在此处使用答案，您可以获得一个.db File对象形式对数据库的引用.

Using the answer here, you can get a reference to your database in the form of a .db File object.

final String inFileName = "/data/data/<your.app.package>/databases/foo.db";
File dbFile = new File(inFileName);

一旦有了这个，就可以使用 Dropbox Sync API .

Once you have this, it's easy to read/write to a user's Dropbox using the Dropbox Sync API.

• 备份:使用 writeFromExistingFile()将此本地File写入Dropbox目录
• 还原:使用

• Backup: Use writeFromExistingFile() to write this local File to the Dropbox directory
• Restore: Use getReadStream() to get a FileInputStream that can write to the appropriate local path where your .db file goes.