Content Provider Introduction

Content Provider is a universal interface mechanism that allows data sharing between applications. By abstracting the underlying data source, content provider reduces the coupling between the application layer and the data layer, making the data source of the application unknown.

 

Content provider has full permission control and can be accessed through a simple Uri. Shared data is obtained through query and can also be written. Therefore, an application with proper permissions can add, delete, and update data of any other application, including some local Android databases.

 

Many local databases are visible and even accessible to third-party applications in the content provider mode. This means that once your application has been granted permissions, you can access contact management, media players, and other local databases on the phone.

 

Publish your data as a content provider so that you (and other developers) can use and expand the data in new applications.