Java tutorial
/* * Copyright (c) 2016 Ha Duy Trung * * 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 io.github.hidroh.materialistic.appwidget; import android.annotation.TargetApi; import android.content.Context; import android.content.Intent; import android.os.Build; import android.support.v4.content.ContextCompat; import android.text.SpannableString; import android.text.SpannableStringBuilder; import android.text.Spanned; import android.text.TextUtils; import android.text.style.ForegroundColorSpan; import android.widget.RemoteViews; import android.widget.RemoteViewsService; import java.util.Locale; import javax.inject.Inject; import javax.inject.Named; import io.github.hidroh.materialistic.ActivityModule; import io.github.hidroh.materialistic.AppUtils; import io.github.hidroh.materialistic.Application; import io.github.hidroh.materialistic.R; import io.github.hidroh.materialistic.data.Item; import io.github.hidroh.materialistic.data.ItemManager; @TargetApi(Build.VERSION_CODES.HONEYCOMB) public class WidgetService extends RemoteViewsService { static final String EXTRA_SECTION = "extra:section"; static final String EXTRA_LIGHT_THEME = "extra:lightTheme"; static final String EXTRA_CUSTOM_QUERY = "extra:customQuery"; @Inject @Named(ActivityModule.HN) ItemManager mItemManager; @Inject @Named(ActivityModule.ALGOLIA) ItemManager mSearchManager; @Override public void onCreate() { super.onCreate(); ((Application) getApplication()).getApplicationGraph().plus(new ActivityModule(this)).inject(this); } @Override public RemoteViewsFactory onGetViewFactory(Intent intent) { return new ListRemoteViewsFactory(getApplicationContext(), intent.getBooleanExtra(EXTRA_CUSTOM_QUERY, false) ? mSearchManager : mItemManager, intent.getStringExtra(EXTRA_SECTION), intent.getBooleanExtra(EXTRA_LIGHT_THEME, false)); } static class ListRemoteViewsFactory implements RemoteViewsFactory { private static final String SCORE = "%1$dp"; private static final String COMMENT = "%1$dc"; private static final String SUBTITLE_SEPARATOR = " - "; private static final int MAX_ITEMS = 10; private final Context mContext; private final ItemManager mItemManager; private final String mFilter; private final boolean mLightTheme; private final int mHotThreshold; private Item[] mItems; ListRemoteViewsFactory(Context context, ItemManager itemManager, String section, boolean lightTheme) { mContext = context; mItemManager = itemManager; mLightTheme = lightTheme; if (TextUtils.equals(section, context.getString(R.string.pref_widget_section_value_best))) { mFilter = ItemManager.BEST_FETCH_MODE; mHotThreshold = AppUtils.HOT_THRESHOLD_HIGH; } else if (TextUtils.equals(section, context.getString(R.string.pref_widget_section_value_top))) { mFilter = ItemManager.TOP_FETCH_MODE; mHotThreshold = AppUtils.HOT_THRESHOLD_NORMAL; } else { mFilter = section; mHotThreshold = AppUtils.HOT_THRESHOLD_NORMAL; } } @Override public void onCreate() { // no op } @Override public void onDataSetChanged() { mItems = mItemManager.getStories(mFilter, ItemManager.MODE_NETWORK); } @Override public void onDestroy() { // no op } @Override public int getCount() { return mItems != null ? Math.min(mItems.length, MAX_ITEMS) : 0; } @Override public RemoteViews getViewAt(int position) { RemoteViews remoteViews = new RemoteViews(mContext.getPackageName(), mLightTheme ? R.layout.item_widget_light : R.layout.item_widget); Item item = getItem(position); if (item == null) { return remoteViews; } if (!isItemAvailable(item)) { Item remoteItem = mItemManager.getItem(item.getId(), ItemManager.MODE_NETWORK); if (remoteItem != null) { item.populate(remoteItem); } else { return remoteViews; } } remoteViews.setTextViewText(R.id.title, item.getDisplayedTitle()); remoteViews.setTextViewText(R.id.score, new SpannableStringBuilder() .append(getSpan(item.getScore(), SCORE, mHotThreshold * AppUtils.HOT_FACTOR)) .append(SUBTITLE_SEPARATOR).append(getSpan(item.getKidCount(), COMMENT, mHotThreshold))); remoteViews.setOnClickFillInIntent(R.id.item_view, new Intent().setData(AppUtils.createItemUri(item.getId()))); return remoteViews; } @Override public RemoteViews getLoadingView() { return new RemoteViews(mContext.getPackageName(), R.layout.item_widget); } @Override public int getViewTypeCount() { return 1; } @Override public long getItemId(int position) { Item item = getItem(position); return item != null ? item.getLongId() : 0L; } @Override public boolean hasStableIds() { return true; } private Item getItem(int position) { return mItems != null && position < mItems.length ? mItems[position] : null; } private boolean isItemAvailable(Item item) { return item != null && item.getLocalRevision() > 0; } private SpannableString getSpan(int value, String format, int hotThreshold) { String text = String.format(Locale.US, format, value); SpannableString spannable = new SpannableString(text); if (value >= hotThreshold) { spannable.setSpan(new ForegroundColorSpan(ContextCompat.getColor(mContext, R.color.orange500)), 0, text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); } return spannable; } } }