IOS下本地消息提醒UILocalNotification

      本地消息提醒可與網絡數據爬取socket.io聯合使用

UILocalNotification *notification=[[UILocalNotification alloc] init];

        if (notification!=nil) {
            NSDate *now=[NSDate new];
            //notification.fireDate=[now dateByAddingTimeInterval:2];//2秒後通知
            //notification.repeatInterval=1;//循環次數，kCFCalendarUnitWeekday一週一次
            notification.timeZone=[NSTimeZone defaultTimeZone];
            //notification.applicationIconBadgeNumber=1; //應用的紅色數字
            notification.soundName = UILocalNotificationDefaultSoundName;//聲音，可以換成alarm.soundName = @"myMusic.caf"
            //去掉下面2行就不會彈出提示框
            notification.alertBody="有消息來了";//提示信息 彈出提示框
            notification.alertAction = @"打開";  //提示框按鈕
            //notification.hasAction = NO; //是否顯示額外的按鈕，爲no時alertAction消失
            
            // NSDictionary *infoDict = [NSDictionary dictionaryWithObject:@"someValue" forKey:@"someKey"];
            //notification.userInfo = infoDict; //添加額外的信息
            
            [[UIApplication sharedApplication] scheduleLocalNotification:notification];

        }

如果是在高版本的IOS中必須要加上這樣一段代碼纔可以實現消息提醒：

        在AppDelegate.m文件的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{      }

         方法體內加上：

if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){
        
        [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
        
    }