ios10 推送富文本消息

 

注意!!!

Media Attachments和自定义推送界面

本地推送和远程推送同时都可支持附带Media Attachments。不过远程通知需要实现通知服务扩展UNNotificationServiceExtension,在service extension里面去下载attachment,但是需要注意,service extension会限制下载的时间(30s),并且下载的文件大小也会同样被限制。这里毕竟是一个推送,而不是把所有的内容都推送给用户。所以你应该去推送一些缩小比例之后的版本。比如图片,推送里面附带缩略图,当用户打开app之后,再去下载完整的高清图。视频就附带视频的关键帧或者开头的几秒,当用户打开app之后再去下载完整视频。

attachment支持图片,音频,视频,附件支持的类型及大小


附件类型和大小.png

系统会在通知注册前校验附件,如果附件出问题,通知注册失败;校验成功后,附件会转入attachment data store;如果附件是在app bundle,则是会被copy来取代move
media attachments可以利用3d touch进行预览和操作
attachment data store的位置?利用代码测试 获取在磁盘上的图片文件作为attachment,会发现注册完通知后,图片文件被移除,在app的沙盒中找不到该文件在哪里; 想要获取已存在的附件内容,文档中提及可以通过UNUserNotificationCenter中方法,但目前文档中这2个方法还是灰的,见苹果开发者文档


Apple developer.png
//就是这两个方法
getDataForAttachment:withCompletionHandler:
getReadFileHandleForAttachment:withCompletionHandler:

 

 

1、准备工作
附件限定https协议,所以我们现在找一个支持https的图床用来测试,我之前能测试的图床现在不能用了。你们可以自行googole,这是我之前上传的图片链接:https://p1.bpimg.com/524586/475bc82ff016054ds.jpg
具体附件格式可以查看苹果开发文档 

2、添加新的Targe--> Notification Service
先在Xcode 打开你的工程,File-->New-->Targe然后添加这个Notification Service:


Notification Service.png

这样在你工程里能看到下面目录:


Notification Service.png


然后会自动创建一个 UNNotificationServiceExtension 的子类 NotificationService,通过完善这个子类,来实现你的需求。

点开 NotificationService.m 会看到 2 个方法:

// Call contentHandler with the modified notification content to deliver. If the handler is not called before the service's time expires then the unmodified notification will be delivered.
// You are expected to override this method to implement push notification modification.
- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent *contentToDeliver))contentHandler;

// Will be called just before this extension is terminated by the system. You may choose whether to override this method.
- (void)serviceExtensionTimeWillExpire;

didReceiveNotificationRequest让你可以在后台处理接收到的推送,传递最终的内容给 contentHandler
serviceExtensionTimeWillExpire 在你获得的一小段运行代码的时间即将结束的时候,如果仍然没有成功的传入内容,会走到这个方法,可以在这里传肯定不会出错的内容,或者他会默认传递原始的推送内容

主要的思路就是在这里把附件下载下来,然后才能展示渲染,下面是下载保存的相关方法:

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

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

    NSString * attchUrl = [request.content.userInfo objectForKey:@"image"];
    //下载图片,放到本地
    UIImage * imageFromUrl = [self getImageFromURL:attchUrl];

    //获取documents目录
    NSArray * paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString * documentsDirectoryPath = [paths firstObject];

    NSString * localPath = [self saveImage:imageFromUrl withFileName:@"MyImage" ofType:@"png" inDirectory:documentsDirectoryPath];
    if (localPath && ![localPath isEqualToString:@""]) {
        UNNotificationAttachment * attachment = [UNNotificationAttachment attachmentWithIdentifier:@"photo" URL:[NSURL URLWithString:[@"file://" stringByAppendingString:localPath]] options:nil error:nil];
        if (attachment) {
            self.bestAttemptContent.attachments = @[attachment];
        }
    }
    self.contentHandler(self.bestAttemptContent);
}

- (UIImage *) getImageFromURL:(NSString *)fileURL {
    NSLog(@"执行图片下载函数");
    UIImage * result;
    //dataWithContentsOfURL方法需要https连接
    NSData * data = [NSData dataWithContentsOfURL:[NSURL URLWithString:fileURL]];
    result = [UIImage imageWithData:data];

    return result;
}

//将所下载的图片保存到本地
- (NSString *) saveImage:(UIImage *)image withFileName:(NSString *)imageName ofType:(NSString *)extension inDirectory:(NSString *)directoryPath {
    NSString *urlStr = @"";
    if ([[extension lowercaseString] isEqualToString:@"png"]){
        urlStr = [directoryPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.%@", imageName, @"png"]];
        [UIImagePNGRepresentation(image) writeToFile:urlStr options:NSAtomicWrite error:nil];

    } else if ([[extension lowercaseString] isEqualToString:@"jpg"] ||
               [[extension lowercaseString] isEqualToString:@"jpeg"]){
        urlStr = [directoryPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.%@", imageName, @"jpg"]];
        [UIImageJPEGRepresentation(image, 1.0) writeToFile:urlStr options:NSAtomicWrite error:nil];

    } else{
        NSLog(@"extension error");
    }
    return urlStr;
}



- (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);
}

apes如下:

{
   "aps":{
        "alert" : {
             "title" : "iOS远程消息,我是主标题!-title",
              "subtitle" : "iOS远程消息,我是主标题!-Subtitle",
              "body" : "Dely,why am i so handsome -body"
            },
        "sound" : "default",
        "badge" : "1",
        "mutable-content" : "1",
        "category" : "Dely_category"
    },
    "image" : "https://p1.bpimg.com/524586/475bc82ff016054ds.jpg",
    "type" : "scene",
    "id" : "1007"
}

注意:mutable-content这个键值为1,这意味着此条推送可以被 Service Extension 进行更改,也就是说要用Service Extension需要加上这个键值为1.

