在iPhone上是否会默认备份复制到扩展名的Document文件夹中的文件？

Question

我正在为iOS 8编写一个键盘扩展。第一次启动键盘时，会将一个sqlite数据库从捆绑包复制到Document文件夹中(该文件不存在以前的副本)：

NSString *docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *dbPath = [docPath stringByAppendingPathComponent:@"work.sqlite3"];
NSString *bundlePath = [[NSBundle mainBundle] pathForResource:@"default" 
                                                       ofType: @"sqlite3"];
[[NSFileManager defaultManager] copyItemAtPath:bundlePath 
                                        toPath:dbPath error:nil];

如果用户将来将此iPhone的备份恢复到新的iPhone，work.sqlite3文件是否会恢复到新的iPhone中？

Answer 1

不能将文件写入应用程序的捆绑包文件夹

Answer 2

代替

NSString *docPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

使用

func getTheFilePath() -> String
    {
        var url = NSFileManager.defaultManager().containerURLForSecurityApplicationGroupIdentifier("group.groupBundleID") as NSURL?
        var path = url?.absoluteString?.stringByAppendingPathComponent("work.sqlite3") as String?
        path = path!.stringByReplacingOccurrencesOfString("file:", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)

        return path!
    }