一、推送分为两种
一种是本地消息(Local Notificatio)，一种是远程消息(Push Notification).
二、推送的效果
UIRemoteNotificationTypeBadge 在应用图标上面显示角标
UIRemoteNotificationTypeSound 声音提醒
UIRemoteNotificationTypeAlert 通过alert或者是banner展示内容
三、本地推送
代码示例：
1、注册推送
//iOS8以后，使用推送需要用户授权
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes: (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound) categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:settings];
[[UIApplication sharedApplication] registerForRemoteNotifications];
} else {
[[UIApplication sharedApplication]registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound];
}
2、重写代理方法，查看“注册推送”的状态
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
NSString* token = [NSString stringWithFormat:@"%@", deviceToken];
NSLog(@"Register ok! %@", token);
}
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
NSLog(@"Register failed! %@", error);
}
3、添加通知
- (void)viewDidLoad {
[super viewDidLoad];
UILocalNotification *localNoti = [[UILocalNotification alloc] init];
localNoti.alertBody = @"这是一个推送的示例！！！";
localNoti.fireDate = [NSDate dateWithTimeIntervalSinceNow:5]; //设置5秒后发起通知
localNoti.soundName = @"default";
localNoti.applicationIconBadgeNumber = 1; //设置角标的数值
[[UIApplication sharedApplication] scheduleLocalNotification:localNoti];
}
至此，一个简单的本地推送示例就完成了。
四、远程推送
1、原理
1：app服务器把要发送的消息、目的设备的唯一标识打包，发给APNs。
2：APNs根据设备的唯一标识，把消息发送到设备。
3：app按照推送类型展示：是否需要声音，是否有角标，以及banner。
⚠️ 远程推送需要有推送证书。
2、实现
(1)、注册推送
//iOS8以后，使用推送需要用户授权
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes: (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound) categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:settings];
[[UIApplication sharedApplication] registerForRemoteNotifications];
} else {
[[UIApplication sharedApplication]registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound];
}
(2)、重写代理方法，查看“注册推送”的状态，并上传deviceToken至app服务器
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
NSString* token = [NSString stringWithFormat:@"%@", deviceToken];
NSLog(@"Register ok! %@", token);
//上传deviceToken到app的服务器
[KKUtils setTokenID:deviceToken];
}
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
NSLog(@"Register failed! %@", error);
}
3、添加通知
这个具体在app的服务器中实现。