Content providers can help an application manage access to data stored by itself, stored by other apps, and provide a way to share data with other apps.
They encapsulate the data, and provide mechanisms for defining data security.
Content providers are the standard interface that connects data in one process with code running in another process.
Implementing a content provider has many advantages.
If you are making use of any of these classes you also need to implement a content provider in your application.
The Android framework includes content providers that manage data such as audio, video, images, and personal contact information.
You can see some of them listed in the reference documentation for the android.provider package.
With some restrictions, these providers are accessible to any Android application.
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