Android programming uses the content provider method for storage

This article describes the method of storing content provider in Android programming. Share with you for your reference, as follows:

The main function of the content provider is to share data externally. If the data is shared externally through the content provider, other applications can query the data from the content provider, and can update, delete and add data. If the file operation mode is adopted to share data externally, The data access methods can not be unified due to different storage methods. The API for sharing files with different storage methods is different. If content providers are used to share data externally, the data access methods will be unified. Use a unified API to access shared data.

To create a content provider

1. Creating a content provider needs to inherit android.content.contentprovider

2. Configure in the list file:

<!-- Android: Name: specify the class name of the content provider, Android: Authorities: call the content.. name, choose -- > < provider Android: name = ". Personprovider" Android: authorities = "CN. Test. Providers. Personprovider" / >

Main methods of ContentProvider class

Example:

The content provider class implements the addition, deletion, modification and query of data

Access in other works:

I hope this article will help you in Android programming.