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.chapter; import android.net.Uri; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.content.ContextCompat; import android.text.Html; import android.text.Spanned; import android.text.SpannedString; import android.text.TextUtils; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ScrollView; import android.widget.TextView; 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.model.plus.Person; import org.gdg.frisbee.android.api.model.plus.Urls; 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.gdg.frisbee.android.view.BitmapBorderTransformation; import org.joda.time.DateTime; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import java.util.List; import butterknife.BindView; import timber.log.Timber; public class InfoFragment extends BaseFragment { @BindView(R.id.about) TextView mAbout; @BindView(R.id.tagline) TextView mTagline; @BindView(R.id.organizer_box) LinearLayout mOrganizerBox; @BindView(R.id.resources_box) LinearLayout mResourcesBox; @BindView(R.id.loading) DelayedProgressBar mProgressContainer; @BindView(R.id.container) ScrollView mContainer; private boolean mLoading = false; private LayoutInflater mInflater; private String chapterPlusId; public static InfoFragment newInstance(String plusId) { InfoFragment fragment = new InfoFragment(); Bundle arguments = new Bundle(); arguments.putString(Const.EXTRA_PLUS_ID, plusId); fragment.setArguments(arguments); return fragment; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); mInflater = LayoutInflater.from(getActivity()); setIsLoading(true); chapterPlusId = getArguments().getString(Const.EXTRA_PLUS_ID); final boolean online = Utils.isOnline(getActivity()); App.getInstance().getModelCache().getAsync(Const.CACHE_KEY_PERSON + chapterPlusId, online, new ModelCache.CacheListener() { @Override public void onGet(Object item) { updateUIFrom((Person) item, online); } @Override public void onNotFound(String key) { if (online) { App.getInstance().getPlusApi().getPerson(chapterPlusId).enqueue(new Callback<Person>() { @Override public void success(Person chapter) { putPersonInCache(chapterPlusId, chapter); updateUIFrom(chapter, true); } @Override public void failure(Throwable error) { setIsLoading(false); } @Override public void networkFailure(Throwable error) { setIsLoading(false); } }); } else { showError(R.string.offline_alert); setIsLoading(false); } } }); } void updateUIFrom(Person chapter, boolean online) { if (getActivity() != null) { updateChapterUIFrom(chapter); addOrganizers(chapter, online); } } private void updateChapterUIFrom(Person chapter) { if (mTagline != null) { mTagline.setText(chapter.getTagline()); } if (mAbout != null) { mAbout.setText(getAboutText(chapter)); } } private Spanned getAboutText(Person person) { String aboutText = person.getAboutMe(); if (aboutText == null) { return SpannedString.valueOf(""); } return Html.fromHtml(aboutText); } private void addOrganizers(Person cachedChapter, boolean online) { List<Urls> urls = cachedChapter.getUrls(); if (urls != null) { for (int chapterIndex = 0, size = urls.size(); chapterIndex < size; chapterIndex++) { Urls url = urls.get(chapterIndex); if (isNonCommunityPlusUrl(url)) { String org = url.getValue(); try { String id = getGPlusIdFromPersonUrl(url); addOrganizerAsync(id, online); } catch (Exception ex) { if (isContextValid()) { addUrlToUI(url); Timber.w(ex, "Could not parse organizer: %s", org); } } } else { addUrlToUI(url); } } } setIsLoading(false); } private boolean isNonCommunityPlusUrl(Urls url) { return url.getValue().contains("plus.google.com/") && !url.getValue().contains("communities"); } private void addUrlToUI(Urls url) { TextView tv = (TextView) mInflater.inflate(R.layout.list_resource_item, (ViewGroup) getView(), false); tv.setText(Html.fromHtml("<a href='" + url.getValue() + "'>" + url.getLabel() + "</a>")); mResourcesBox.addView(tv); } private void addOrganizerAsync(final String gplusId, final boolean online) { App.getInstance().getModelCache().getAsync(Const.CACHE_KEY_PERSON + gplusId, online, new ModelCache.CacheListener() { @Override public void onGet(Object item) { addOrganizerToUI((Person) item); } @Override public void onNotFound(String key) { if (online) { App.getInstance().getPlusApi().getPerson(gplusId).enqueue(new Callback<Person>() { @Override public void success(Person organizer) { putPersonInCache(gplusId, organizer); addOrganizerToUI(organizer); } @Override public void failure(Throwable error) { addUnknownOrganizerToUI(); } @Override public void networkFailure(Throwable error) { addUnknownOrganizerToUI(); } }); } else { addUnknownOrganizerToUI(); } } }); } private void addOrganizerToUI(final Person organizer) { if (organizer == null) { addUnknownOrganizerToUI(); return; } View v = createOrganizerView(organizer); if (v != null) { v.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { String url = organizer.getUrl(); if (!TextUtils.isEmpty(url)) { startActivity(Utils.createExternalIntent(getActivity(), Uri.parse(url))); } } }); if (mOrganizerBox != null) { mOrganizerBox.addView(v); } } } @Nullable private View createOrganizerView(Person person) { if (!isContextValid()) { return null; } View convertView = mInflater.inflate(R.layout.list_organizer_item, (ViewGroup) getView(), false); ImageView picture = (ImageView) convertView.findViewById(R.id.icon); if (person.getImage() != null) { App.getInstance().getPicasso().load(person.getImage().getUrl()) .transform(new BitmapBorderTransformation(0, getResources().getDimensionPixelSize(R.dimen.organizer_icon_size) / 2, ContextCompat.getColor(getContext(), R.color.white))) .placeholder(R.drawable.ic_no_avatar).into(picture); } TextView title = (TextView) convertView.findViewById(R.id.title); title.setText(person.getDisplayName()); return convertView; } private void addUnknownOrganizerToUI() { Timber.d("null person"); View v = getUnknownOrganizerView(); if (mOrganizerBox != null) { mOrganizerBox.addView(v); } } private View getUnknownOrganizerView() { View convertView = mInflater.inflate(R.layout.list_organizer_item, (ViewGroup) getView(), false); ImageView picture = (ImageView) convertView.findViewById(R.id.icon); picture.setImageResource(R.drawable.ic_no_avatar); TextView title = (TextView) convertView.findViewById(R.id.title); title.setText(R.string.name_not_known); return convertView; } private void putPersonInCache(String plusId, Person person) { App.getInstance().getModelCache().putAsync(Const.CACHE_KEY_PERSON + plusId, person, DateTime.now().plusDays(1), null); } private String getGPlusIdFromPersonUrl(Urls personUrl) { if (personUrl.getValue().contains("+")) { try { return "+" + URLDecoder .decode(personUrl.getValue().replace("plus.google.com/", "").replace("posts", "") .replace("/", "").replace("about", "").replace("u1", "").replace("u0", "") .replace("https:", "").replace("http:", "").replace(chapterPlusId, ""), "UTF-8") .trim(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); return personUrl.getValue(); } } else { return personUrl.getValue().replace("plus.google.com/", "").replace("posts", "").replace("/", "") .replace("about", "").replace("u1", "").replace("u0", "").replace("https:", "") .replace("http:", "").replace(chapterPlusId, "").replaceAll("[^\\d.]", "").substring(0, 21); } } 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 View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflateView(inflater, R.layout.fragment_chapter_info, container); } }