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.app.AlertDialog; import android.content.BroadcastReceiver; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.IntentFilter; import android.graphics.Bitmap.Config; import android.graphics.Color; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.Fragment; import android.support.v4.content.LocalBroadcastManager; import android.support.v7.widget.SwitchCompat; import android.view.ActionMode; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.view.ViewTreeObserver; import android.widget.AbsListView.MultiChoiceModeListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemLongClickListener; import android.widget.BaseAdapter; import android.widget.CompoundButton; import android.widget.GridView; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import com.miz.apis.trakt.Trakt; import com.miz.db.DbAdapterTvShowEpisodes; import com.miz.functions.CoverItem; import com.miz.functions.GridEpisode; import com.miz.functions.MizLib; import com.miz.functions.TvShowEpisode; import com.miz.loader.OnLoadCompletedCallback; import com.miz.loader.TvShowEpisodeLoader; import com.miz.mizuu.IdentifyTvShowEpisode; import com.miz.mizuu.MizuuApplication; import com.miz.mizuu.R; import com.miz.mizuu.TvShowEpisodeDetails; import com.miz.utils.LocalBroadcastUtils; import com.miz.utils.TvShowDatabaseUtils; import com.miz.utils.TypefaceUtils; import com.squareup.otto.Bus; import com.squareup.otto.Subscribe; import com.squareup.picasso.Picasso; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import static com.miz.functions.PreferenceKeys.TVSHOWS_COLLECTION_LAYOUT; public class TvShowEpisodesFragment extends Fragment { private static final String SHOW_ID = "showId"; private static final String SEASON = "season"; private Set<Integer> mCheckedEpisodes = new HashSet<Integer>(); private Context mContext; private GridView mGridView; private ProgressBar mProgressBar; private ImageAdapter mAdapter; private String mShowId; private boolean mUseGridView, mContextualActionBarEnabled, mLoading = true; private int mSeason, mImageThumbSize, mImageThumbSpacing, mResizedWidth, mResizedHeight; private Picasso mPicasso; private Config mConfig; private Bus mBus; private TvShowEpisodeLoader mEpisodeLoader; public static TvShowEpisodesFragment newInstance(String showId, int season) { TvShowEpisodesFragment frag = new TvShowEpisodesFragment(); Bundle b = new Bundle(); b.putString(SHOW_ID, showId); b.putInt(SEASON, season); frag.setArguments(b); return frag; } public TvShowEpisodesFragment() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); mContext = getActivity().getApplicationContext(); mPicasso = MizuuApplication.getPicasso(mContext); mConfig = MizuuApplication.getBitmapConfig(); mBus = MizuuApplication.getBus(); mBus.register(this); mImageThumbSize = getResources().getDimensionPixelSize(R.dimen.backdrop_thumbnail_width); mImageThumbSpacing = getResources().getDimensionPixelSize(R.dimen.image_thumbnail_spacing); mShowId = getArguments().getString(SHOW_ID); mSeason = getArguments().getInt(SEASON); mUseGridView = PreferenceManager.getDefaultSharedPreferences(mContext) .getString(TVSHOWS_COLLECTION_LAYOUT, getString(R.string.gridView)) .equals(getString(R.string.gridView)); LocalBroadcastManager.getInstance(mContext).registerReceiver(mBroadcastReceiver, new IntentFilter(LocalBroadcastUtils.UPDATE_TV_SHOW_EPISODES_OVERVIEW)); } private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { mEpisodeLoader.load(); showProgressBar(); } }; @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.episodes_overview, menu); int padding = MizLib.convertDpToPixels(getActivity(), 16); SwitchCompat switchCompat = (SwitchCompat) menu.findItem(R.id.switch_button).getActionView(); switchCompat.setChecked(mEpisodeLoader != null ? mEpisodeLoader.showAvailableFiles() : false); switchCompat.setText(R.string.choiceAvailableFiles); switchCompat.setSwitchPadding(padding); switchCompat.setPadding(0, 0, padding, 0); switchCompat.