blocks|key|4615806|text|最新的建议是对文件和目录使用NSURL，而不是基于NSString的路径：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4615807|​|4615808|📷|atomic|offset|length|4615809|4615810|因此，要以NSURL的形式获取应用程序的文档目录：|4615811|func+databaseURL()+->+NSURL?+{

++++let+fileManager+=+NSFileManager.defaultManager()

++++let+urls+=+fileManager.URLsForDirectory(.DocumentDirectory,+inDomains:+.UserDomainMask)

++++if+let+documentDirectory:+NSURL+=+urls.first+as?+NSURL+{
++++++++//+This+is+where+the+database+should+be+in+the+documents+directory
++++++++let+finalDatabaseURL+=+documentDirectory.URLByAppendingPathComponent("items.db")

++++++++if+finalDatabaseURL.checkResourceIsReachableAndReturnError(nil)+{
++++++++++++//+The+file+already+exists,+so+just+return+the+URL
++++++++++++return+finalDatabaseURL
++++++++}+else+{
++++++++++++//+Copy+the+initial+file+from+the+application+bundle+to+the+documents+directory
++++++++++++if+let+bundleURL+=+NSBundle.mainBundle().URLForResource("items",+withExtension:+"db")+{
++++++++++++++++let+success+=+fileManager.copyItemAtURL(bundleURL,+toURL:+finalDatabaseURL,+error:+nil)
++++++++++++++++if+success+{
++++++++++++++++++++return+finalDatabaseURL
++++++++++++++++}+else+{
++++++++++++++++++++println("Couldn't+copy+file+to+final+location!")
++++++++++++++++}
++++++++++++}+else+{
++++++++++++++++println("Couldn't+find+initial+database+in+the+bundle!")
++++++++++++}
++++++++}
++++}+else+{
++++++++println("Couldn't+get+documents+directory!")
++++}

++++return+nil
}|code-block|syntax|javascript|4615812|这有基本的错误处理，因为这在某种程度上取决于您的应用程序在这种情况下将做什么。但它使用文件URL和更现代的api来返回数据库URL，如果初始版本不存在，则将其复制到捆绑包之外，如果出现错误，则返回nil。|4615813|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/02fba54182f0ad0b0d4522a790804ca4.png|imageAlt^0|0|0|0|1|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|12|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|13|8|@]|9|@$G|14|H|15|1|16]]|A|$]]|$1|I|3|C|5|6|7|17|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|18|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|19|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|1A|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z|10|-4]]]]

The modern recommendation is to use NSURLs for files and directories instead of NSString based paths:

<img src="https://i.stack.imgur.com/ymPwO.png" alt="enter image description here">

So to get the Document directory for the app as an NSURL:

<pre><code>func databaseURL() -&gt; NSURL? {

 let fileManager = NSFileManager.defaultManager()

 let urls = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)

 if let documentDirectory: NSURL = urls.first as? NSURL {
 // This is where the database should be in the documents directory
 let finalDatabaseURL = documentDirectory.URLByAppendingPathComponent("items.db")

 if finalDatabaseURL.checkResourceIsReachableAndReturnError(nil) {
 // The file already exists, so just return the URL
 return finalDatabaseURL
 } else {
 // Copy the initial file from the application bundle to the documents directory
 if let bundleURL = NSBundle.mainBundle().URLForResource("items", withExtension: "db") {
 let success = fileManager.copyItemAtURL(bundleURL, toURL: finalDatabaseURL, error: nil)
 if success {
 return finalDatabaseURL
 } else {
 println("Couldn't copy file to final location!")
 }
 } else {
 println("Couldn't find initial database in the bundle!")
 }
 }
 } else {
 println("Couldn't get documents directory!")
 }

 return nil
}
</code></pre>

This has rudimentary error handling, as that sort of depends on what your application will do in such cases. But this uses file URLs and a more modern api to return the database URL, copying the initial version out of the bundle if it does not already exist, or a nil in case of error.

blocks|key|109639|text|将此行复制并粘贴到App+delegate中，如下所示打印路径|type|unstyled|depth|inlineStyleRanges|entityRanges|data|109640|func+application(_+application:+UIApplication,+didFinishLaunchingWithOptions+launchOptions:+[UIApplication.LaunchOptionsKey:+Any]?)+->+Bool+{
++++++++//+Override+point+for+customization+after+application+launch.
++++++++print(NSSearchPathForDirectoriesInDomains(.documentDirectory,+.userDomainMask,+true).last!+as+String)
++++++++return+true
++++}|code-block|syntax|javascript|109641|复制路径并将其粘贴到finder中的go+To+Folder中，方法是右键单击它，然后输入|109642|📷|atomic|offset|length|109643|​|109644|在Xcode中打开文件|109645|109646|109647|109648|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/7f0cd748e58da0dd51b059f369017f0d.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/1478068792f735b009d1ef5b16dd96ef.png^0|0|0|0|0|1|0|0|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|16|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|17|8|@]|9|@]|A|$]]|$1|I|3|J|5|K|7|18|8|@]|9|@$L|19|M|1A|1|1B]]|A|$]]|$1|N|3|O|5|6|7|1C|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1D|8|@]|9|@]|A|$]]|$1|R|3|O|5|6|7|1E|8|@]|9|@]|A|$]]|$1|S|3|J|5|K|7|1F|8|@]|9|@$L|1G|M|1H|1|1I]]|A|$]]|$1|T|3|O|5|6|7|1J|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11|12|-4]]|13|$5|X|Y|Z|A|$10|14|12|-4]]]]

Copy and paste this line in App delegate like this and it will print path like this
<pre><code>func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -&gt; Bool {
 // Override point for customization after application launch.
 print(NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).last! as String)
 return true
 }
</code></pre>
Copy the path and paste it in go To Folder in finder by right clicking on it then enter
<a href="https://i.stack.imgur.com/PAEXn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PAEXn.png" alt="enter image description here" /></a>
Open the file in Xcode
<a href="https://i.stack.imgur.com/kPqXh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kPqXh.png" alt="enter image description here" /></a>

I'm trying to get path to Documents folder with code:

<pre><code>var documentsPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory:0,NSSearchPathDomainMask:0,true)
</code></pre>

but Xcode gives error: <code>Cannot convert expression's type 'AnyObject[]!' to type 'NSSearchPathDirectory'</code>

I'm trying to understand what is wrong in the code.

How to find NSDocumentDirectory in Swift?

数据库

Xcode

我正在尝试使用代码获取Documents文件夹的路径：var documentsPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory:0,NSSearchPathDomainMask:0,true)但是Xcode给出了错误：Cannot con...

问如何在Swift中找到NSDocumentDirectory？
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