前言

昨天产品观察到飞书和钉钉在收到通知消息的时候,通知图标是发信人的头像,让我也实现一下,经过一天多的探索终于搓出来了一个可用的方案。效果图如下。
实现效果

原理

实现原理简单,就是通过Notifiction Service Extension 在通知内容展示到通知栏里前进行一次处理,其中使用SiriKit中的INPersonINmage
Notifiction Service Extension

实现

MainTarget配置

1.配置info.plist文件

将以下配置添加项目info.plist文件

NSUserActivityTypes (Array)
    - INStartCallIntent
    - INSendMessageIntent

![配置效果](https://img-blog.csdnimg.cn/26ebfbeb47044a1abcf6f50c0c54fffd.png

2.配置Capability

Signing&Capability添加** Communication Notifications** 和 Push Notifications
添加
效果

3.配置推送

通知的配置就不再这里详细说明了,我是用的友盟推送。只要能正常推送消息到通知栏即可

Notifiction Service Extension配置

1.添加Notifiction Service Extension到Targets

Xcode->New->Target->选择Notifiction Service Extension->Next->填写Product Name->选择开发语言Swift Or Objective-C) ->Finish我用的是OC开发,所以下面的代码都是OC版本
add target

1.配置info.plist文件

Notifiction Service Extensioninfo.plist需要加入下面的字段,千万注意位置,很重要!加错位置都不生效

NSUserActivityTypes (Array)
    - INStartCallIntent
    - INSendMessageIntent

info

2.配置Capability

Notifiction Service ExtensionSigning&Capability中添加Push Notifications即可

3.检查Notifiction Service Extension代码是否正常运行

创建Notifiction Service Extension后会生成NotificationService.hNotificationService.m(Swift版本生成NotificationService.swift)文件。

//
//  NotificationService.m
//  NotificationService

#import "NotificationService.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];
    // Modify the notification content here...
    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);
}
@end

这时,测试发送通知,通知的标题后面带着 [modified]证明已经成功。或者在Debug模式断点进入到这个方法内就算配置成功了。
注意:要使用 Notifiction Service Extension 需要在高级设置的内容链接中添加键值

// 这是必须的
mutable-content : 1 

// 注意格式层级是和 alert一个级别的
{
    "payload":{
        "aps":{
            "alert":{
                "body":"测试一下内容",
                "title":"测试下标题",
                "subtitle":"测试一下副标题"
            },
            "sound":"default",
            "mutable-content":"1"
        }
    }
}

push

4.推送添加字段

需要在通知的自定义参数内配置一个字段来传递头像的URLKey定为sender_image_urlValue是我随便在百度上找的一张表情
https://img2.baidu.com/it/u=1880320954,1568482765&fm=253&fmt=auto&app=138&f=JPEG?w=542&h=500
配置

// json结构大致如下
{
    "payload":{
        "aps":{
            "alert":{
                "body":"测试一下内容",
                "title":"测试下标题",
                "subtitle":"测试一下副标题"
            },
            "sound":"default",
            "mutable-content":"1"
        },
        "sender_image_url":"https://img2.baidu.com/it/u=1880320954,1568482765&fm=253&fmt=auto&app=138&f=JPEG?w=542&h=500"
    }
}

5.处理显示通知

首先,我们需要一个下载保存图片本地方法。将图片下载保存本地取出配置给通知。详细的说明见下面的示例代码吧!

#import "NotificationService.h"
#import <Intents/Intents.h>
@interface NotificationService ()

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

@end

@implementation NotificationService
// 下载保存图片的方法
- (void)downloadINPersonWithURLString:(NSString *)urlStr completionHandle:(void(^)(NSData *data))completionHandler{
    __block NSData *data = nil;
    NSURL *imageURL = [NSURL URLWithString:urlStr];
    NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
    [[session downloadTaskWithURL:imageURL 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:@".png"]];
            [fileManager moveItemAtURL:temporaryFileLocation toURL:localURL error:&error];

            NSLog(@"localURL = %@", localURL);
            data = [[NSData alloc] initWithContentsOfURL:localURL];
        }
        completionHandler(data);