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { mEpisodeLoader.setShowAvailableFiles(isChecked); mEpisodeLoader.load(); showProgressBar(); } }); super.onCreateOptionsMenu(menu, inflater); } @Override public boolean onOptionsItemSelected(MenuItem item) { super.onOptionsItemSelected(item); switch (item.getItemId()) { case R.id.menuSortDesc: mEpisodeLoader.setSortType(TvShowEpisodeLoader.TvShowEpisodeSortType.DESCENDING); mEpisodeLoader.load(); showProgressBar(); break; case R.id.menuSortAsc: mEpisodeLoader.setSortType(TvShowEpisodeLoader.TvShowEpisodeSortType.ASCENDING); mEpisodeLoader.load(); showProgressBar(); break; case R.id.all_episodes: mEpisodeLoader.setWatchedFilter(TvShowEpisodeLoader.TvShowEpisodeWatchedFilter.ALL); mEpisodeLoader.load(); showProgressBar(); break; case R.id.watched: mEpisodeLoader.setWatchedFilter(TvShowEpisodeLoader.TvShowEpisodeWatchedFilter.WATCHED); mEpisodeLoader.load(); showProgressBar(); break; case R.id.unwatched: mEpisodeLoader.setWatchedFilter(TvShowEpisodeLoader.TvShowEpisodeWatchedFilter.UNWATCHED); mEpisodeLoader.load(); showProgressBar(); break; } return true; } @Override public void onDestroy() { super.onDestroy(); mBus.unregister(this); LocalBroadcastManager.getInstance(mContext).unregisterReceiver(mBroadcastReceiver); } @Subscribe public void refreshData(com.miz.mizuu.TvShowEpisode episode) { loadEpisodes(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.image_grid_fragment, container, false); } public void onViewCreated(View v, Bundle savedInstanceState) { super.onViewCreated(v, savedInstanceState); if (MizLib.isTablet(mContext) && !MizLib.isPortrait(mContext)) { v.findViewById(R.id.container).setBackgroundColor(Color.parseColor("#05FFFFFF")); } mAdapter = new ImageAdapter(mContext); mProgressBar = (ProgressBar) v.findViewById(R.id.progress); mGridView = (GridView) v.findViewById(R.id.gridView); mGridView.setColumnWidth(mImageThumbSize); mGridView.setChoiceMode(GridView.CHOICE_MODE_MULTIPLE_MODAL); mGridView.setEmptyView(v.findViewById(R.id.progress)); mGridView.setAdapter(mAdapter); if (mUseGridView) { // 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); mResizedWidth = (int) (((mGridView.getWidth() - (numColumns * mImageThumbSpacing)) / numColumns) * 1.1); // * 1.1 is a hack to make images look slightly less blurry mResizedHeight = (int) (mResizedWidth / 1.778); } } } }); } else { mGridView.setNumColumns(1); mAdapter.setNumColumns(1); } mGridView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { Intent i = new Intent(mContext, TvShowEpisodeDetails.class); i.putExtra(SHOW_ID, mShowId); i.putExtra("episode", mEpisodeLoader.getResults().get(arg2).getEpisode()); i.putExtra("season", mSeason); getActivity().startActivityForResult(i, 0); } }); mGridView.setOnItemLongClickListener(new OnItemLongClickListener() { @Override public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { mGridView.setItemChecked(position, true); return true; } }); mGridView.setMultiChoiceModeListener(new MultiChoiceModeListener() { @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { MenuInflater inflater = mode.getMenuInflater(); inflater.inflate(R.menu.episodes_contextual, menu); mContextualActionBarEnabled = true; return true; } @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { return true; } @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { switch (item.getItemId()) { case R.id.watched: changeWatchedStatus(true, new HashSet<Integer>(mCheckedEpisodes)); break; case