CODEWITHSUNDEEP
ioswebpush
Biribu
Biribu

Reputation: 3823

pass parameters from push notification to viewDidLoad

I have an ios app which loads a webpage to show data. I use push notifications for receiving news and I want that depending of which push is received, goes to one page or other (sections inside the same page).

In the text received in push notification, I add a word before the text, something like:

page1 - text
page2 - text2
page3 - text3
...

In android I take the first word and add to the webpage url: www.page.com/ + pageAdded

In iOs I think I haveto add this code to didFinishLaunchWithOptions function. But I don't know where I should add the new code for passing the arguments. I add my function so you can tell me where to put it.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    KeychainItemWrapper *keychainItem = [[KeychainItemWrapper alloc] initWithIdentifier:@"CityInfoPush" accessGroup:nil];
    udid = [keychainItem objectForKey:(__bridge id)kSecValueData];

    //if udid is empty , that means we need to generate one and save it on KeyChain
    if([udid length] == 0){
        NSLog(@"No CFUUID found. Creating one...");
        //creating CFUUID
        CFUUIDRef cfuuid = CFUUIDCreate(kCFAllocatorDefault);
        NSString *cfuuidString = (NSString*)CFBridgingRelease(CFUUIDCreateString(kCFAllocatorDefault, cfuuid));
        NSLog(@"Device CFUUID created is : %@" , cfuuidString);
        //saving CFUUID on KeyChain
        [keychainItem setObject: cfuuidString forKey:(__bridge id)kSecValueData];

        //retrieving CFUUID from KeyChain and passing it to udid String.
        udid = [keychainItem objectForKey:(__bridge id)kSecValueData];        
    }

    //For reseting the keyChain (testing)
    //[keychainItem resetKeychainItem];

    NSLog(@"Password Saved in KeyChain is: %@" , udid);


    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        self.viewController = [[ViewController alloc] initWithNibName:@"ViewController_iPhone" bundle:nil];
    } else {
        self.viewController = [[ViewController alloc] initWithNibName:@"ViewController_iPad" bundle:nil];
    }
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];

    // Let the device know we want to receive push notifications
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:
     (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];

    return YES;
}

I add the message to the payload for sending it to the apple server like this: 

// Create the payload body
$body['aps'] = array(
    'alert' => $message,
    'sound' => 'default'
    );

// Encode the payload as JSON
$payload = json_encode($body);

I am trying to get the alert text (message) in ios like this, but always fails and crash the app:

NSString *text=[[lastNotif valueForKeyPath:@"aps"][0] objectForKey:@"alert"];

Upvotes: 0

Views: 1710

Answers (1)

zbMax
zbMax

Reputation: 2818

First, you can check if you app has been launched with a puch notification in your application: didFinishLaunchingWithOptions: function with :

if ([launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey])

What I do is save this notification in the userDefaults :

[[NSUserDefaults standardUserDefaults] setObject:[launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey] forKey:@"notificationReceived"];
[[NSUserDefaults standardUserDefaults] synchronize];

Then in the viewDidLoad where you want to catch your push notification, check if you have one in memory :

NSDictionary *lastNotif = [[NSUserDefaults standardUserDefaults] objectForKey:@"notificationReceived"];
if (lastNotif != nil)
{
    //handle what you want to do with your notification

    //now don't forget to clean userDefaults
    [[NSUserDefaults standardUserDefaults] removeObjectForKey:@"notificationReceived"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

Upvotes: 4

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