苹果在iOS 8之后将应用程序的通知设置为用户可选择 ,因此可以在AppDelegate的如下方法中请求用户的授权,用户同意之后即可向用户发送通知.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
if ([[UIDevice currentDevice].systemVersion doubleValue] >= 8.0)
{
UIUserNotificationType types = UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert;
UIUserNotificationSettings *notificationSettings = [UIUserNotificationSettings settingsForTypes:types categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings];
}
else
{
UIRemoteNotificationType types = UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert;
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:types];
}
return YES;
}