UIButton not changing anything with #selector - new Issue - ios

Question

Need help. I am trying to change an image of an ImageView using a programmed button. I copied some of the sample codes out here. The sitting on highlighted button works but not doing anything else when clicked. Thanks.
Thanks for the replies. I managed to change the photos but created more problem. I believe it is clear that that I am new to Xcode.
New problems:
1. The new image stays on top so i cannot access the button.
2. I would like to have the image changed only when the button is highlighted.
3. With the new image, it created warning: "Hides instance variable" on the relayImages properties. Thanks again.
.h file
-(void)changeLabel:(UIButton *)sender;
-(void)addMyButton;
-(void)addMyImages;
-(void)addMyLabel;
#property (nonatomic) UIButton *playButton;
#property (nonatomic) UIImageView *relayImages;
#property (nonatomic, strong) UILabel *checkStatusLabel;
#synthesize relayImages;
.m file
- (void)viewDidLoad
{
[super viewDidLoad];
[self addMyImages];
[self addMyButton];
[self addMyLabel];
// Do any additional setup after loading the view, typically from a nib.
}
-(void)addMyButton
{
UIButton *playButton = [[UIButton alloc] initWithFrame:CGRectMake(100, 348, 20, 78)];
UIImage *offState = [UIImage imageNamed:#"PBNoOff.png"];
[playButton setBackgroundImage:offState forState:UIControlStateNormal];
UIImage *onState = [UIImage imageNamed:#"PBNoOn.png"];
[playButton setBackgroundImage:onState forState:UIControlStateHighlighted];
[playButton addTarget:self action:#selector(changeLabel:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:playButton];
}
-(void)changeLabel:(UIButton *)sender
{
UIImage *image1 = [UIImage imageNamed:#"1_2RelaysOn.png"];
UIImageView *relayImages = [[UIImageView alloc] initWithImage:image1];
relayImages.frame = CGRectMake(0, 0, 320, 480);
relayImages.backgroundColor = [UIColor whiteColor];
[self.view addSubview:relayImages];
[self.view addSubview:_playButton];
}
-(void)addMyImages
{
UIImage *image = [UIImage imageNamed:#"1_2RelaysOff.png"];
UIImageView *relayImages = [[UIImageView alloc] initWithImage:image];
relayImages.frame = CGRectMake(0, 0, 320, 480);
relayImages.backgroundColor = [UIColor whiteColor];
[self.view addSubview:relayImages];
}
-(void)addMyLabel
{
UILabel *checkStatusLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 50, 200, 30)];
checkStatusLabel.backgroundColor = [UIColor greenColor];
checkStatusLabel.textColor = [UIColor whiteColor];
[self.view addSubview:checkStatusLabel];
}

Answer 1

try this i am created custom imageView
.m file
-(void)addMyButton
{
_playButton = [[UIButton alloc] initWithFrame:CGRectMake(100, 348, 60, 50)];
[_playButton setTitle:#"button" forState:UIControlStateNormal];
[_playButton setBackgroundColor:[UIColor grayColor]];
UIImage *offState = [UIImage imageNamed:#"1.jpg"];
// [playButton setBackgroundImage:offState forState:UIControlStateNormal];
// UIImage *onState = [UIImage imageNamed:#"PBNoOn.png"];
[_playButton setBackgroundImage:offState forState:UIControlStateHighlighted];
[_playButton addTarget:self action:#selector(changeLabel:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:_playButton];
}
-(void)changeLabel:(UIButton *)sender
{
UIImage *image1 = [UIImage imageNamed:#"2.jpg"];
relayImages = [[UIImageView alloc] initWithImage:image1];
relayImages.frame = CGRectMake(20, 100, 100, 100);
relayImages.backgroundColor = [UIColor whiteColor];
[self.view addSubview:relayImages];
}
-(void)addMyImages
{
UIImage *image = [UIImage imageNamed:#"3.jpg"];
UIImageView *someImages = [[UIImageView alloc] initWithImage:image];
someImages.frame = CGRectMake(20, 200, 100, 100);
someImages.backgroundColor = [UIColor whiteColor];
[self.view addSubview:someImages];
}
-(void)addMyLabel
{
_checkStatusLabel = [[UILabel alloc] initWithFrame:CGRectMake(100, 250, 100, 30)];
_checkStatusLabel.backgroundColor = [UIColor greenColor];
_checkStatusLabel.textColor = [UIColor whiteColor];
[self.view addSubview:_checkStatusLabel];
}
.h file
-(void)changeLabel:(UIButton *)sender;
-(void)addMyButton;
-(void)addMyImages;
-(void)addMyLabel;
#property (nonatomic) UIButton *playButton;
#property (nonatomic) UIImageView *relayImages;
#property (nonatomic, strong) UILabel *checkStatusLabel;
and viewdidload
[self addMyButton];
[self addMyImages];
[self addMyLabel];