How to show local notification when app is foreground - ios

Question

How to show local notification always, even in foreground, using new (from iOS 10) notification framework UserNotifications https://developer.apple.com/reference/usernotifications?language=objc ?

Answer 1

#import <UserNotifications/UserNotifications.h>
#define SYSTEM_VERSION_GRATERTHAN_OR_EQUALTO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
//interface
#interface AppDelegate : UIResponder <UIApplicationDelegate,UNUserNotificationCenterDelegate>
#end
//implementation
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
[self registerForRemoteNotifications];
return YES;
}
- (void)registerForRemoteNotifications {
if(SYSTEM_VERSION_GRATERTHAN_OR_EQUALTO(#"10.0")){
UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
center.delegate = self;
[center requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error){
if(!error){
[[UIApplication sharedApplication] registerForRemoteNotifications];
}
}];
}
else {
// Code for old versions
}
}
////...........Handling delegate methods for UserNotifications........
//Called when a notification is delivered to a foreground app.
-(void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler{
NSLog(#"User Info : %#",notification.request.content.userInfo);
completionHandler(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge);
}
//Called to let your app know which action was selected by the user for a given notification.
-(void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)())completionHandler{
NSLog(#"User Info : %#",response.notification.request.content.userInfo);
completionHandler();
}
May this will help you. :)

Answer 2

You can do this way.
//in Appdelegate
-(void)application:(UIApplication *)application didReceiveLocalNotification(UILocalNotification *)notification
{
dispatch_async(dispatch_get_main_queue(),^{
NSLog(#"alertbody ..%#", notification.alertBody);
NSLog(#"title ..%#", notification.alertTitle);
NSLog(#"action ..%#", notification.alertAction);
NSLog(#"userinfo..%#", notification.userInfo);
[[NSNotificationCenter defaultCenter]postNotificationName:#"NotificationReceived" object:nil userInfo:notification.userInfo];
});
}
//in present view controller
-(void)viewDidLoad
{
[[NSNotificationCenter defaultCenter]addObserver:self selector:#selector(notificationReceivedMethod:) name:#"NotificationReceived" object:nil];
}
-(void) viewWillDisappear:(BOOL)animated {
{
[[NSNotificationCenter defaultCenter]removeObserver:self name:#"NotificationReceived" object:nil];
}
-(void)notificationReceivedMethod
{
//create you custom popup or view
}