使用ios 8 app [swift]打开邮件附件 [英] Open attachment from mail using ios 8 app [swift]

问题描述

在我的应用程序中，我设计了一种新的加密类型数据作为邮件的附件。当我从其他用户收到相同类型的附件（filename.filetype）时，我希望邮件中的附件在我的应用程序中打开。我经历了动作扩展教程。但是，缺少的是，如何使用我的快速应用程序打开该特定类型的附件。我在Obj-C以及以前版本的iOS中得到答案。我在iOS8中寻求答案，Swift处理文件。

这是我的info.plist

 <密钥GT; UTExportedTypeDeclarations< /密钥GT; 
< array> 
< dict> 
< key> UTTypeConformsTo< / key> 
< array> 
< string> public.data< / string> 
< / array> 
< key> UTTypeDescription< / key> 
< string> pvt文件< / string> 
< key> UTTypeIdentifier< / key> 
< string> com.pryvateBeta.pvt< / string> 
< key> UTTypeTagSpecification< / key> 
< dict> 
< key> public.filename-extension< / key> 
< string> pvt< / string> 
< / dict> 
< / dict> 
< / array> 
< key> CFBundleDocumentsType< / key> 
< array> 
< dict> 
< key> CFBundleTypeIconFiles< / key> 
< array /> 
< key> CFBundleTypeName< / key> 
< string> pvt文件< / string> 
< key> CFBundleTypeRole< / key> 
< string> Viewer< / string> 
< key> LSHandlerRank< / key> 
< string>所有者< / string> 
< key> LSItemContentTypes< / key> 
< array> 
< string> com.pryvateBeta.pvt< / string> 
< / array> 
< / dict> 
< / array> 
  

这是我的AppDelegate

  func application（application：UIApplication，openURL Url：NSURL，sourceApplication：String？annotation：AnyObject？） - > Bool {
 let encrypteddata = NSData（contentsOfURL：Url）
 
返回true} 
  

解决方案

首先，您需要声明应用程序将在您的应用程序中处理的文件类型 Info.plist 。 / p>

例如，下面显示的配置声明该应用程序能够打开基本为XML的 .lumenconfig 文件。 有关声明的更多信息，请参阅。 a>

 < key> CFBundleDocumentTypes< / key> 
< array> 
< dict> 
< key> CFBundleTypeName< / key> 
<！ - 此文件类型的名称。 - > 
< string>流明配置< / string> 
< key> CFBundleTypeIconFiles< / key> 
<！ - 此文件类型的名称。 - > 
< array /> 
< key> LSItemContentTypes< / key> 
<！ - 处理
的不同类型标识符作为这种类型的文件。 - > 
< array> 
<！ - 这是我在下面声明的自定义类型 - > 
< string> at.zujab.lumen.lumenconfig< / string> 
< / array> 
< / dict> 
< / array> 
  

如果您在上述示例中使用像我这样的自定义类型，您还需要声明该类型。 有关声明您自己的类型的更多信息，请参阅/ a>

 < key> UTExportedTypeDeclarations< / key> 
< array> 
< dict> 
< key> UTTypeConformsTo< / key> 
<！ - 这些文件是如何构造的 - > 
< array> 
< string> public.xml< / string> 
< / array> 
< key> UTTypeIdentifier< / key> 
<！ - 这是自定义类型的标识符 - > 
< string> at.zujab.lumen.lumenconfig< / string> 
< key> UTTypeDescription< / key> 
<！ - 你的应用程序如何调用这些文件。 - > 
< string>流明配置文件< / string> 
< key> UTTypeTagSpecification< / key> 
< dict> 
< key> public.filename-extension< / key> 
<！ - 这种类型的文件的扩展名 - > 
< string>管理配置< / string> 
< / dict> 
< / dict> 
< / array> 
  

然后在您的应用程序委托中实现一个处理程序来处理文件：

  @UIApplicationMain 
 class AppDelegate：UIResponder，UIApplicationDelegate {
 
 // .... 
 
