CODEWITHSUNDEEP
iphoneiosobjective-cuibutton
KDeogharkar
KDeogharkar

Reputation: 10959

UIButton background image not changing

I want to change button background image as per the web service response. if in response I get unread messages to true then image will different and if there is no unread messages image will be different. I am getting the response very well but not able to change my button's background image.

This is the snippet I am using

if(unread>0){
    [badgeTitle setBackgroundImage:[UIImage imageNamed:@"unread.png"] forState:UIControlStateNormal];
}
else{
    [badgeTitle setBackgroundImage:[UIImage imageNamed:@"read.png"] forState:UIControlStateNormal];
}

Upvotes: 4

Views: 8992

Answers (8)

Hitesh
Hitesh

Reputation: 552

The solution can be very simple, if you look at it. Keep a global UIButton and not a local one. This helps, as when the web request returns back a response, the button needs to be present in-scope and not get removed from the memory.

So use,

self.myButton = [UIButton buttonWithType:UIButtonTypeCustom];

[self.myButton setBackgroundImage:[UIImage imageNamed:@"unread.png"] forState:UIControlStateNormal];

OR

[self.myButton setImage:[UIImage imageNamed:@"unread.png"] forState:UIControlStateNormal];

And, if you checking on the click of a button, then follow the steps :

-(IBAction)checkForMsgCount: (id)sender
{
  UIButton *buttonObj = (UIButton*)sender;

[buttonObj setBackgroundImage:[UIImage imageNamed:@"unread.png"] forState:UIControlStateNormal];
}

This changes the background image, for the button that is responding to the function.

Upvotes: 7

tdios
tdios

Reputation: 225

after setting the background image

[badgeTitle setNeedsLayout];

Upvotes: 0

Yucel Bayram
Yucel Bayram

Reputation: 1663

[YourBtn setImage:[UIImage imageNamed:@"your.png"] forState:UIControlStateNormal];

try it please.

Can you also try this for check it out if you really have this pictures in your bundle ?

        NSString *bundlePath = [[NSBundle mainBundle] bundlePath];
        NSString *imagePath = [[NSString alloc] initWithFormat:@"%s/yourButton.png", [bundlePath  UTF8String]];


if ([[NSFileManager defaultManager] fileExistsAtPath:imagePath]) {
    NSLog(@"image exists");
}
else{
    NSlog(@"image Does Not Exist");
      }

Upvotes: 1

Maulik Kundaliya
Maulik Kundaliya

Reputation: 462

UIButton *btn = [[UIButton alloc]init];
    btn.frame = CGRectMake(50, 50, 100, 50);
    [btn setTitle:@"ok" forState:UIControlStateNormal];
    [btn setBackgroundImage:[UIImage imageNamed:@"icon.png"] forState:UIControlStateNormal];
    btn.backgroundColor=[UIColor blueColor];

I hope this works for u....

Upvotes: 0

user1288192
user1288192

Reputation:

please try code below

if(unread>0){
    [badgeTitle setBackgroundImage:[UIImage imageNamed:@"unread.png"] forState:UIControlStateNormal];
    [badgeTitle setBackgroundImage:[UIImage imageNamed:@"unread.png"] forState :UIControlStateSelected];
}
else{
    [badgeTitle setBackgroundImage:[UIImage imageNamed:@"read.png"] forState:UIControlStateNormal];
    [badgeTitle setBackgroundImage:[UIImage imageNamed:@"read.png"] forState :UIControlStateSelected];
}

Upvotes: 1

Rajneesh071
Rajneesh071

Reputation: 31073

First check IBOutlet connection of your button :)

And set your code after getting data from web service i.e. after getting value of unread

if(unread>0){
    [badgeTitle setBackgroundImage:[UIImage imageNamed:@"unread.png"] forState:UIControlStateNormal];
}
else{
    [badgeTitle setBackgroundImage:[UIImage imageNamed:@"read.png"] forState:UIControlStateNormal];
}

Upvotes: 0

Shamsudheen TK
Shamsudheen TK

Reputation: 31339

Set background images for UIControlStateNormal and UIControlStateSelected as separate lines.

if(unread>0){

   [badgeTitle setBackgroundImage:[UIImage imageNamed:@"unread.png"] UIControlStateNormal];

   [badgeTitle setBackgroundImage:[UIImage imageNamed:@"unread.png"] UIControlStateSelected];
} else {

   [badgeTitle setBackgroundImage:[UIImage imageNamed:@"read.png"] UIControlStateNormal];

   [badgeTitle setBackgroundImage:[UIImage imageNamed:@"read.png"] UIControlStateSelected];
}

Upvotes: 0

Lithu T.V
Lithu T.V

Reputation: 20021

[badgeTitle setBackgroundImage:[UIImage imageNamed:@"unread.png"] forState:UIControlStateNormal|UIControlStateSelected];

are you adding the button image for UIControlStateNormal or UIControlStateSelected

try 

[badgeTitle setBackgroundImage:[UIImage imageNamed:@"unread.png"] forState:UIControlStateNormal];

find whether the image exist and added properly to the bundle and The name is correct

Upvotes: 0

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