iOS開發之注冊推送通知權限

1、首先在工程設置開啟通知權限（Push Notifications開關打開）

 

2、注冊通知權限，在此步驟會彈出用戶授權提示

#import <UserNotifications/UserNotifications.h>

if ([[UIDevice currentDevice].systemVersion floatValue] >= 10.0){
        if (@available(iOS 10.0, *)) {
            UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
            __weak typeof(self) weakSelf = self;
            [center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert | UNAuthorizationOptionBadge | UNAuthorizationOptionSound) completionHandler:^(BOOL granted, NSError * _Nullable error) {
                if (granted) {
                    [center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
                        if (settings.authorizationStatus == UNAuthorizationStatusAuthorized){
                            dispatch_async(dispatch_get_main_queue(), ^{
                                [[UIApplication sharedApplication] registerForRemoteNotifications];
                            });
                        }
                    }];
                }
            }];
        }
    } else if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0){
        if (@available(iOS 8.0, *)) {
            if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)]) {
                UIUserNotificationSettings* notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound categories:nil];
                [[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings];
                [[UIApplication sharedApplication] registerForRemoteNotifications];
            } else {
                [[UIApplication sharedApplication] registerForRemoteNotificationTypes: (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
            }
        }
    }

注意iOS8.0和iOS10.0之后需要用不同的方法

3、獲取到遠程推送的token值

在Appdelegate類中重寫下面的方法

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
    NSString *token = [NSString stringWithFormat:@"%@",deviceToken];
    token = [token stringByReplacingOccurrencesOfString:@"<" withString:@""];
    token = [token stringByReplacingOccurrencesOfString:@">" withString:@""];
    token = [token stringByReplacingOccurrencesOfString:@" " withString:@""];
}

 獲取到token值之后妥善保存，並傳給服務器，服務器根據token值就可以通過APNS給app發送遠程推送通知了啦。