 func应用程序（应用程序：UIApplication，openURL url：NSURL，sourceApplication：String？注释：AnyObject？） - > Bool {
 // url包含文件的URL，您的应用程序将打开
 
 //在我的示例中，我想要将该文件作为字典读取
 let dictionary = NSDictionary （contentsOfURL：url）
 
} 
 
} 
  

In my app, I designed a new encrypted type data as attachment to the mail. When I receive the same type of attachment(filename.filetype) from another user, I want the attachment from mail to open in my app. I went through the action extensions tutorials. But, what is missing is, how can I open that particular type of attachment using my swift app. I get the answers in Obj-C as well as the previous versions of iOS. I am seeking an answer in iOS8, Swift to handle the file.

Here is my info.plist

<key>UTExportedTypeDeclarations</key>
<array>
    <dict>
        <key>UTTypeConformsTo</key>
        <array>
            <string>public.data</string>
        </array>
        <key>UTTypeDescription</key>
        <string>pvt file</string>
        <key>UTTypeIdentifier</key>
        <string>com.pryvateBeta.pvt</string>
        <key>UTTypeTagSpecification</key>
        <dict>
            <key>public.filename-extension</key>
            <string>pvt</string>
        </dict>
    </dict>
</array>
<key>CFBundleDocumentsType</key>
<array>
    <dict>
        <key>CFBundleTypeIconFiles</key>
        <array/>
        <key>CFBundleTypeName</key>
        <string>pvt file</string>
        <key>CFBundleTypeRole</key>
        <string>Viewer</string>
        <key>LSHandlerRank</key>
        <string>Owner</string>
        <key>LSItemContentTypes</key>
        <array>
            <string>com.pryvateBeta.pvt</string>
        </array>
    </dict>
</array>

Here is my AppDelegate

func application(application: UIApplication, openURL Url: NSURL, sourceApplication: String?, annotation: AnyObject?) -> Bool {
    let encrypteddata = NSData(contentsOfURL: Url)

    return true}

解决方案

First of all you need to declare the file type your app will handle in your apps Info.plist.

For instance the configuration shown below declares that the app is able to open .lumenconfig files which are basically XML. See this for more info about the declarations.

<key>CFBundleDocumentTypes</key>
<array>
    <dict>
        <key>CFBundleTypeName</key>
        <!-- The name of this file type. -->
        <string>Lumen Configuration</string>
        <key>CFBundleTypeIconFiles</key>
        <!-- The name of this file type. -->
        <array/>
        <key>LSItemContentTypes</key>
        <!-- The different type identifiers that are handled 
             as this type of file. -->
        <array>
            <!-- This is a custom type I declare below -->
            <string>at.zujab.lumen.lumenconfig</string>
        </array>
    </dict>
</array>

If you use a custom type like I do in the above example you also need to declare that type. See this for more information about declaring your own type

<key>UTExportedTypeDeclarations</key>
<array>
    <dict>
        <key>UTTypeConformsTo</key>
        <!-- How these files are structured -->
        <array>
            <string>public.xml</string>
        </array>
        <key>UTTypeIdentifier</key>
        <!-- This is the identifier for the custom type -->
        <string>at.zujab.lumen.lumenconfig</string> 
        <key>UTTypeDescription</key>
        <!-- How your app calls these files. -->
        <string>Lumen Configuration File</string>
        <key>UTTypeTagSpecification</key>
        <dict>
            <key>public.filename-extension</key>
             <!-- The extension of the files of this type -->
            <string>lumenconfig</string>
        </dict>
    </dict>
</array>

Then in your app delegate implement a handler to handle the file:

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    //....

    func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject?) -> Bool {
        //url contains a URL to the file your app shall open

        //In my EXAMPLE I would want to read the file as a dictionary
        let dictionary = NSDictionary(contentsOfURL: url)

    }

}

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