1 /* 2 * Copyright (C) 2011 Google Inc. 3 * Licensed to The Android Open Source Project. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package com.android.ex.photo.loaders; 19 20 import android.content.Context; 21 import android.database.Cursor; 22 import android.net.Uri; 23 import android.support.v4.content.CursorLoader; 24 25 import com.android.ex.photo.provider.PhotoContract; 26 27 /** 28 * Loader for a set of photo IDs. 29 */ 30 public class PhotoPagerLoader extends CursorLoader { 31 private final Uri mPhotosUri; 32 private final String[] mProjection; 33 34 public PhotoPagerLoader( 35 Context context, Uri photosUri, String[] projection) { 36 super(context); 37 mPhotosUri = photosUri; 38 mProjection = projection != null ? projection : PhotoContract.PhotoQuery.PROJECTION; 39 } 40 41 @Override 42 public Cursor loadInBackground() { 43 Cursor returnCursor = null; 44 45 final Uri loaderUri = mPhotosUri.buildUpon().appendQueryParameter( 46 PhotoContract.ContentTypeParameters.CONTENT_TYPE, "image/").build(); 47 setUri(loaderUri); 48 setProjection(mProjection); 49 returnCursor = super.loadInBackground(); 50 51 return returnCursor; 52 } 53 } 54
