【官方文档--App data and files（1）】Overview

原文：https://developer.android.google.cn/guide/topics/data

App data and files

Learn how to preserve your app and user data either as files on the device, in key-value pairs, in a database, or with other data types, and share data between other apps and devices. You can also add a backup service to let users store information in the cloud, sync it across devices, and recover it when they get a new device.

Documentation

• Data and file storage overview
• Save files on device storage
• Save key-value data
• Save data in a local database using Room
• Sharing simple data
• Sharing files
• Sharing files with NFC
• Printing files
• Content providers
• Open files using storage access framework

Videos

Additional resources

For more information about working with app data and files, consult the following resources.

Codelabs

• Keep Sensitive Data Safe and Private

单词积累

preserve：保存
sync it across devices：在设备之间同步