奇怪的注意事項(xiàng)（測試版本iOS15）

1. 如果不設(shè)置普通推送delegate，則普通推送會(huì)走靜默推送回調(diào)。
2. 程序每次卸載+重裝都會(huì)更新token。
3. 即使彈窗用戶點(diǎn)擊不允許，依舊可以獲取token。
4. 設(shè)置中的關(guān)閉通知，僅對普通推送有效，對靜默推送不起作用。同理，關(guān)閉后臺(tái)刷新只對靜默推送有效，對普通推送不起作用。
5. 靜默推送會(huì)強(qiáng)行啟動(dòng)App，不管App是Active、Suspend、Killed或者任何情況，記住是任何情況。
6. 靜默推送啟動(dòng)App會(huì)走application:didFinishLaunchingWithOptions:，但是不會(huì)觸發(fā)UIApplicationDidBecomeActiveNotification。
7. 靜默推送會(huì)自動(dòng)啟動(dòng)App，并且最長維持30秒，用戶再次點(diǎn)擊時(shí)不會(huì)再觸發(fā)application:didFinishLaunchingWithOptions:。
8. 蘋果后臺(tái)申請推送證書以及Identifiers時(shí)，只需要勾選Push Notifications即可實(shí)現(xiàn)兩種推送功能。
9. 普通推送只有在點(diǎn)擊通知欄進(jìn)入App后，才會(huì)走對應(yīng)的回調(diào)。
10. 網(wǎng)上的其他教程大部分在瞎扯淡。

推送代碼

#import <UserNotifications/UserNotifications.h>

@interface AppDelegate () <UNUserNotificationCenterDelegate>

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    NSLog(@"啟動(dòng)了");
    [self setNormalPushNotification];
    return YES;
}

// 初始化普通推送
- (void)setNormalPushNotification {
    [[UNUserNotificationCenter currentNotificationCenter] requestAuthorizationWithOptions:(UNAuthorizationOptionBadge|UNAuthorizationOptionSound|UNAuthorizationOptionAlert) completionHandler:^(BOOL granted, NSError * _Nullable error) {
        NSLog(@"是否允許通知: %d", granted);
    }];
    
    [[UIApplication sharedApplication] registerForRemoteNotifications];
    
    // ??注意: 如果不設(shè)置delegate,普通推送也會(huì)走didReceiveRemoteNotification
    [[UNUserNotificationCenter currentNotificationCenter] setDelegate:self];
}

// App在前臺(tái)時(shí)收到普通推送
- (void)userNotificationCenter:(UNUserNotificationCenter*)center willPresentNotification:(UNNotification*)notification withCompletionHandler:(void(^)(UNNotificationPresentationOptions))completionHandler {
    NSDictionary* userInfo = notification.request.content.userInfo;
    NSLog(@"前臺(tái)收到普通推送: %@", userInfo);
}

// App在后臺(tái)時(shí)點(diǎn)擊普通推送欄
- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)(void))completionHandler {
    NSDictionary* userInfo = response.notification.request.content.userInfo;
    NSLog(@"后臺(tái)收到普通推送: %@", userInfo);
    completionHandler();
}

// APNS注冊成功，返回token
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
    if (![deviceToken isKindOfClass:[NSData class]]) return;
    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);
}

// APNS注冊失敗
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
    NSLog(@"Error: %@", error);
}

// App在任何狀態(tài)下收到靜默推送
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {
    NSLog(@"收到靜默推送: %@", userInfo);
    [[NSNotificationCenter defaultCenter] postNotificationName:@"Recieve" object:nil];
    
    UIApplicationState state = [UIApplication sharedApplication].applicationState;
     if(state == UIApplicationStateBackground) {
            NSLog(@"App在后臺(tái)，運(yùn)行5秒");
     }  else if (state == UIApplicationStateActive) {
            NSLog(@"App在前臺(tái)");
     }

    // 5秒后通知系統(tǒng)將處于后臺(tái)的App掛起（suspend）
    [NSTimer scheduledTimerWithTimeInterval:5 repeats:NO block:^(NSTimer * _Nonnull timer) {
        completionHandler(UIBackgroundFetchResultNewData);
    }];
}

@end

推送JSON測試用例

// 靜默推送
{"aps":{"content-available":1}}

// 普通推送
{"aps":{"alert":"普通推送","sound":"default","userinfo":{"username":"tom"}}}

好用的推送測試軟件

https://github.com/onmyway133/PushNotifications/releases