CODEWITHSUNDEEP
iosiphoneobjective-cselectornstimer
kumar
kumar

Reputation: 117

Undeclared selector warnining in ios 7

I'm tying create a welcome label using NSTimer but its showing the through some warnings

like

undeclared selector hidelable and unused variable timer

I have not used the NSTimer before can one pls tell me where im doing wrong and wt is the right method to do it.I need to give a welcome message when app load after few minities it has to disappear

i have tried this one im not able to get pls help me

this is the code i have to used in the view didload

NSTimer  * timer = [NSTimer scheduledTimerWithTimeInterval:60 target:self selector:@selector(hideLabel:) userInfo:nil repeats:NO];

in storyboard i have used ib label which i want to display message 

@property (strong, nonatomic) IBOutlet UILabel *wel;

please any one tell wt is proper way to make this one..

Upvotes: 1

Views: 8442

Answers (4)

Mani
Mani

Reputation: 17595

According to your code, You didn't use timer anywhere else, and didn't fire repeatedly. Then you can use this code as below..

[self performSelector:@selector(hideLabel:) withObject:yourLabel afterDelay:60];

Importantly, define your target method,

-(void)hideLabel:(UILabel*)label
{
    // your code here...
     label.text = @"Fired...";
}

Upvotes: 1

Mohit
Mohit

Reputation: 3416

Try this 

    [NSTimer scheduledTimerWithTimeInterval:0.3 target:self selector:@selector(timerCalled) userInfo:nil repeats:YES];
    -(void)timerCalled
    {
         NSLog(@"Timer Called...");
    }

Upvotes: 0

santhu
santhu

Reputation: 4792

you have not declared hideLabel method.hence it gives that warning

[NSTimer scheduledTimerWithTimeInterval:60 target:self selector:@selector(hideLabel:) userInfo:nil repeats:NO];

-(void)hideLabel:(NSTimer *)timer{
 myLabel.hidden=YES;
}

Upvotes: 4

iPatel
iPatel

Reputation: 47099

If you does not need to use (extra use of) object of NSTimer then you should create NSTimer such like, 

[NSTimer scheduledTimerWithTimeInterval:60.0f    target:self selector:@selector(hideLabel:) userInfo:nil    repeats:NO];

And then you need to declare timer's method other wise after active (60 sec.) timer you will be get error.

- (void)hideLabel:(NSTimer *)theTimer
{
   // Timer method code;
}

Upvotes: 0

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