3、添加新的Targe--> Notification Content

先在Xcode 打开你的工程,File-->New-->Targe然后添加这个 Notification Content:


Notification Content.png

这样你在工程里同样看到下面的目录:


Notification Content.png

点开 NotificationViewController.m 会看到 2 个方法:

- (void)viewDidLoad;
- (void)didReceiveNotification:(UNNotification *)notification;

前者渲染UI,后者获取通知信息,更新UI控件中的数据。

在MainInterface.storyboard中自定你的UI页面,可以随意发挥,但是这个UI见面只能用于展示,并不能响应点击或者手势其他事件,只能通过category来实现,下面自己添加view和约束


MainInterface.storyboard.png

然后把view拉到.m文件中,代码如下:

#import "NotificationViewController.h"
#import <UserNotifications/UserNotifications.h>
#import <UserNotificationsUI/UserNotificationsUI.h>

@interface NotificationViewController () <UNNotificationContentExtension>

@property IBOutlet UILabel *label;
@property (weak, nonatomic) IBOutlet UIImageView *imageView;

@end

@implementation NotificationViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any required interface initialization here.

//    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
//    [self.view addSubview:view];
//    view.backgroundColor = [UIColor redColor];
}

- (void)didReceiveNotification:(UNNotification *)notification {

    self.label.text = notification.request.content.body;
    UNNotificationContent * content = notification.request.content;
    UNNotificationAttachment * attachment = content.attachments.firstObject;
    if (attachment.URL.startAccessingSecurityScopedResource) {
        self.imageView.image = [UIImage imageWithContentsOfFile:attachment.URL.path];
    }
}

@end

有人要有疑问了,可不可以不用storyboard来自定义界面?当然可以了!
只需要在Notifications Content 的info.plist中把NSExtensionMainStoryboard替换为NSExtensionPrincipalClass,并且value对应你的类名!
然后在viewDidLoad里用纯代码布局就可以了


纯代码自定义通知界面.png

4、发送推送

完成上面的工作的时候基本上可以了!然后运行工程,
上面的json数据放到APNS Pusher里面点击send:


68BFC911-791F-410D-8849-1F06A135B04E.png

稍等片刻应该能收到消息:


远端消息.jpg

长按或者右滑查看:


远端消息2.jpg

注意 注意 注意:
如果你添加了category,需要在Notification content的info.plist添加一个键值对UNNotificationExtensionCategory的value值和category Action的category值保持一致就行。


UNNotificationExtensionCategory.png

同时在推送json中添加category键值对也要和上面两个地方保持一致:


pusher.png

就变成了下面:


远端消息3.jpg

上面介绍了远端需要Service Extension 的远端推送
iOS 10附件通知(图片、gif、音频、视频)。不过对图片和视频的大小做了一些限制(图片不能超过 10M,视频不能超过 50M),而且附件资源必须存在本地,如果是远程推送的网络资源需要提前下载到本地。
如果是本地的就简单了只需要在Service Extension的NotificationService.m的- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent * _Nonnull))contentHandler拿到资源添加到Notification Content,在Notification Content的控制器取到资源自己来做需求处理和展示

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


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

    // 资源路径
    NSURL *videoURL = [[NSBundle mainBundle] URLForResource:@"video" withExtension:@"mp4"];
    // 创建附件资源
    // * identifier 资源标识符
    // * URL 资源路径
    // * options 资源可选操作 比如隐藏缩略图之类的
    // * error 异常处理
    UNNotificationAttachment *attachment = [UNNotificationAttachment attachmentWithIdentifier:@"video.attachment" URL:videoURL options:nil error:nil];
    // 将附件资源添加到 UNMutableNotificationContent 中
    if (attachment) {
        self.bestAttemptContent.attachments = @[attachment];
    }

    self.contentHandler(self.bestAttemptContent);
}

Notification.png

上图如果你想把default 隐藏掉,只需要在Notification Content 的info.plist中添加一个键值UNNotificationExtensionDefaultContentHidden设置为YES就可以了:

 

hiddenDefaultContent.png
 
 
 
 
转自/Dely(简书作者)
原文链接:http://www.jianshu.com/p/81c6bd16c7ac
著作权归作者所有,转载请联系作者获得授权,并标注“简书作者”。
 
 
posted @ 2017-03-02 14:29  心里住着鬼  阅读(4766)  评论(1编辑  收藏  举报