    }]resume];
}

- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent * _Nonnull))contentHandler {
    self.contentHandler = contentHandler;
    self.bestAttemptContent = [request.content mutableCopy];
    // 这一行只是方便查看,记得在上线前去掉哦!
    self.bestAttemptContent.title = [NSString stringWithFormat:@"%@ [modified]", self.bestAttemptContent.title];
    // 头像
    NSString *senderImageURLString = self.bestAttemptContent.userInfo[@"sender_image_url"];
    // 标题
    NSString *title = self.bestAttemptContent.title;
    // 副标题
    NSString *subtitle = self.bestAttemptContent.subtitle;
    // 内容
    NSString *body = self.bestAttemptContent.body;
    // 下载获取图片
    [self loadINPersonWithURLString:senderImageURLString completionHandle:^(NSData *data) {
        if (data) {
        	// 将图片数据转换成INImage(需要 #import <Intents/Intents.h>)
            INImage *avatar = [INImage imageWithImageData:data];
            // 创建发信对象
            INPersonHandle *messageSenderPersonHandle = [[INPersonHandle alloc] initWithValue:@"" type:INPersonHandleTypeUnknown];
            NSPersonNameComponents *components = [[NSPersonNameComponents alloc] init];
            INPerson *messageSender = [[INPerson alloc] initWithPersonHandle:messageSenderPersonHandle
                                                              nameComponents:components
                                                                 displayName:title
                                                                       image:avatar
                                                           contactIdentifier:nil
                                                            customIdentifier:nil
                                                                        isMe:NO
                                                              suggestionType:INPersonSuggestionTypeNone];
            // 创建自己对象
            INPersonHandle *mePersonHandle = [[INPersonHandle alloc] initWithValue:@"" type:INPersonHandleTypeUnknown];
            INPerson *mePerson = [[INPerson alloc] initWithPersonHandle:mePersonHandle
                                                         nameComponents:nil
                                                            displayName:nil
                                                                  image:nil
                                                      contactIdentifier:nil
                                                       customIdentifier:nil
                                                                   isMe:YES
                                                         suggestionType:INPersonSuggestionTypeNone];
            
            
            // 创建intent
            INSpeakableString *speakableString = [[INSpeakableString alloc] initWithSpokenPhrase:subtitle];
            INSendMessageIntent *intent = [[INSendMessageIntent alloc] initWithRecipients:@[mePerson, messageSender]
                                                                      outgoingMessageType:INOutgoingMessageTypeOutgoingMessageText
                                                                                  content:body
                                                                       speakableGroupName:speakableString
                                                                   conversationIdentifier:nil
                                                                              serviceName:nil
                                                                                   sender:messageSender
                                                                              attachments:nil];
            
            [intent setImage:avatar forParameterNamed:@"speakableGroupName"];
            // 创建 interaction
            INInteraction *interaction = [[INInteraction alloc] initWithIntent:intent response:nil];
            interaction.direction = INInteractionDirectionIncoming;
            [interaction donateInteractionWithCompletion:nil];
            // 创建 处理后的 UNNotificationContent
            NSError *error = nil;
            UNNotificationContent *messageContent = [request.content contentByUpdatingWithProvider:intent error:&error];
            
            if (!error && messageContent) {
            	// 处理过的
                self.contentHandler(messageContent);
            } else {
            	// 处理失败的情况
                self.contentHandler(self.bestAttemptContent);
            }
        } else {
       		// 处理下载失败的情况
            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);
}
@end

至此,发送测试通知后即可得到前言中的效果图了。

[补充]本地通知实现通信通知

以上都是通过服务器下发通知产生通信通知,本地通知也是可以带上这个效果的,只需要构建一个专门的Content就行,参考代码如下:
实现效果

	#import <Intents/Intents.h>
	#import <UserNotifications/UserNotifications.h>

	// 这个是头像,可以使用本地的图片,也可以使用网络下载好图片后再回调中传递过来
	INImage *avatarImage = [INImage imageWithImageData:UIImagePNGRepresentation([UIImage imageNamed:@"icon_acfun"])];
	