R.id.unwatched: changeWatchedStatus(false, new HashSet<Integer>(mCheckedEpisodes)); break; case R.id.remove: removeSelectedEpisodes(new HashSet<Integer>(mCheckedEpisodes)); break; case R.id.identify: identify(new HashSet<Integer>(mCheckedEpisodes)); break; } mode.finish(); // Make the seasons grid refresh mBus.post(new com.miz.mizuu.TvShowEpisode()); return true; } @Override public void onDestroyActionMode(ActionMode mode) { mContextualActionBarEnabled = false; mCheckedEpisodes.clear(); } @Override public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) { if (checked) mCheckedEpisodes.add(mEpisodeLoader.getResults().get(position).getEpisode()); else mCheckedEpisodes.remove(mEpisodeLoader.getResults().get(position).getEpisode()); int count = mCheckedEpisodes.size(); mode.setTitle( count + " " + getResources().getQuantityString(R.plurals.episodes_selected, count, count)); // Nasty hack to update the selected items highlight... mAdapter.notifyDataSetChanged(); } }); // The layout has been created - let's load the data loadEpisodes(); } private void changeWatchedStatus(boolean watched, final Set<Integer> checkedEpisodes) { // Create and open database DbAdapterTvShowEpisodes db = MizuuApplication.getTvEpisodeDbAdapter(); // This ought to be done in the background, but performance is fairly decent for (int episode : checkedEpisodes) { db.setEpisodeWatchStatus(mShowId, MizLib.addIndexZero(mSeason), MizLib.addIndexZero(episode), watched); } if (MizLib.isOnline(mContext) && Trakt.hasTraktAccount(mContext)) syncWatchedStatusWithTrakt(checkedEpisodes, watched); loadEpisodes(); } private void identify(final Set<Integer> checkedEpisodes) { ArrayList<String> filepaths = new ArrayList<String>(); for (int episode : checkedEpisodes) { ArrayList<String> paths = MizuuApplication.getTvShowEpisodeMappingsDbAdapter() .getFilepathsForEpisode(mShowId, MizLib.addIndexZero(mSeason), MizLib.addIndexZero(episode)); for (String path : paths) filepaths.add(path); } Intent i = new Intent(getActivity(), IdentifyTvShowEpisode.class); i.putExtra("filepaths", filepaths); i.putExtra("showId", mShowId); i.putExtra("showTitle", MizuuApplication.getTvDbAdapter().getShowTitle(mShowId)); getActivity().startActivityForResult(i, 0); } private void syncWatchedStatusWithTrakt(final Set<Integer> checkedEpisodes, final boolean watched) { new com.miz.functions.AsyncTask<Void, Boolean, Boolean>() { private Set<Integer> mSelectedEpisodes; private List<TvShowEpisode> mEpisodes = new ArrayList<TvShowEpisode>(); @Override protected void onPreExecute() { mSelectedEpisodes = new HashSet<Integer>(checkedEpisodes); for (int episode : mSelectedEpisodes) { mEpisodes.add(new TvShowEpisode(mShowId, episode, mSeason)); } } @Override protected Boolean doInBackground(Void... params) { boolean result = Trakt.markEpisodeAsWatched(mShowId, mEpisodes, mContext, watched); if (!result) // Try again if it failed result = Trakt.markEpisodeAsWatched(mShowId, mEpisodes, mContext, watched); return result; } @Override protected void onPostExecute(Boolean result) { if (!result) Toast.makeText(mContext, R.string.sync_error, Toast.LENGTH_LONG).show(); } }.execute(); } private void removeSelectedEpisodes(final Set<Integer> selectedEpisodes) { // Get the Activity Context final Context activityContext = getActivity(); AlertDialog.Builder builder = new AlertDialog.Builder(activityContext); builder.setTitle(R.string.remove_selected_episodes); builder.setMessage(R.string.areYouSure); builder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // Go through all episodes and remove the selected ones for (int episode : selectedEpisodes) { TvShowDatabaseUtils.deleteEpisode(activityContext, mShowId, mSeason, episode); } // Check if