iOS10新的通知机制中如何添加图片-创新互联
小编给大家分享一下iOS10新的通知机制中如何添加图片，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！
1、新建Target
2、实现UNNotificationServiceExtension
我这里用的是swift
//
// NotificationService.swift
// NotificationServiceExtension
//
// Created by Heyuan Li on 17/2/26.
// Copyright © 2017年 fenbi. All rights reserved.
//
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 {
// Modify the notification content here...
bestAttemptContent.title = "上课啦"
if let imageURLString = bestAttemptContent.userInfo["image"] as? String,
let URL = URL(string: imageURLString)
{
downloadAndSave(url: URL) { localURL in
if let localURL = localURL {
do {
let attachment = try UNNotificationAttachment(identifier: "image_downloaded", url: localURL, options: nil)
bestAttemptContent.attachments = [attachment]
} catch {
print(error)
}
}
contentHandler(bestAttemptContent)
}
}
}
}
override func 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.
if let contentHandler = contentHandler, let bestAttemptContent = bestAttemptContent {
contentHandler(bestAttemptContent)
}
}
private func downloadAndSave(url: URL, handler: @escaping (_ localURL: URL?) -> Void) {
let task = URLSession.shared.dataTask(with: url, completionHandler: {
data, res, error in
var localURL: URL? = nil
if let data = data {
let ext = (url.absoluteString as NSString).pathExtension
let cacheDirs = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)
if cacheDirs.count > 0 {
let cacheDir = cacheDirs[cacheDirs.count - 1]
/// TODO tutor cache
/// TODO md5 extension
let url = cacheDir.appendingPathComponent("123").appendingPathExtension(ext)
if let _ = try? data.write(to: url) {
localURL = url
}
}
}
handler(localURL)
})
task.resume()
}
}3、发Push的时候，加上”mutable-content”: 1
{
"aps": {
"alert": "instant message from CRM",
"sound": "default",
"mutable-content": 1
},
......
"image": "https://g0.fbcontent.cn/api/tutor/images/153c6c68411747f.jpg"
}这个很关键
最后运行，就会自动展示图片啦。
需要说明的是，默认是只能https的，如果想显示http图片，需要自行设定ATS相关配置。
以上是“iOS10新的通知机制中如何添加图片”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注创新互联网站建设公司行业资讯频道！
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文章标题：iOS10新的通知机制中如何添加图片-创新互联
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