第二步我们需要在 (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions中注册通知，代码如下：
- (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");
}
}];
}else if ([[UIDevice currentDevice].systemVersion floatValue] >8.0){
//iOS8 - iOS10
[application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeSound | UIUserNotificationTypeBadge categories:nil]];
}else if ([[UIDevice currentDevice].systemVersion floatValue] < 8.0) {
//iOS8系统以下
[application registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound];
}
// 注册获得device Token
[[UIApplication sharedApplication] registerForRemoteNotifications];
其中，获得Device Token的方法是没有改变的。
// 获得Device Token
- (void)application:(UIApplication *)application
didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
NSLog(@"%@", [NSString stringWithFormat:@"Device Token: %@", deviceToken]);
}
// 获得Device Token失败
- (void)application:(UIApplication *)application
didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
NSLog(@"did Fail To Register For Remote Notifications With Error: %@", error);
}
此次iOS10系统的更新，苹果给了我们2个代理方法来处理通知的接收和点击事件，这两个方法在<UNUserNotificationCenterDelegate>的协议中，大家可以查看下。此外，苹果把本地通知跟远程通知合二为一。区分本地通知跟远程通知的类是UNPushNotificationTrigger.h类中，UNPushNotificationTrigger的类型是新增加的，通过它，我们可以得到一些通知的触发条件，在使用时，我们不应该直接使用这个类，应当使用它的子类。
我简单点说
1.UNPushNotificationTrigger （远程通知） 远程推送的通知类型
2.UNTimeIntervalNotificationTrigger
