v811_spc009/developers/samples/android/content/documentsUi/ContentProviderPaging/kotlinApp

Android ContentProviderPaging Sample (Kotlin)

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 and DocumentsProvider 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.

Pre-requisites

• Android SDK 25
• Android Build Tools v25.0.3
• Android Support Repository

Screenshots

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.