Java tutorial
/* * Copyright 2013-2015 The GDG Frisbee Project * * 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 org.gdg.frisbee.android.event; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.support.customtabs.CustomTabsIntent; import android.support.v4.app.Fragment; import android.support.v4.content.ContextCompat; import android.support.v4.view.MenuItemCompat; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.ShareActionProvider; import android.text.Html; 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.widget.ImageView; import android.widget.TextView; import com.squareup.picasso.Picasso; import com.tasomaniac.android.widget.DelayedProgressBar; import org.gdg.frisbee.android.Const; import org.gdg.frisbee.android.R; import org.gdg.frisbee.android.api.Callback; import org.gdg.frisbee.android.api.GdgXHub; import org.gdg.frisbee.android.api.PlusApi; import org.gdg.frisbee.android.api.model.Chapter; import org.gdg.frisbee.android.api.model.Directory; import org.gdg.frisbee.android.api.model.EventFullDetails; import org.gdg.frisbee.android.api.model.plus.ImageInfo; import org.gdg.frisbee.android.app.App; import org.gdg.frisbee.android.cache.ModelCache; import org.gdg.frisbee.android.common.BaseFragment; import org.gdg.frisbee.android.utils.Utils; import org.joda.time.format.DateTimeFormat; import org.joda.time.format.DateTimeFormatter; import butterknife.BindView; public class EventOverviewFragment extends BaseFragment { @BindView(R.id.title) TextView mTitle; @BindView(R.id.date) TextView mDate; @BindView(R.id.start_time) TextView mStartTime; @BindView(R.id.event_description) TextView mEventDescription; @BindView(R.id.loading) DelayedProgressBar mProgressContainer; @BindView(R.id.group_logo) ImageView mGroupLogo; @BindView(R.id.container) View mContainer; private ModelCache modelCache; private PlusApi plusApi; private GdgXHub gdgXHub; private Picasso picasso; private boolean mLoading; private Directory mDirectory; private EventFullDetails mEvent; public static Fragment createfor(String eventId) { EventOverviewFragment fragment = new EventOverviewFragment(); Bundle args = new Bundle(); args.putString(Const.EXTRA_EVENT_ID, eventId); fragment.setArguments(args); return fragment; } @Override public void onAttach(Context context) { super.onAttach(context); modelCache = App.from(context).getModelCache(); plusApi = App.from(context).getPlusApi(); gdgXHub = App.from(context).getGdgXHub(); picasso = App.from(context).getPicasso(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) { View v = inflateView(inflater, R.layout.fragment_event_overview, parent); setHasOptionsMenu(true); return v; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); setIsLoading(true); } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); final String eventId = getArguments().getString(Const.EXTRA_EVENT_ID); gdgXHub.getEventDetail(eventId).enqueue(new Callback<EventFullDetails>() { @Override public void onSuccess(EventFullDetails eventFullDetails) { onEventDetailsLoaded(eventFullDetails); } @Override public void onError() { showError(R.string.server_error); } @Override public void onNetworkFailure(Throwable error) { showError(R.string.offline_alert); } }); } private void updateWithDetails(final EventFullDetails eventFullDetails) { mTitle.setText(eventFullDetails.getTitle()); final String eventUrl = eventFullDetails.getEventUrl(); if (eventUrl != null && !eventUrl.equals(getActivity().getIntent().getDataString())) { mTitle.setOnClickListener(new View.OnClickListener() { @Override public void onClick(final View v) { launchUrl(eventUrl); } }); } String about = eventFullDetails.getAbout(); if (about == null) { about = getString(R.string.no_description_available); } mEventDescription.setText(Html.fromHtml(about)); mStartTime.setText(getString(R.string.starting_at, formatTime(eventFullDetails))); mDate.setText(formatDate(eventFullDetails)); setIsLoading(false); } private String formatTime(EventFullDetails eventFullDetails) { DateTimeFormatter fmt = DateTimeFormat.shortTime(); return fmt.print(eventFullDetails.getStart()); } private String formatDate(EventFullDetails eventFullDetails) { DateTimeFormatter fmt = DateTimeFormat.fullDate(); // TODO check whether this is a multi day event