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我正在使用objective-c 开发一个iPhone 应用程序。基本推送通知工作正常。现在我想在我的应用程序中添加丰富的通知，但我无法在 NotificationService 中触发 didReceiveNotificationRequest。

这是我在 Appdelegate 上收到的通知负载：

通知负载（见 mutable-content 设置为 1）

https://image.ibb.co/ndA2Qo/grab.png

这是 NotificationService.m 文件；

#import "NotificationService.h"
#import "Common.h"

@interface NotificationService ()

@property (nonatomic, strong) void (^contentHandler)(UNNotificationContent *contentToDeliver);
@property (nonatomic, strong) UNMutableNotificationContent *bestAttemptContent;

@end

@implementation NotificationService

- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent * _Nonnull))contentHandler {
self.contentHandler = contentHandler;
self.bestAttemptContent = [request.content mutableCopy];
NSLog(@"didReceiveNotificationRequest");
// Modify the notification content here...
// load the attachment
NSDictionary *userInfo = request.content.userInfo;
NSString *imageURL = [userInfo valueForKey:@"thumbnail_image"];
NSArray *parts = [imageURL componentsSeparatedByString:@"."];
NSString *extension = [parts lastObject];
[self loadAttachmentForUrlString:imageURL
                        withExtension:extension
               completionHandler:^(UNNotificationAttachment *attachment) {
                   if (attachment) {
                       self.bestAttemptContent.attachments = [NSArray arrayWithObject:attachment];
                   }
                   //self.bestAttemptContent.title = [NSString stringWithFormat:@"%@ [modified]", self.bestAttemptContent.title];

                   self.contentHandler(self.bestAttemptContent);
               }];



}

- (void)serviceExtensionTimeWillExpire {
// Called just before the extension will be terminated by the system.
// Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
self.contentHandler(self.bestAttemptContent);
}

- (void)loadAttachmentForUrlString:(NSString *)urlString withExtension:(NSString *)extension completionHandler:(void(^)(UNNotificationAttachment *))completionHandler  {

__block UNNotificationAttachment *attachment = nil;
NSURL *attachmentURL = [NSURL URLWithString:urlString];

NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
[[session downloadTaskWithURL:attachmentURL
            completionHandler:^(NSURL *temporaryFileLocation, NSURLResponse *response, NSError *error) {
                if (error != nil) {
                    NSLog(@"%@", error.localizedDescription);
                } else {
                    NSFileManager *fileManager = [NSFileManager defaultManager];
                    NSURL *localURL = [NSURL fileURLWithPath:[temporaryFileLocation.path stringByAppendingString:extension]];
                    [fileManager moveItemAtURL:temporaryFileLocation toURL:localURL error:&error];

                    NSError *attachmentError = nil;
                    attachment = [UNNotificationAttachment attachmentWithIdentifier:@"" URL:localURL options:nil error:&attachmentError];
                    if (attachmentError) {
                        NSLog(@"%@", attachmentError.localizedDescription);
                    }
                }
                completionHandler(attachment);
            }] resume];
}

@end

我错过了什么？

请指教，

赛米

4

2 回答 2

2

现有答案指出您应该将 content-available 设置为 1，这NSLog在扩展中不起作用，并且后台线程是一个问题。这些都不对。

  1. content-available:1 与通知服务扩展无关，要启动它，您需要 mutable-content:1。

  2. NSLog 在扩展中运行良好，在故障排除时使用 OS 控制台很方便。

  3. 在后台线程中下载图像没有问题。

尝试在 OS 控制台中查看可能发生的情况（在 Mac 上启动 console.app，插入设备并在左侧选择它，然后查看发送推送时发生的情况。即使没有 NSLog，您也应该看到操作系统试图查找并启动一个扩展，例如：

default 10:38:53.925889 -0400   SpringBoard [com.you.whatever] Remote 
notification request 386D-4968 can be modified: 1
default 10:38:53.926227 -0400   SpringBoard [com.you.whatever] Trying to find extension for bundle
info    10:38:53.942366 -0400   pkd Candidate plugin count: 1, info: (
"com.you.whatever.NotificationServiceExtension(1.0.0) 2765CB-8244DD--B83D-20CB148BCEF6")
default 10:38:53.945090 -0400   SpringBoard [com.you.whatever] Extension can modify push notification request 386D-4968? YES

如果您没有看到成功，则可能是您的项目设置有问题，可以尝试在 XCode 中重新创建目标（通过文件 -> 新建 -> 目标，选择通知服务扩展）。

于 2018-06-29T14:24:47.370 回答
1

您正在后台线程中下载图像，这导致富推送通知案例中的问题。如果您愿意，可以尝试使用此框架

还在您的应用程序中添加“内容可用”：1

或者你可以尝试像这样下载，

- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent *))contentHandler {

    self.contentHandler = contentHandler;
    self.bestAttemptContent = [request.content mutableCopy];

    self.bestAttemptContent.title = [NSString stringWithFormat:@"%@",request.content.title];
    self.bestAttemptContent.body = [NSString stringWithFormat:@"%@",request.content.body];

    NSString *attachmentUrlString = [NSString stringWithFormat:@"%@",[request.content.userInfo valueForKey:@"thumbnail_image"]];

    if (![attachmentUrlString isKindOfClass:[NSString class]]) {
        [self failEarly];
        return;
    }

    NSURL *url = [NSURL URLWithString:attachmentUrlString];
    if (!url) {
        [self failEarly];
        return;
    }

    NSData *data = [NSData dataWithContentsOfURL:url];
    if (!data) {
        [self failEarly];
        return;
    }

    NSString *identifierName = [self getIdentifierName:attachmentUrlString];
    NSString *tmpSubFolderName = [[NSProcessInfo processInfo] globallyUniqueString];

    self.bestAttemptContent.attachments = [NSArray arrayWithObject:[self create:identifierName andData:data withOptions:nil andTmpFolderName:tmpSubFolderName]] ;
    self.contentHandler(self.bestAttemptContent);

}

-(void)failEarly {
    self.contentHandler(self.bestAttemptContent);
}

-(NSString *)getIdentifierName:(NSString *)fileURL
{
    NSString *identifierName = @"image.jpg";

    if (fileURL) {
        identifierName = [NSString stringWithFormat:@"file.%@",fileURL.lastPathComponent];
    }

    return identifierName;
}

-(UNNotificationAttachment *)create:(NSString *)identifier andData:(NSData *)data withOptions:(NSDictionary *)options andTmpFolderName:(NSString *)tmpSubFolderName {

    NSString *fileURLPath = NSTemporaryDirectory();
    NSString *tmpSubFolderURL = [fileURLPath stringByAppendingPathComponent:tmpSubFolderName];
    NSError *error;
    [[NSFileManager defaultManager] createDirectoryAtPath:tmpSubFolderURL withIntermediateDirectories:TRUE attributes:nil error:&error];
    if(!error) {
        NSString *fileURL = [tmpSubFolderURL stringByAppendingPathComponent:identifier];
        [data writeToFile:fileURL atomically:YES];
        UNNotificationAttachment *attachment = [UNNotificationAttachment attachmentWithIdentifier:identifier URL:[NSURL fileURLWithPath:fileURL] options:options error:&error];
        return attachment;
    }
    return nil;
}

- (void)serviceExtensionTimeWillExpire {
    self.contentHandler(self.bestAttemptContent);
}
于 2018-05-25T07:39:13.437 回答