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README.md

      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