| |
| Android ContentProviderPaging Sample |
| =================================== |
| |
| This sample demonstrates how to use the ContentProvider with paging support introduced |
| in Android O. The ContentProvider now accepts additional arguments for the offset and |
| the limit in the query method to support paging instead of fetching all the data in |
| a single query method call. |
| |
| Introduction |
| ------------ |
| |
| [ContentProvider][1] and [DocumentsProvider][2] now supports paging instead of fetching the all |
| data at once. |
| |
| Starting from Android O, ContentProvider#query(Uri, String[], Bundle, CancellationSignal) and |
| DocumentsProvider#query(Uri, String[], Bundle, CancellationSignal) methods are introduced. |
| The Bundle accepts the keys for ContentResolver.QUERY_ARG_OFFSET as an starting offset and |
| ContentResolver.QUERY_ARG_LIMIT as the number of items included in the returned Cursor object. |
| |
| Similarly, the returned Cursor object now has a Bundle object obtained by Cursor#getExtras(). |
| The Bundle is able to include data such as the total size of the underlying data set. |
| |
| [1]: https://developer.android.com/reference/android/content/ContentProvider.html |
| [2]: https://developer.android.com/reference/android/provider/DocumentsProvider.html |
| |
| Pre-requisites |
| -------------- |
| |
| - Android SDK 27 |
| - Android Build Tools v27.0.2 |
| - Android Support Repository |
| |
| Screenshots |
| ------------- |
| |
| <img src="screenshots/screenshot-1.png" height="400" alt="Screenshot"/> |
| |
| Getting Started |
| --------------- |
| |
| This sample uses the Gradle build system. To build this project, use the |
| "gradlew build" command or use "Import Project" in Android Studio. |
| |
| Support |
| ------- |
| |
| - Google+ Community: https://plus.google.com/communities/105153134372062985968 |
| - Stack Overflow: http://stackoverflow.com/questions/tagged/android |
| |
| If you've found an error in this sample, please file an issue: |
| https://github.com/googlesamples/android-ContentProviderPaging |
| |
| Patches are encouraged, and may be submitted by forking this project and |
| submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details. |
| |
| License |
| ------- |
| |
| Copyright 2017 The Android Open Source Project, Inc. |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more contributor |
| license agreements. See the NOTICE file distributed with this work for |
| additional information regarding copyright ownership. The ASF licenses this |
| file to you 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. |
