FMDatabase - 使用未解析的标识符＆＃39; FMDatabase＆＃39;

Question

我完全用Swift重写了一个应用程序。刚开始使用我使用FMDB的数据库。我从＆＃34; iOS8 App Development Essentials＆＃34;中获取了一些相同的代码。当我编译该行时：

let locationsDB = FMDatabase(path: databasePath as String)

它让我使用未解析的标识符＆＃34; FMDatabase＆＃34;错误。这部分代码如下：

let filemgr = NSFileManager.defaultManager()
        let dirPaths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
        let docsDir = dirPaths[0] as! String
        databasePath = docsDir.stringByAppendingPathComponent("locations.db")

        if !filemgr.fileExistsAtPath(databasePath as String) {
            let locationsDB = FMDatabase(path: databasePath as String)

            etc...

有什么想法吗？

Answer 1

我认为你不是阅读整个数据库页面。他们也提供了关于“ iOS9 App Development Essentials”的问题的解决方案......

STEP - 1 : Go to xcode menu --> Source Control --> Check Out

STEP - 2 : Manually type this URL("No Reputation that why i can't add link") like as screenshot.

STEP - 3 : Select Master and the click Next.

STEP - 4 : Name it And Save It :).

STEP - 5 : Create.

STEP - 6 : Create New Group on your existing Project Folder.

STEP - 7 : Select All Files like as ScreenShot and Drag it on to the New Group that was created on existing project folder.

STEP - 8 : click CREATE BRIDGING HEADER.

STEP - 9 : Import the FMDB.h (#import "FMDB.h") file into your Swift file using YOURPROJECT-Bridging-Header.

STEP - 10 : At finally, You can use all functions on imported Objective C header Files. Please refer the screenshots below... happy coding. ta ta!! :)

Answer 2

我添加了一个解决方案：

var databasePath:String!

位于ViewController的顶部，因为错误表明未声明databasePath。

结果我将它声明为string类型的变量，可以为null（！）。就我而言，它运作得很好。