Intro to ContentProviders
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The Android operating system uses content providers to facilitate access to shared data such as media files, contacts and calendar information. This article introduces the ContentProvider class, and provides two examples of how to use it.
A ContentProvider encapsulates a data repository and provides an API to access
it. The provider exists as part of an Android application that usually also
provides a UI for displaying/managing the data. The key benefit of using a content
provider is enabling other applications to easily access the encapsulated data
using a provider client object (called a ContentResolver). Together, a content
provider and content resolver offer a consistent inter-application API for data
access that is simple to build and consume. Any application can choose to use
ContentProviders to manage data internally and also to expose it to other applications.
ContentProvider is also required for your application to provide custom search suggestions, or if you want to provide the ability to copy complex data from your application to paste into other applications. This document shows how to access and build
ContentProviders with Xamarin.Android.
The document structure is as follows:
How it works – An overview of what the
designed for and how it works.
Consuming a Content Provider – An example accessing the Contacts list.
Using ContentProvider to share data – Writing and
ContentProvider in the same application.
ContentProviders and the cursors that operate on their data are often
used to populate ListViews. Refer to the
ListViews and Adapters guide
for more information on how to use those classes.
ContentProviders exposed by Android (or other applications) are an
easy way to include data from other sources in your application. They allow you
to access and present data such as the Contacts list, photos or calendar events
from within your application, and let the user interact with that data.
ContentProviders are a convenient way to package your data for use
inside your own app, or for use by other applications (including special uses like custom search and copy/paste).
This document provides some simple examples of consuming and writing