iOS10推送（APNS）App+后端实现

Xcode里的相关配置如下：

Capability设置

APP实现

获取Device Token和处理通知，直接贴代码：

AppDelegate.h:

#ifdef NSFoundationVersionNumber_iOS_9_x_Max
#import <UserNotifications/UserNotifications.h>
#endif

@interface AppDelegate : UIResponder <UIApplicationDelegate, UNUserNotificationCenterDelegate>

@property (nonatomic, strong) UIWindow *window;

@end

AppDelegate.m:

#import "AppDelegate.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  if ([[UIDevice currentDevice].systemVersion floatValue] >= 10.0) {
    //iOS10特有
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    // 必须写代理，不然无法监听通知的接收与点击
    center.delegate = self;
    [center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert | UNAuthorizationOptionBadge | UNAuthorizationOptionSound) completionHandler:^(BOOL granted, NSError * _Nullable error) {
      if (granted) {
        // 点击允许
        NSLog(@"注册成功");
        [center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
          NSLog(@"%@", settings);
        }];
      } else {
        // 点击不允许
        NSLog(@"注册失败");
      }
    }];
  }
  // 注册获得device Token
  [[UIApplication sharedApplication] registerForRemoteNotifications];
  return YES;
}

#pragma mark - RemoteNotifications
// 获得Device Token
 - (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
   const unsigned *tokenBytes = [deviceToken bytes];
   NSString *hexToken = [NSString stringWithFormat:@"%08x%08x%08x%08x%08x%08x%08x%08x",
                            ntohl(tokenBytes[0]), ntohl(tokenBytes[1]), ntohl(tokenBytes[2]),
                            ntohl(tokenBytes[3]), ntohl(tokenBytes[4]), ntohl(tokenBytes[5]),
                            ntohl(tokenBytes[6]), ntohl(tokenBytes[7])];
   NSLog(@"DeviceToken: %@", hexToken);
//   [[MyModel sharedModel] setApnsToken:hexToken];
}
// 获得Device Token失败
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
    NSLog(@"did Fail To Register For Remote Notifications With Error: %@", error);
}


#pragma mark - UNUserNotificationCenterDelegate

// iOS 10收到通知
- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler{
    NSDictionary * userInfo = notification.request.content.userInfo;
    UNNotificationRequest *request = notification.request; // 收到推送的请求
    UNNotificationContent *content = request.content; // 收到推送的消息内容
    NSNumber *badge = content.badge;  // 推送消息的角标
    NSString *body = content.body;    // 推送消息体
    UNNotificationSound *sound = content.sound;  // 推送消息的声音
    NSString *subtitle = content.subtitle;  // 推送消息的副标题
    NSString *title = content.title;  // 推送消息的标题
    
    if([notification.request.trigger isKindOfClass:[UNPushNotificationTrigger class]]) {
      NSLog(@"iOS10 前台收到远程通知:%@", notification);
//      NSLog(@"iOS10 前台收到远程通知:%@", [self logDic:userInfo]);
    } else {
        // 判断为本地通知
        NSLog(@"iOS10 前台收到本地通知:{\\\\nbody:%@，\\\\ntitle:%@,\\\\nsubtitle:%@,\\\\nbadge：%@，\\\\nsound：%@，\\\\nuserInfo：%@\\\\n}",body,title,subtitle,badge,sound,userInfo);
    }
    completionHandler(UNNotificationPresentationOptionBadge|UNNotificationPresentationOptionSound|UNNotificationPresentationOptionAlert); // 需要执行这个方法，选择是否提醒用户，有Badge、Sound、Alert三种类型可以设置
}

