Is it possible to show the latest Push Notification in a Label in the StoryBoard? - iphone

Question

I like to show the latest Push Notification in a label in my main StoryBoard I use this code to display the alert message in my AppDelegate.m:
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
NSDictionary *test =(NSDictionary *)[userInfo objectForKey:#"aps"];
NSString *alertString =(NSString *) [test objectForKey:#"alert"];
NSLog(#"String recieved: %#",alertString);
UIApplicationState state = [[UIApplication sharedApplication] applicationState];
if (state == UIApplicationStateActive) {
UIAlertView *alertmessage=[[UIAlertView alloc]initWithTitle:#"Geier"
message:alertString delegate:self
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alertmessage show];
AudioServicesPlaySystemSound(1002);
}
}
i tried this in my ViewController.m file latestpush.text = #"%#",alertString; but it doesn't work.
Can someone help me?
Thanks:)

Answer 1

You need to make the text available to the view controller.
You could do this by sending a custom NSNotification with the alert message, from inside application:didReceiveRemoteNotification:
[[NSNotificationCenter defaultCenter]
postNotificationName:#"PushAlertNotification"
object:self
userInfo:#{#"alertString":alertString}];
In your view controller's viewDidLoad method, register as an observer:
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(updateStoryboard:)
name:#"PushAlertNotification"
object:nil];
and create the updateStoryboard: method in the view controller:
- (void) updateStoryboard:(NSNotification *) notification {
self.latestpush.text = notification.userInfo[#"alertString"];
}
An alternative solution is to create a property in your AppDelegate that takes in the ViewController as an observer.
AppDelegate.h (change ViewController to the actual type of your VC).
#property (nonatomic, weak) ViewController *observer;
Inside the ViewController create a method that accepts the NSString and have that method update your Storyboard.
ViewController.m
-(void)updateStoryboard(NSString *alertString) {
self.latestpush.text = alertString;
}
Also, in your ViewContoller's viewDidLoad method, register yourself with the appDelegate:
- (void)viewDidLoad {
[super viewDidLoad];
AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
delegate.observer = self;
}
Call updateStoryboard inside your application:didReceiveRemoteNotification: method:
[self.observer updateStoryboard:alertString];