1 2 Android ContentProviderPaging Sample 3 =================================== 4 5 This sample demonstrates how to use the ContentProvider with paging support introduced 6 in Android O. The ContentProvider now accepts additional arguments for the offset and 7 the limit in the query method to support paging instead of fetching all the data in 8 a single query method call. 9 10 Introduction 11 ------------ 12 13 [ContentProvider][1] and [DocumentsProvider][2] now supports paging instead of fetching the all 14 data at once. 15 16 Starting from Android O, ContentProvider#query(Uri, String[], Bundle, CancellationSignal) and 17 DocumentsProvider#query(Uri, String[], Bundle, CancellationSignal) methods are introduced. 18 The Bundle accepts the keys for ContentResolver.QUERY_ARG_OFFSET as an starting offset and 19 ContentResolver.QUERY_ARG_LIMIT as the number of items included in the returned Cursor object. 20 21 Similarly, the returned Cursor object now has a Bundle object obtained by Cursor#getExtras(). 22 The Bundle is able to include data such as the total size of the underlying data set. 23 24 [1]: https://developer.android.com/reference/android/content/ContentProvider.html 25 [2]: https://developer.android.com/reference/android/provider/DocumentsProvider.html 26 27 Pre-requisites 28 -------------- 29 30 - Android SDK 27 31 - Android Build Tools v27.0.2 32 - Android Support Repository 33 34 Screenshots 35 ------------- 36 37 <img src="screenshots/screenshot-1.png" height="400" alt="Screenshot"/> 38 39 Getting Started 40 --------------- 41 42 This sample uses the Gradle build system. To build this project, use the 43 "gradlew build" command or use "Import Project" in Android Studio. 44 45 Support 46 ------- 47 48 - Google+ Community: https://plus.google.com/communities/105153134372062985968 49 - Stack Overflow: http://stackoverflow.com/questions/tagged/android 50 51 If you've found an error in this sample, please file an issue: 52 https://github.com/googlesamples/android-ContentProviderPaging 53 54 Patches are encouraged, and may be submitted by forking this project and 55 submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details. 56 57 License 58 ------- 59 60 Copyright 2017 The Android Open Source Project, Inc. 61 62 Licensed to the Apache Software Foundation (ASF) under one or more contributor 63 license agreements. See the NOTICE file distributed with this work for 64 additional information regarding copyright ownership. The ASF licenses this 65 file to you under the Apache License, Version 2.0 (the "License"); you may not 66 use this file except in compliance with the License. You may obtain a copy of 67 the License at 68 69 http://www.apache.org/licenses/LICENSE-2.0 70 71 Unless required by applicable law or agreed to in writing, software 72 distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 73 WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 74 License for the specific language governing permissions and limitations under 75 the License. 76
