通知触发时播放视频

Question

我正在制作一个应用程序，其中用户 select 时间和视频。当通知触发时，我希望播放 select 视频。我怎样才能做到这一点？这是我的通知代码。

-(void) scheduleLocalNotificationWithDate:(NSDate *)fireDate
{

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

    localNotif.fireDate = fireDate;
    localNotif.timeZone = [NSTimeZone localTimeZone];
    localNotif.alertBody = @"Time to wake Up";
    localNotif.alertAction = @"Show me";
    localNotif.soundName = @"Tick-tock-sound.mp3";
    localNotif.applicationIconBadgeNumber = 1;
    localNotif.repeatInterval = NSCalendarUnitDay;
    NSLog(@" date %lu",kCFCalendarUnitDay);
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotif]; 
}

有什么建议吗？

Answer 1

一旦用户打开您的本地通知，您的应用就会启动，- application:didFinishLaunchingWithOptions: of your UIApplicationDelegate will be called. The options dictionary will contain a UIApplicationLaunchOptionsLocalNotificationKey key, which contains the UILocalNotification. That should give you enough information to determine which video needs to be played, which you can do with the Media Player framework。

Answer 2

您安排本地通知的代码看起来不错。也许你还应该在本地通知的 userInfo 属性中添加一些数据，这样当它触发时，你可以检查属性并根据需要做一些不同的事情（播放特定视频）到 userInfo.

里面的数据

示例：

NSDictionary *infoDict = [NSDictionary dictionaryWithObject:@"video1" forKey:@"videoName"];
localNotif.userInfo = infoDict;

确保您还请求用户许可使用本地通知，否则本地通知将不会触发。

示例：

UIUserNotificationType types = UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert;
UIUserNotificationSettings *mySettings = [UIUserNotificationSettings settingsForTypes:types categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:mySettings];

现在您需要处理当您的应用程序处于 3 种状态时触发本地通知：前景、background/suspended 和非运行。

该应用程序运行在前台。本地通知会在您设置的日期触发。以下委托方法将在 AppDelegate 中被系统调用：

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
    NSString *videoName = [notification.userInfo objectForKey:@"videoName"];
    //do something, probably play your specific video
}

该应用程序运行在 后台或已暂停 。向用户显示本地通知（它在您设置的日期触发）并且用户点击它。系统将在 AppDelegate 中调用与上述 (didReceiveLocalNotification) 相同的委托方法：

应用 不是运行，向用户显示本地通知（它在您设置的日期触发）并且用户点击它。以下委托方法将在 AppDelegate 中被系统调用：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    UILocalNotification *localNotif = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
    if (localNotif)
    {
       //the app was launched by tapping on a local notification
       NSString *videoName = [localNotif.userInfo objectForKey:@"videoName"];
       // play your specific video
    } else {
       // the app wasn't launched by tapping on a local notification
       // do your regular stuff here
    }
}

我建议阅读 Apple's documentation 关于使用本地通知的内容。

您可以使用 Glorfindel 的回答 中推荐的媒体播放器框架，您可以在此 Whosebug answer 中找到播放视频的示例。

通知触发时播放视频

Play Video When Notification fire

ios

objective-c

video

uilocalnotification