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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.widgetdata;
     18 
     19 import android.appwidget.AppWidgetManager;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.database.Cursor;
     23 import android.os.Bundle;
     24 import android.widget.RemoteViews;
     25 import android.widget.RemoteViewsService;
     26 
     27 /**
     28  * This is the service that provides the factory to be bound to the collection service.
     29  */
     30 public class WeatherWidgetService extends RemoteViewsService {
     31     @Override
     32     public RemoteViewsFactory onGetViewFactory(Intent intent) {
     33         return new StackRemoteViewsFactory(this.getApplicationContext(), intent);
     34     }
     35 }
     36 
     37 /**
     38  * This is the factory that will provide data to the collection widget.
     39  */
     40 class StackRemoteViewsFactory implements RemoteViewsService.RemoteViewsFactory {
     41     private Context mContext;
     42     private Cursor mCursor;
     43     private int mAppWidgetId;
     44 
     45     public StackRemoteViewsFactory(Context context, Intent intent) {
     46         mContext = context;
     47         mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
     48                 AppWidgetManager.INVALID_APPWIDGET_ID);
     49     }
     50 
     51     public void onCreate() {
     52         // Since we reload the cursor in onDataSetChanged() which gets called immediately after
     53         // onCreate(), we do nothing here.
     54     }
     55 
     56     public void onDestroy() {
     57         if (mCursor != null) {
     58             mCursor.close();
     59         }
     60     }
     61 
     62     public int getCount() {
     63         return mCursor.getCount();
     64     }
     65 
     66     public RemoteViews getViewAt(int position) {
     67         // Get the data for this position from the content provider
     68         String day = "Unknown Day";
     69         int temp = 0;
     70         if (mCursor.moveToPosition(position)) {
     71             final int dayColIndex = mCursor.getColumnIndex(WeatherDataProvider.Columns.DAY);
     72             final int tempColIndex = mCursor.getColumnIndex(
     73                     WeatherDataProvider.Columns.TEMPERATURE);
     74             day = mCursor.getString(dayColIndex);
     75             temp = mCursor.getInt(tempColIndex);
     76         }
     77 
     78         // Return a proper item with the proper day and temperature
     79         final String formatStr = mContext.getResources().getString(R.string.item_format_string);
     80         final int itemId = R.layout.widget_item;
     81         RemoteViews rv = new RemoteViews(mContext.getPackageName(), itemId);
     82         rv.setTextViewText(R.id.widget_item, String.format(formatStr, temp, day));
     83 
     84         // Set the click intent so that we can handle it and show a toast message
     85         final Intent fillInIntent = new Intent();
     86         final Bundle extras = new Bundle();
     87         extras.putString(WeatherWidgetProvider.EXTRA_DAY_ID, day);
     88         fillInIntent.putExtras(extras);
     89         rv.setOnClickFillInIntent(R.id.widget_item, fillInIntent);
     90 
     91         return rv;
     92     }
     93     public RemoteViews getLoadingView() {
     94         // We aren't going to return a default loading view in this sample
     95         return null;
     96     }
     97 
     98     public int getViewTypeCount() {
     99         // Technically, we have two types of views (the dark and light background views)
    100         return 2;
    101     }
    102 
    103     public long getItemId(int position) {
    104         return position;
    105     }
    106 
    107     public boolean hasStableIds() {
    108         return true;
    109     }
    110 
    111     public void onDataSetChanged() {
    112         // Refresh the cursor
    113         if (mCursor != null) {
    114             mCursor.close();
    115         }
    116         mCursor = mContext.getContentResolver().query(WeatherDataProvider.CONTENT_URI, null, null,
    117                 null, null);
    118     }
    119 }
    120