iOS App Launch Option
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http://blog.csdn.net/tiger119/article/details/7949004
iOS 程序启动时总会调用application:didFinishLaunchingWithOptions:,其中第二个参数launchOptions为NSDictionary类型的对象,里面存储有此程序启动的原因。
launchOptions中的可能键值见UIApplication Class Reference的Launch Options Keys节 。
- 若用户直接启动,lauchOptions内无数据;
- 若由其他应用程序通过openURL:启动,则UIApplicationLaunchOptionsURLKey对应的对象为启动URL(NSURL),UIApplicationLaunchOptionsSourceApplicationKey对应启动的源应用程序的bundle ID (NSString);
- 若由本地通知启动,则UIApplicationLaunchOptionsLocalNotificationKey对应的是为启动应用程序的的本地通知对象(UILocalNotification);
- 若由远程通知启动,则UIApplicationLaunchOptionsRemoteNotificationKey对应的是启动应用程序的的远程通知信息userInfo(NSDictionary);
- 其他key还有UIApplicationLaunchOptionsAnnotationKey,UIApplicationLaunchOptionsLocationKey,
UIApplicationLaunchOptionsNewsstandDownloadsKey。
如果要在启动时,做出一些区分,那就需要在下面的代码做处理。
比如:您的应用可以被某个其它应用调起(作为该应用的子应用),要实现单点登录,那就需要在启动代码的地方做出合理的验证,并跳过登录。
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{ NSURL *url = [options objectForKey:UIApplicationLaunchOptionsURLKey]; if(url) { } NSString *bundleId = [options objectForKey:UIApplicationLaunchOptionsSourceApplicationKey]; if(bundleId) { } UILocalNotification * localNotify = [options objectForKey:UIApplicationLaunchOptionsLocalNotificationKey]; if(localNotify) { } NSDictionary * userInfo = [options objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey]; if(userInfo) { }}
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