return fmt.print(eventFullDetails.getStart()); } private void onEventDetailsLoaded(final EventFullDetails eventFullDetails) { if (getActivity() == null) { return; } if (getActivity() instanceof Callbacks) { ((Callbacks) getActivity()).onEventLoaded(eventFullDetails); } mEvent = eventFullDetails; getActivity().supportInvalidateOptionsMenu(); updateWithDetails(eventFullDetails); modelCache.getAsync(ModelCache.KEY_CHAPTER_LIST_HUB, new ModelCache.CacheListener() { @Override public void onGet(Object item) { mDirectory = (Directory) item; updateGroupDetails(mDirectory.getGroupById(eventFullDetails.getChapter())); } @Override public void onNotFound(String key) { if (Utils.isOnline(getActivity())) { gdgXHub.getDirectory().enqueue(new Callback<Directory>() { @Override public void onSuccess(Directory directory) { mDirectory = directory; updateGroupDetails(mDirectory.getGroupById(eventFullDetails.getChapter())); } @Override public void onError() { showError(R.string.fetch_chapters_failed); } @Override public void onNetworkFailure(Throwable error) { showError(R.string.offline_alert); } }); } else { showError(R.string.offline_alert); } } }); } private void updateGroupDetails(Chapter group) { if (getActivity() == null) { return; } loadChapterImage(group.getGplusId()); ((AppCompatActivity) getActivity()).getSupportActionBar().setTitle(group.getShortName()); } private void loadChapterImage(String gplusId) { plusApi.getImageInfo(gplusId).enqueue(new Callback<ImageInfo>() { @Override public void onSuccess(ImageInfo imageInfo) { if (isContextValid()) { String imageUrl = imageInfo.getImage().getUrl().replace("sz=50", "sz=196"); picasso.load(imageUrl).into(mGroupLogo); } } @Override public void onError() { if (isContextValid()) { mGroupLogo.setVisibility(View.INVISIBLE); } } @Override public void onNetworkFailure(Throwable error) { if (isContextValid()) { mGroupLogo.setVisibility(View.INVISIBLE); } } }); } private void setIsLoading(boolean isLoading) { if (isLoading == mLoading || getActivity() == null) { return; } mLoading = isLoading; if (isLoading) { mContainer.setVisibility(View.GONE); mProgressContainer.show(true); } else { mProgressContainer.hide(true, new Runnable() { @Override public void run() { if (mContainer != null) { mContainer.setAlpha(0.0f); mContainer.setVisibility(View.VISIBLE); mContainer.animate().alpha(1.0f); } } }); } } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { if (mEvent != null) { inflater.inflate(R.menu.event_menu, menu); MenuItem shareMenuItem = menu.findItem(R.id.share); if (mEvent.getEventUrl() != null) { ShareActionProvider mShareActionProvider = (ShareActionProvider) MenuItemCompat .getActionProvider(shareMenuItem); Intent shareIntent = new Intent(Intent.ACTION_SEND); shareIntent.setType("text/plain"); shareIntent.putExtra(Intent.EXTRA_TEXT, mEvent.getEventUrl()); if (mShareActionProvider != null) { mShareActionProvider.setShareIntent(shareIntent); } } else { shareMenuItem.setVisible(false); menu.findItem(R.id.view_event_url).setVisible(false); } } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.add_calendar: addEventToCalendar(); return true; case R.id.navigate_to: launchNavigation(); return true; case R.id.view_event_url: launchUrl(mEvent.getEventUrl()); return true; default: return false; } } private void launchNavigation() { Intent intent = new Intent(Intent.ACTION_VIEW); intent.setData(Uri.parse("geo:0,0?q=" + mEvent.getLocation())); if (Utils.canLaunch(getActivity(), intent)) { startActivity(intent); } } private void launchUrl(String eventUrl) { new CustomTabsIntent.Builder().setToolbarColor(ContextCompat.getColor(getContext(), R.color.theme_primary)) .setShowTitle(true).build().launchUrl(getActivity(), Uri.parse(eventUrl)); } private void addEventToCalendar() { Intent intent = new Intent(Intent.ACTION_EDIT); intent.setType("vnd.android.cursor.item/event"); intent.putExtra("beginTime", mEvent.getStart().getMillis()); intent.putExtra("endTime", mEvent.getEnd().getMillis()); intent.putExtra("title", mEvent.getTitle()); String location = mEvent.getLocation(); if (location != null) { intent.putExtra("eventLocation", location); } startActivity(intent); } public interface Callbacks { void onEventLoaded(EventFullDetails eventFullDetails); } }