// 通知的点击事件
- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)(void))completionHandler{
    NSDictionary * userInfo = response.notification.request.content.userInfo;
    UNNotificationRequest *request = response.notification.request; // 收到推送的请求
    UNNotificationContent *content = request.content; // 收到推送的消息内容
    NSNumber *badge = content.badge;  // 推送消息的角标
    NSString *body = content.body;    // 推送消息体
    UNNotificationSound *sound = content.sound;  // 推送消息的声音
    NSString *subtitle = content.subtitle;  // 推送消息的副标题
    NSString *title = content.title;  // 推送消息的标题
    if([response.notification.request.trigger isKindOfClass:[UNPushNotificationTrigger class]]) {
        NSLog(@"iOS10 收到远程通知:%@", response);
//      NSLog(@"iOS10 收到远程通知:%@", [self logDic:userInfo]);
    }
    else {
        // 判断为本地通知
        NSLog(@"iOS10 收到本地通知:{\\\\nbody:%@，\\\\ntitle:%@,\\\\nsubtitle:%@,\\\\nbadge：%@，\\\\nsound：%@，\\\\nuserInfo：%@\\\\n}",body,title,subtitle,badge,sound,userInfo);
    }
    
    // Warning: UNUserNotificationCenter delegate received call to -userNotificationCenter:didReceiveNotificationResponse:withCompletionHandler: but the completion handler was never called.
    completionHandler();  // 系统要求执行这个方法

}

@end

这里的hexToken（Device Token）是需要记录的，传到后端存起来。处理这个token的时候需要注意，重新安装App后其值发生变化，后端存储的时候要考虑到这种情况。比如更新用户的token信息。

如果不开发后端，想直接测试推送的话，可以使用SmartPush模拟推送，进行测试。里面涉及到一个证书的配置，可以看这篇文章：手把手教你实现iOS 远程推送

后端（PHP，框架CodeIgniter）

有token-based和certificate-based两种方式发送请求。

我这里用的是token-based，这种方式需要以下几个信息：

Key（后缀名是.p8）文件和对应的Key ID
Team ID
App的Bundle ID
Device Token（App里获取，见上文）

1. 创建Key

创建Key

输入Key Name并选择Apple Push Notifications service后，点击右上角Continue

点击右上角Register

下载Key文件（只能下一次，妥善保存），记录Key ID

2. Team ID

获取Team ID

后端代码

拿到这些信息后，就可以发送推送请求了。
把下载下来的Key（后缀名是.p8）文件上传到服务器上。

几个重要信息可以存储在其它地方，这里只是为了方便。

define('AUTH_KEY_PATH', '<path-to-p8-file>');
define('AUTH_KEY_ID', '<Key ID for your p8>');
define('TEAM_ID', '<your team id>');
define('BUNDLE_ID', '<your app bundle identifier>');

private function generateAuthenticationHeader() {
  $header = base64_encode(json_encode([
                'alg' => 'ES256',
                'kid' => AUTH_KEY_ID
            ]));

  $claims = base64_encode(json_encode([
                'iss' => TEAM_ID,
                'iat' => time()
            ]));

  $pkey = openssl_pkey_get_private('file://' . AUTH_KEY_PATH);
  openssl_sign("$header.$claims", $signature, $pkey, 'sha256');

  $signed = base64_encode($signature);
  return "$header.$claims.$signed";
}

private function sendNotification($debug, $token, $payload) {
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2_0);
  curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_HTTPHEADER, [
      'apns-topic: ' . BUNDLE_ID,
      'authorization: bearer ' . $this->generateAuthenticationHeader(),
      'apns-push-type: alert'
  ]);

// 如果正式环境，$debug=false，不然下面$response会出现BadDeviceToken的错误
  $server = $debug ? 'api.development' : 'api';
  $url = 'https://'.$server.'.push.apple.com/3/device/'.$token;
  curl_setopt($ch, CURLOPT_URL, $url);
  
  $response = curl_exec($ch);
  
  if ($response === false) {
      return ["curl_exec failed: " . curl_error($ch)];
  }
  
  $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  if ($code === 400 || $code === 410) {
      $json = @json_decode($response);
      return ['Reason: '.$json->reason, $code];
      // if ($json->reason === 'BadDeviceToken') {
      //   //  echo 'BadDeviceToken';
      // }
  }
  
  curl_close($ch);
  return [$response, $code];
}

public function testpush() {
  $deviceToken = '<your device token>';
  $payload = [
    "aps"=>[
      "alert"=>[
        "title"=>"Game Request",
        "body"=>"Bob wants to play poker",
      ],
      "badge"=>1,
    ],
  ];
  $result = $this->sendNotification(true, $deviceToken, $payload);
  echo json_encode($result);
}

payload的具体设置可见 Creating the Remote Notification Payload