Question

I am trying to create a framework for all of the custom objects and views that I have made and use often, by creating custom delegate classes and custom objects. Everything has gone well except when trying to get NSTimers to call the correct method inside of the delegate class.

Here is the basic setup.

-(void) startTimers {
    NSTimer *timer1 = [NSTimer timerWithTimeInterval:5 target:self selector:@selector(doSomething:) userInfo:nil repeats:YES];
    NSTimer *timer2 = [NSTimer timerWithTimeInterval:5 target:self selector:@selector(doSomethingElse:) userInfo:nil repeats:YES];
}

I can easily just call this method and whatever, but when this time fires it does not call the method I defined as the selector. I am pretty sure it has something to do with the delegate value and which class it is making as the delegate.

Note the file I am writing in is a subclass of UIView, which is set up to be a delegate using the @protocol tags and all of that.

What should I set as the target when defining my timers to get them to call the correct methods.

EDIT:

Here is an example of what I am doing:

ExampleView.h

#import <UIKit/UIKit.h>

@protocol ExampleViewDelegate;

@interface ExampleView : UIView {
    NSTimer *timer;
}
-(void) initWithStuff:(id)stuff andFrame:(CGRect)frame;
-(void) testTimer;
@end

@protocol ExampleViewDelegate

-(void) someDelegateFunction;
@end

ExampleView.m

#import "ExampleView.h"

@implementation ExampleView


-(id) initWithStuff:(id)stuff andFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    timer = [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(testTimer) userInfo:nil repeats:YES];
    return self;
}

-(void) testTimer {
    NSLog(@"Timer Fired");
}

@end

If you add this custom view into a viewcontroller it will never call that testTimer function and print “Timer Fired” So what I am thinking is that when I set the delegate for this timer, it is actually setting it to something else. Any ideas?

Answer 1

NSTimer *timer1 = [NSTimer scheduledTimerWithTimeInterval:5 target:self selector:@selector(doSomething:) userInfo:nil repeats:YES];

Notice the method is called “scheduledTimerWithTimeInterval”