CODEWITHSUNDEEP
iosobjective-cpush-notificationnsstring
Test 87
Test 87

Reputation: 111

How to pass dynamic string into PushNotificationManager

I hint error as below when i pass in data into PushNotificationManager.

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSSingleObjectArrayI un_stringWithMaxLength:]: unrecognized selector sent to instance 0x604000018550'

Here is my code:-

     [self.manager GET:@"http://api.xxxx.com/api/promotion/1" parameters:nil progress:nil success:^(NSURLSessionDataTask *task, id responseObject) {
            json_promotion = responseObject;

            [[UNUserNotificationCenter currentNotificationCenter] setDelegate:self];

            NSString *strProTitle = [json_promotion valueForKey:@"title"];

            NSLog(@"strProTitle - %@",strProTitle);
            //Will get string "Promotion Today!" which is CORRECT
//If i put NSString *strProTitle = @"testing here", error will not appear.

            [[PushNotificationManager sharedInstance]graphicsPushNotificationWithTitle:strProTitle  subTitle:@"text here" body:@"desc here" identifier:@"2-1" fileName:@"Graphics.jpg" timeInterval:3 repeat:NO];

Any idea? Please help.

Upvotes: 0

Views: 83

Answers (1)

Rishab
Rishab

Reputation: 1957

Your error message is basically telling you are passing an array instead of string.

I am guessing this is happening becuase valueForKey is returning an array. While parsing an object it's better to type check.

You could instead use json_promotion[0][@"title"].

If you want a better syntax I would use the following

NSString *strProTitle;
if([json_promotion isKindOfClass:[NSArray class]] {
  id obj = json_promotion[0][@"title"]
  if ([obj isKindOfClass: [NSString class]]) {
    strProTitle = obj;
  }
}

Upvotes: 1

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