we've removed all TV show episodes for the specific season if (MizuuApplication.getTvEpisodeDbAdapter().getEpisodeCountForSeason(mShowId, MizLib.addIndexZero(mSeason)) == 0) { // Update the TV show library LocalBroadcastUtils.updateTvShowLibrary(activityContext); // Finish the Activity getActivity().finish(); } else { // There's still episodes left, so re-load the TV show seasons loadEpisodes(); } } }); builder.setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.cancel(); } }); builder.show(); } private void loadEpisodes() { mEpisodeLoader = new TvShowEpisodeLoader(mContext, mShowId, mSeason, mCallback); mEpisodeLoader.load(); } private OnLoadCompletedCallback mCallback = new OnLoadCompletedCallback() { @Override public void onLoadCompleted() { mAdapter.notifyDataSetChanged(); } }; 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() { if (mEpisodeLoader != null) return mEpisodeLoader.getResults().size(); return 0; } @Override public boolean isEmpty() { return getCount() == 0 && !mLoading; } @Override public GridEpisode getItem(int position) { return mEpisodeLoader.getResults().get(position); } @Override public long getItemId(int position) { return position; } @Override public int getItemViewType(int position) { return 0; } @Override public int getViewTypeCount() { return 1; } @Override public View getView(final int position, View convertView, ViewGroup container) { final CoverItem holder; final GridEpisode episode = getItem(position); if (convertView == null) { if (mUseGridView) convertView = inflater.inflate(R.layout.grid_episode, container, false); else convertView = inflater.inflate(R.layout.list_episode, container, false); holder = new CoverItem(); holder.cover = (ImageView) convertView.findViewById(R.id.cover); holder.text = (TextView) convertView.findViewById(R.id.text); if (mUseGridView) holder.text.setSingleLine(true); holder.subtext = (TextView) convertView.findViewById(R.id.sub_text); if (mUseGridView) holder.subtext.setSingleLine(true); holder.highlight = (ImageView) convertView.findViewById(R.id.highlight); holder.text.setTypeface(TypefaceUtils.getRobotoMedium(mContext)); convertView.setTag(holder); } else { holder = (CoverItem) convertView.getTag(); } // Android's GridView is pretty stupid regarding selectors // so we have to highlight the selected view manually - yuck! if (mContextualActionBarEnabled) { if (mCheckedEpisodes.contains(episode.getEpisode())) { holder.highlight.setVisibility(View.VISIBLE); } else { holder.highlight.setVisibility(View.GONE); } } else { holder.highlight.setVisibility(View.GONE); } holder.text.setText(episode.getTitle()); if (mUseGridView) holder.subtext.setText(episode.getSubtitleText()); else holder.subtext.setText(episode.getSubtitleText() + "\n" + MizLib.getPrettyDatePrecise(mContext, episode.getAirDate())); if (mResizedWidth > 0) mPicasso.load(episode.getCover()).placeholder(R.color.card_background_dark) .error(R.drawable.nobackdrop).resize(mResizedWidth, mResizedHeight).config(mConfig) .into(holder.cover); else mPicasso.load(episode.getCover()).placeholder(R.color.card_background_dark) .error(R.drawable.nobackdrop).config(mConfig).into(holder.cover); return convertView; } @Override public void notifyDataSetChanged() { super.notifyDataSetChanged(); // Hide the progress bar once the data set has been changed hideProgressBar(); } public void setNumColumns(int numColumns) { mNumColumns = numColumns; } public int getNumColumns() { return mNumColumns; } } private void hideProgressBar() { mGridView.setVisibility(View.VISIBLE); mProgressBar.setVisibility(View.GONE); mLoading = false; } private void showProgressBar() { mGridView.setVisibility(View.GONE); mProgressBar.setVisibility(View.VISIBLE); mLoading = true; } }