivity(), i, options.toBundle()); } }); if (getArguments().containsKey("json")) { mJson = getArguments().getString("json"); mBaseUrl = getArguments().getString("baseUrl"); loadJson(); } } @Override public void onStart() { super.onStart(); ((ActionBarActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true); } private class ImageAdapter extends BaseAdapter { private LayoutInflater inflater; private final Context mContext; private int mNumColumns = 0; public ImageAdapter(Context context) { mContext = context; inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } @Override public int getCount() { return mMovies.size(); } @Override public Object getItem(int position) { return mMovies.get(position).getUrl(); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup container) { final WebMovie mMovie = mMovies.get(position); CoverItem holder; if (convertView == null) { convertView = inflater.inflate(R.layout.grid_cover_two_line, container, false); holder = new CoverItem(); holder.cover = (ImageView) convertView.findViewById(R.id.cover); holder.text = (TextView) convertView.findViewById(R.id.text); holder.text.setSingleLine(true); holder.subtext = (TextView) convertView.findViewById(R.id.sub_text); holder.subtext.setSingleLine(true); holder.text.setTypeface(TypefaceUtils.getRobotoMedium(mContext)); convertView.setTag(holder); } else { holder = (CoverItem) convertView.getTag(); } holder.cover.setImageResource(R.color.card_background_dark); holder.text.setText(mMovie.getTitle()); if (mMovieMap.get(Integer.valueOf(mMovie.getId()))) { holder.subtext.setText(mMovie.getDate() + " (" + getString(R.string.inLibrary) + ")"); } else { holder.subtext.setText(mMovie.getDate()); } if (!mMovie.getUrl().contains("null")) mPicasso.load(mMovie.getUrl()).config(mConfig).into(holder); else holder.cover.setImageResource(R.drawable.loading_image); return convertView; } public void setNumColumns(int numColumns) { mNumColumns = numColumns; } public int getNumColumns() { return mNumColumns; } } private void loadJson() { try { JSONObject jObject = new JSONObject(mJson); JSONArray jArray = jObject.getJSONObject(getArguments().getString("type")).getJSONArray("results"); mMovies.clear(); for (int i = 0; i < jArray.length(); i++) { if (!MizLib.isAdultContent(getActivity(), jArray.getJSONObject(i).getString("title")) && !MizLib .isAdultContent(getActivity(), jArray.getJSONObject(i).getString("original_title"))) { mMovies.add(new WebMovie(getActivity().getApplicationContext(), jArray.getJSONObject(i).getString("original_title"), jArray.getJSONObject(i).getString("id"), mBaseUrl + MizLib.getImageUrlSize(getActivity()) + jArray.getJSONObject(i).getString("poster_path"), MizLib.getPrettyDate(getActivity(), jArray.getJSONObject(i).getString("release_date")))); } } new MoviesInLibraryCheck(mMovies).execute(); } catch (Exception e) { } } private class MoviesInLibraryCheck extends AsyncTask<Void, Void, Void> { private ArrayList<WebMovie> movies = new ArrayList<WebMovie>(); public MoviesInLibraryCheck(ArrayList<WebMovie> movies) { this.movies = movies; mMovieMap.clear(); } @Override protected Void doInBackground(Void... params) { for (int i = 0; i < movies.size(); i++) mMovieMap.put(Integer.valueOf(movies.get(i).getId()), mDatabase.movieExists(movies.get(i).getId())); return null; } @Override protected void onPostExecute(Void result) { if (isAdded()) { mAdapter.notifyDataSetChanged(); } } } @Override public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { if (key.equals(GRID_ITEM_SIZE)) { String thumbnailSize = PreferenceManager.getDefaultSharedPreferences(getActivity()) .getString(GRID_ITEM_SIZE, getString(R.string.normal)); if (thumbnailSize.equals(getString(R.string.large))) mImageThumbSize = (int) (getResources().getDimensionPixelSize(R.dimen.image_thumbnail_size) * 1.33); else if (thumbnailSize.equals(getString(R.string.normal))) mImageThumbSize = getResources().getDimensionPixelSize(R.dimen.image_thumbnail_size) * 1; else mImageThumbSize = (int) (getResources().getDimensionPixelSize(R.dimen.image_thumbnail_size) * 0.75); mGridView.setColumnWidth(mImageThumbSize); final int numColumns = (int) Math.floor(mGridView.getWidth() / (mImageThumbSize + mImageThumbSpacing)); if (numColumns > 0) { mAdapter.setNumColumns(numColumns); } mAdapter.notifyDataSetChanged(); } } }