我正在为我的示例项目使用storyboard.该体系结构是Login View Controller和Home PageView控制器.用户单击Home PageView控制器中的按钮以启动本地通知.
-(IBAction)startLocalNotification { // Bind this method to UIButton action
NSLog(@"startLocalNotification");
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.fireDate = [NSDate dateWithTimeIntervalSinceNow:7];
notification.alertBody = @"This is local notification!";
notification.timeZone = [NSTimeZone defaultTimeZone];
notification.soundName = UILocalNotificationDefaultSoundName;
notification.applicationIconBadgeNumber = 10;
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){
[application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
}
[launchOptions valueForKey:UIApplicationLaunchOptionsLocalNotificationKey];
// Override point for customization after application launch.
return YES;
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
[UIApplication sharedApplication].applicationIconBadgeNumber = 0;
NSLog(@"didReceiveLocalNotification");
}
现在将应用程序推送到后台状态后,我在控制台中收到消息,但本地通知正常工作正常.
快照未呈现的视图会导致空快照.确保在屏幕更新后快照或快照之前,您的视图至少呈现过一次.
这条消息与什么有关？
解决方法
我有我认为可以作为’答案’站起来……而且这几乎肯定没什么不对,但可能是iOS(8.1.3 / 8.2)的问题.据我所知,这是无害的.
我玩弄了这个,发现它与UITextField / Keyboard有关.
所以只有一个文本字段的单个视图应用程序,请按照以下步骤操作(仅在iPad上试用)：
>构建并运行
>将焦点放在文本字段中
>关闭键盘(它应该已打开)
>单击主页按钮(应用程序进入后台)
>返回应用程序
>单击主页按钮(应用程序进入后台)
>观察日志输出.
这是一个示例项目：https://github.com/duttski/TestForStrangeSnapshotMessage.
归档为bug,并试图通过开发论坛获取一些信息.
更新：我认为这可能会在以后的版本中修复.但我没有测试过它.在开发论坛上发言后,我被告知这不用担心.
