Use timer in a UIImageView Subclass - objective-c

Question

I want to change the picture of my custom UIImageView Subclass by a timer. But it doesn't work. Can you help me?
This is my code:
-(id)initWithCoder:(NSCoder *)aDecoder {
self = [super initWithCoder:aDecoder];
if (self) {
[self update];
}
return self;
}
-(void)update {
self.image = [UIImage imageNamed:#"Green.png"];
[NSTimer scheduledTimerWithTimeInterval:5 target:self selector:#selector(change) userInfo:nil repeats:YES];
}
-(void)change {
self.image = [UIImage imageNamed:#"Red.png"];
}
Thanks!

Answer 1

use image property also to assign any image to imageView small rectification see below code.
Also do not give variable name same as its class property.
-(void)update {
self.image.image = [UIImage imageNamed:#"Green.png"];
[NSTimer scheduledTimerWithTimeInterval:5 target:self selector:#selector(change) userInfo:nil repeats:YES];
}
-(void)change {
self.image.image = [UIImage imageNamed:#"Red.png"];
}
self.image.image peoperty added here
Edit:
change your property from UIImage to UIImageView like see below
#property (strong, nonatomic) IBOutlet UIImageView *image;
.h Header file
#import <UIKit/UIKit.h>
#interface orientation : UIViewController
#property (strong, nonatomic) IBOutlet UIImageView *image;
#end
.m Message file
#import "orientation.h"
#interface orientation ()
#end
#implementation orientation
- (void)viewDidLoad {
[super viewDidLoad];
[self update];
// Do any additional setup after loading the view.
}
-(void)update {
self.image.image = [UIImage imageNamed:#"investment1.png"];
[NSTimer scheduledTimerWithTimeInterval:5 target:self selector:#selector(change) userInfo:nil repeats:YES];
}
-(void)change {
self.image.image = [UIImage imageNamed:#"logout.png"];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end