How to call parameterized method with more than 2 parameters to the selector

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Arguments in @selector

How to call parameterized method with more than 2 parameters to the selector, say for EX i have a method like this

-(void)GetTheData:(NSString *)str1 :(NSString *)str2

Now i need to call this method in the following timer inside the @selector.How can i call??

NSTimer  *timer = [NSTimer scheduledTimerWithTimeInterval:0.0 target:self selector:@selector(**HowCanICallHere**) userInfo:nil repeats:YES];

[Plz go through this](http://stackoverflow.com/questions/1349740/arguments-in-selector) — Mehul Mistri, Dec 04 '12 at 12:42
It's bad practise to use that style of function name. You should give each part of the function a name. In your example there is no real way of knowing what str2 is or what sort of data can be expected from it. — Fogmeister, Dec 04 '12 at 13:28

score 2 · Answer 1 · answered Dec 04 '12 at 13:07

Pass NSDictionaryas a parameter to the target method

 NSDictionary *dictionary = [NSDictionary dictionaryWithObjectsAndKeys:@"1",@"parameter1",@"2",@"parameter2", nil];

        [ NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(myFunction:) userInfo: dictionary repeats:NO];

Further retrieving the parameters in the target function

-(void)myFunction:(NSTimer *)timer{
    NSLog(@" dict : %@",timer.userInfo);
}

This way you may multiple parameters can be passed by adding more keyValue pairs in the NSDictionary

score 2 · Answer 2 · answered Dec 04 '12 at 13:13

I'm not sure that you can. For the same reason "userInfo" option is given to us, to pass more than one parameter. You can easily implement that by creating a dictionary with two objects:

NSDictionary *dict = [NSDictionary dictionaryWithObjects:objArray andKeys:keyArray];

and pass that dictionary as userInfo object to the method:

NSTimer  *timer = [NSTimer scheduledTimerWithTimeInterval:0.0 target:self selector:@selector(urTimerMethod:) userInfo:dict repeats:YES];

define the method as:

- (void)urTimerMethod:(NSTimer *)timer {
        NSDictionary *dict = [timer userInfo];
}

score 0 · Answer 3 · answered Dec 04 '12 at 12:46

0

You can use this:

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:0.0 target:self selector:@selector(GetTheData::) userInfo:nil repeats:YES];

answered Dec 04 '12 at 12:46

Mohit_Jaiswal

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How to pass more than two parameters in this method as sujay has asked? – Atif Azad Dec 04 '12 at 12:50
Atif,I just show the way how we can use selector for multiple params.Now, what's your query? – Mohit_Jaiswal Dec 04 '12 at 12:53
Have you read the question? – Atif Azad Dec 04 '12 at 12:56
Atif, since userInfo is of 'id' type, so we can send two comma seperated objects as much I think.Let me do work for this. I'm sure it'll work. I never use multiple argument selector in NSTimer but normally I've used so many times.:) – Mohit_Jaiswal Dec 04 '12 at 12:57
Yeah, I've read he's asking how two make selector which have two arguments..:) – Mohit_Jaiswal Dec 04 '12 at 12:58
But, I think instead of it, it's better if he just use one argument here and just pass either the dict or array and get his object – Mohit_Jaiswal Dec 04 '12 at 13:00
See @Mehul's comment under the question, that's a better solution. – Atif Azad Dec 04 '12 at 13:15

score 0 · Answer 4 · answered Dec 04 '12 at 13:13

I know how to use it with a perform-selector, so maybe you could do it the following way:

-(void)GetTheData1:(NSString *)str1 GetTheData2:(NSString *)str2

NSTimer  *timer = [NSTimer scheduledTimerWithTimeInterval:0.0 target:self selector:@selector(mymethod) userInfo:nil repeats:YES];

- (void) mymethod {
[self performSelector:@selector(GetTheData1:GetTheData2:) withObject:str1 withObject:str2];

}

How to call parameterized method with more than 2 parameters to the selector

4 Answers4