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init];
    content.title = @"111";
    content.subtitle = @"哈哈哈";
    content.body = @"你在干嘛????";
    content.sound = [UNNotificationSound defaultSound];
    content.badge = @([UIApplication sharedApplication].applicationIconBadgeNumber + 1);
    // 注意版本判断
    if (@available(iOS 15.0, *)) {
        NSPersonNameComponents *nameComponents = [[NSPersonNameComponents alloc] init];
        nameComponents.nickname = content.title;
        // 注意:displayName: 是显示通信通知标题部分的文案,会顶替掉content.title,所以建议与 content.title保持一致
        // customIdentifier 消息id,无所谓了
        INPerson *messageSender = [[INPerson alloc]initWithPersonHandle:[[INPersonHandle alloc]initWithValue:nil type:INPersonHandleTypeUnknown] nameComponents:nameComponents displayName:content.title image:avatarImage contactIdentifier:nil customIdentifier:@"需要一个消息id" isMe:NO suggestionType:(INPersonSuggestionTypeNone)];
        // initWithSpokenPhrase 展示的是subtitle部分,所以与content.subtitle保持一致,不写的话content.subtitle是显示不出来的
        INSendMessageIntent *intent = [[INSendMessageIntent alloc] initWithRecipients:@[messageSender] outgoingMessageType:(INOutgoingMessageTypeOutgoingMessageText) content:content.body speakableGroupName:[[INSpeakableString alloc]initWithSpokenPhrase:content.subtitle] conversationIdentifier:@"123456" serviceName:nil sender:messageSender attachments:nil];
        [intent setImage:avatarImage forParameterNamed:@"speakableGroupName"];
        INInteraction *interaction = [[INInteraction alloc]initWithIntent:intent response:nil];
        interaction.direction = INInteractionDirectionIncoming;
        [interaction donateInteractionWithCompletion:nil];
        // requestWithIdentifier 通知的id  可以与 上面 customIdentifier保持一致
        // 关键代码 就是 contentByUpdatingWithProvider:intent 这个创建方法。
        UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@"123456" content:[content contentByUpdatingWithProvider:intent error:nil] trigger:nil];
        
        [center addNotificationRequest:request withCompletionHandler:^(NSError *_Nullable error) {
            NSLog(@"成功添加推送");
        }];
        
    }else{
        UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@"123456" content:content trigger:nil];
        [center addNotificationRequest:request withCompletionHandler:^(NSError *_Nullable error) {
            NSLog(@"成功添加推送");
        }];
    }

是不是很简单呢,这部分我是参考的《iOS 通信通知 Communication Notifications 的实现》这篇文章写的很棒。

[补充]推送副标题为空时会自动显示一个【你与+标题】问题解决

其实【你与+标题】属于参数speakableGroupName管辖,我们在写
INSpeakableString *speakableString = [[INSpeakableString alloc] initWithSpokenPhrase:subtitle];
只要改成
INSpeakableString *speakableString = [[INSpeakableString alloc] initWithSpokenPhrase:subtitle.length ? subtitle : @""];
即可
主要就是判断一下副标题是否为空初始化speakableString时给一个空字符串即可将副标题直接隐藏掉
将speakableGroupName 直接赋值nil也是无效

hahaha

容易出现问题的地方

1、info.plist文件配置错误,一定要看好键值对配置的位置。

2、Capability的配置,一定要记得MainTarget里是2个,Extension里是1个。

3、测试推送一定要记得加上 mutable-content : 1哦!

4、项目运行要注意是否存在Build缓存,如果写了代码没反应记得清除一下缓存

参考文献

Apple Developer Documentation – Implementing Communication Notifications.
Apple Developer Forums – iOS 15 Communication Notifications not working!.
Stackoverflow – iOS 15 Communication Notification picture not shown.
GitHub – Dexwell/LocalCommunicationNotification.swift
CSDN – 通信通知 Communication Notifications 的实现 (iOS 15+)
友盟+开发者文档 – iOS集成文档
51cto – 这份 iOS 15 推送通知设计指南,值得设计师们仔细阅读!
likecs – Ios 推送扩展Notification Service Extension 与简单的语音合成 (学习笔记)
CSDN – iOS10推送通知进阶(Notification Extension)
iOS 通信通知 Communication Notifications 的实现

原文地址:https://blog.csdn.net/qq_38718912/article/details/126975533

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