iOS推送通知「黃金寶典」

1. App關閉時接收到他推送通知，經過點擊推送通知來啓動App

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions;

在程序啓動完成後，在此方法中能夠獲得推送通知的類容，此處又分爲遠程通知和本地通知的區別。

遠程通知

NSDictionary *userInfo = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];

本地通知

UILocalNotification *localNoti = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
NSDictionary * userInfo = localNoti.userInfo;

這裏，爲了讓主界面先加載完成，通常須要延遲一小段時間後再去處理推送通知，push出相應的響應頁面等。

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
                [self didReceiveNotification:userInfo];
            });

2.App正在運行時接收到推送通知

遠程通知

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo;

本地通知

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification;

App狀態

UIApplicationStateActive, // 激活狀態，用戶正在使用App
    UIApplicationStateInactive, // 不激活狀態，用戶切換到其餘App、按Home鍵回到桌面、拉下通知中心
    UIApplicationStateBackground // 在後臺運行

根據application.applicationState的狀態，判斷執行哪一種動做。

 

三、檢測客戶端是否打開了接收通知的功能

檢測客戶端是否打開了通知：
if (IOS8) { //iOS8以上包含iOS8
        UIUserNotificationSettings *setting = [[UIApplication sharedApplication] currentUserNotificationSettings];

        if(UIUserNotificationTypeNone != setting.types) {
            NSLog(@"用戶打開了通知");
        }else{
            [self showAlert];
        }
    }else{ // ios7 一下
        UIRemoteNotificationType type = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
        if(UIRemoteNotificationTypeNone != type){
            NSLog(@"用戶打開了通知");
        }else{
            [self showAlert];
        }
    }


//用戶沒打開接受通知功能給出提示
-(void)showAlert{
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"「鳳凰雲健康」想給您發送推送通知" message:@"「通知」可能包括提醒、聲音和圖標標記。這些可在「設置」中配置。" preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"肯定" style:UIAlertActionStyleDefault handler:nil];
    [alertController addAction:okAction];
    [self presentViewController:alertController animated:YES completion:nil];
}