您必须修改 UNNotificationRequest 内容部分。下面是我用于通知扩展的代码 sn-p。
import UserNotifications
class NotificationService: UNNotificationServiceExtension {
var contentHandler: ((UNNotificationContent) -> Void)?
var bestAttemptContent: UNMutableNotificationContent?
override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
self.contentHandler = contentHandler
bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
if let bestAttemptContent = bestAttemptContent {
var urlString:String? = nil
if let urlImageString = request.content.userInfo["urlImageString"] as? String {
urlString = urlImageString
}
// You can set what ever title you want to set
bestAttemptContent.title = "Your custom tile goes here"
if urlString != nil, let fileUrl = URL(string: urlString!) {
print("fileUrl: \(fileUrl)")
guard let imageData = NSData(contentsOf: fileUrl) else {
contentHandler(bestAttemptContent)
return
}
guard let attachment = UNNotificationAttachment.saveImageToDisk(fileIdentifier: "image.jpg", data: imageData, options: nil) else {
print("error in UNNotificationAttachment.saveImageToDisk()")
contentHandler(bestAttemptContent)
return
}
bestAttemptContent.attachments = [ attachment ]
}
contentHandler(bestAttemptContent)
}
}
override func serviceExtensionTimeWillExpire() {
if let contentHandler = contentHandler, let bestAttemptContent = bestAttemptContent {
contentHandler(bestAttemptContent)
}
}
}
@available(iOSApplicationExtension 10.0, *)
extension UNNotificationAttachment {
static func saveImageToDisk(fileIdentifier: String, data: NSData, options: [NSObject : AnyObject]?) -> UNNotificationAttachment? {
let fileManager = FileManager.default
let folderName = ProcessInfo.processInfo.globallyUniqueString
let folderURL = NSURL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent(folderName, isDirectory: true)
do {
try fileManager.createDirectory(at: folderURL!, withIntermediateDirectories: true, attributes: nil)
let fileURL = folderURL?.appendingPathComponent(fileIdentifier)
try data.write(to: fileURL!, options: [])
let attachment = try UNNotificationAttachment(identifier: fileIdentifier, url: fileURL!, options: options)
return attachment
} catch let error {
print("error \(error)")
}
return nil
}
}
我使用过的 JSON 负载
{
"aps": {
"alert": {
"title": "title",
"body": "Your message Here"
},
"mutable-content": 1
},
"urlImageString": "https://cdn.pixabay.com/photo/2015/04/23/22/00/tree-736885__340.jpg"
}
使用您的代码仓库，我得到的输出如下
如果你想调试通知服务扩展，那么你必须从下拉列表中选择通知服务扩展方案，然后你的断点将为你工作