在IOS8测试版中共享扩展

Question

我正在尝试使用新的iOS 8应用扩展程序创建共享扩展程序.我试图获取Safari网站的当前URL以在UILabel中显示它.很简单.

我正在通过Apple的官方扩展指南工作https://developer.apple.com/library/content/documentation/General/Conceptual/ExtensibilityPG/Share.html#//apple_ref/doc/uid/TP40014214-CH12-SW1但有些事情没有按预期运作.我知道它只是在测试中,但也许我只是做错了.

这是我在扩展ViewController中从safari获取URL的代码:

-(void)viewDidAppear:(BOOL)animated{
NSExtensionContext *myExtensionContext = [self extensionContext];
NSArray *inputItems = [myExtensionContext inputItems];
NSMutableString* mutableString = [[NSMutableString alloc]init];
for(NSExtensionItem* item in inputItems){
    NSMutableString* temp = [NSMutableString stringWithFormat:@"%@, %@, %lu, 
           %lu - ",item.attributedTitle,[item.attributedContentText string],
           (unsigned long)[item.userInfo count],[item.attachments count]];

    for(NSString* key in [item.userInfo allKeys]){
        NSArray* array = [item.userInfo objectForKey:@"NSExtensionItemAttachmentsKey"];
        [temp appendString:[NSString stringWithFormat:@" in array:%lu@",[array count]]];   
    }
    [mutableString appendString:temp];
}
self.myLabel.text = mutableString;
}

这是我的扩展的Info.plist文件的内容:

<dict>
    <key>NSExtensionMainStoryboard</key>
    <string>MainInterface</string>
    <key>NSExtensionPointIdentifier</key>
    <string>com.apple.share-services</string>
    <key>NSExtensionActivationRule</key>
    <dict>
        <key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
        <integer>200</integer>
    </dict>
</dict>

当我在Safari中访问苹果iPod支持页面并尝试将其共享到我的扩展程序时,我得到以下值但没有URL:

item.attributedTitle = (null)
item.attributedContentText = "iPod - Apple Support"
item.userInfo.count = 2 (two keys: NSExtensionAttributedContentTextKey and
    NSExtensionItemAttachmentsKey)
item.attachments.count = 0

字典对象内的数组总是空的.

当我与系统邮件应用程序共享Apple站点时,URL将发布到邮件中.那么为什么我的扩展程序中没有URL？

Answer 1

以下是如何获取网址的方法.请注意,类型标识符是kUTTypeURL,块参数是NSURL.此外,plist也需要像我的一样正确.文档缺乏,并从Apple dev论坛的number4获得帮助.(您需要注册并登录才能看到它).

码:

NSExtensionItem *item = self.extensionContext.inputItems.firstObject;
NSItemProvider *itemProvider = item.attachments.firstObject;
if ([itemProvider hasItemConformingToTypeIdentifier:(NSString *)kUTTypeURL]) {
    [itemProvider loadItemForTypeIdentifier:(NSString *)kUTTypeURL options:nil completionHandler:^(NSURL *url, NSError *error) {
        self.urlString = url.absoluteString;
    }];
}

的Info.plist

<key>NSExtension</key>
<dict>
    <key>NSExtensionAttributes</key>
    <dict>
        <key>NSExtensionActivationRule</key>
        <dict>
            <key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
            <integer>1</integer>
        </dict>
        <key>NSExtensionPointName</key>
        <string>com.apple.share-services</string>
        <key>NSExtensionPointVersion</key>
        <string>1.0</string>
    </dict>
    <key>NSExtensionPointIdentifier</key>
    <string>com.apple.share-services</string>
    <key>NSExtensionMainStoryboard</key>
    <string>MainInterface</string>
</dict>

Answer 2

我已经为自己解决了这个问题.我在尝试使用"共享图像".

- (void)didSelectPost {


// This is called after the user selects Post. Do the upload of contentText and/or NSExtensionContext attachments.

// Inform the host that we're done, so it un-blocks its UI. Note: Alternatively you could call super's -didSelectPost, which will similarly complete the extension context.

// Verify that we have a valid NSExtensionItem
NSExtensionItem *imageItem = [self.extensionContext.inputItems firstObject];
if(!imageItem){
    return;
}

// Verify that we have a valid NSItemProvider
NSItemProvider *imageItemProvider = [[imageItem attachments] firstObject];
if(!imageItemProvider){
    return;
}

// Look for an image inside the NSItemProvider
if([imageItemProvider hasItemConformingToTypeIdentifier:(NSString *)kUTTypeImage]){
    [imageItemProvider loadItemForTypeIdentifier:(NSString *)kUTTypeImage options:nil completionHandler:^(UIImage *image, NSError *error) {
        if(image){
            NSLog(@"image %@", image);
            // do your stuff here...

        }
    }];
    }
// this line should not be here. Cos it's called before the block finishes.
// and this is why the console log or any other task won't work inside the block
[self.extensionContext completeRequestReturningItems:nil completionHandler:nil];

}

所以我所做的就是移动[self.extensionContext completeRequestReturningItems:nil completionHandler:nil]; 在其他任务结束时的块内.最终的工作版本看起来像这样(Mavericks OS X 10.9.4上的Xcode 6 beta 5):

- (void)didSelectPost {


// This is called after the user selects Post. Do the upload of contentText and/or NSExtensionContext attachments.

// Inform the host that we're done, so it un-blocks its UI. Note: Alternatively you could call super's -didSelectPost, which will similarly complete the extension context.

// Verify that we have a valid NSExtensionItem
NSExtensionItem *imageItem = [self.extensionContext.inputItems firstObject];
if(!imageItem){
    return;
}

// Verify that we have a valid NSItemProvider
NSItemProvider *imageItemProvider = [[imageItem attachments] firstObject];
if(!imageItemProvider){
    return;
}

// Look for an image inside the NSItemProvider
if([imageItemProvider hasItemConformingToTypeIdentifier:(NSString *)kUTTypeImage]){
    [imageItemProvider loadItemForTypeIdentifier:(NSString *)kUTTypeImage options:nil completionHandler:^(UIImage *image, NSError *error) {
        if(image){
            NSLog(@"image %@", image);
            // do your stuff here...

            // complete and return
            [self.extensionContext completeRequestReturningItems:nil completionHandler:nil];       
        }
    }];
    }
// this line should not be here. Cos it's called before the block finishes.
// and this is why the console log or any other task won't work inside the block
// [self.extensionContext completeRequestReturningItems:nil completionHandler:nil];

}

我希望它也能用于URL共享.