Change color for UIAlert

[minsi]

Hi,

How do I change the color of the pop up message box using UIAlert?

[NewiPhoneDeveloper]

Originally Posted by minsi

Hi,

How do I change the color of the pop up message box using UIAlert?

I don't think you can do that. You will have to create your own custom "Alert". For example: Do all the needed graphics and then use a UIView to display them when needed.

[minsi]

Originally Posted by NewiPhoneDeveloper

I don't think you can do that. You will have to create your own custom "Alert". For example: Do all the needed graphics and then use a UIView to display them when needed.

Hi,
Thank you for your prompt reply.
What are the needed graphics for creating a custom "Alert"?
Thanks!

[oxigen]

Background of AlertView is an image And you can change this image

UIAlertView *theAlert = [[[UIAlertView alloc] initWithTitle:@"Atention"
message: @"YOUR MESSAGE HERE", nil)
delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] autorelease];

[theAlert show];

UILabel *theTitle = [theAlert valueForKey:@"_titleLabel"];
[theTitle setTextColor:[UIColor redColor]];

UILabel *theBody = [theAlert valueForKey:@"_bodyTextLabel"];
[theBody setTextColor:[UIColor blueColor]];

UIImage *theImage = [UIImage imageNamed:@"Background.png"];
theImage = [theImage stretchableImageWithLeftCapWidth:16 topCapHeight:16];
CGSize theSize = [theAlert frame].size;

UIGraphicsBeginImageContext(theSize);
[theImage drawInRect:CGRectMake(0, 0, theSize.width, theSize.height)];
theImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

[[theAlert layer] setContents:[theImage CGImage]];

[kohjingyu]

Wow cool. I didn't know that. Btw, you can also change the position of the UIAlertView with transform.

EDIT: Is this allowed by Apple?

[minsi]

Originally Posted by oxigen

Background of AlertView is an image And you can change this image

Thank you. It works!
Where is the Background.png image stored?

[williamsbm2000]

Originally Posted by minsi

Thank you. It works!
Where is the Background.png image stored?

It should be stored in the project folder of your app. If you drag the Background.png file into your XCode project, it should allow you to copy it to the project folder while also adding it to your project. Hope this helps...
Brian

[drewag]

Originally Posted by kohjingyu

Wow cool. I didn't know that. Btw, you can also change the position of the UIAlertView with transform.

EDIT: Is this allowed by Apple?

Yes, from my experience it is allowed to move an alert view. Or at least they had no problem when I moved it out of the way of the keyboard which may be a different story :-P, but I don't think they would have a problem with it.

[kohjingyu]

Originally Posted by drewag

Yes, from my experience it is allowed to move an alert view. Or at least they had no problem when I moved it out of the way of the keyboard which may be a different story :-P, but I don't think they would have a problem with it.

I meant is changing the color allowed by Apple?

[Jango]

Hi,

I'm using the similar code to change the color of the UIAlertView.

Just that I'm getting an warning message that goes something like this:

no method definition found for setContents

Messages without a matching signature method will be assumed to return id....

can anyone suggest something...

[drewag]

Originally Posted by Jango

Hi,

I'm using the similar code to change the color of the UIAlertView.

Just that I'm getting an warning message that goes something like this:

no method definition found for setContents

Messages without a matching signature method will be assumed to return id....

can anyone suggest something...

Please show us the code where you are getting the warning.

[Jango]

Originally Posted by drewag

Please show us the code where you are getting the warning.

I'm allocating the UIAlertView as per my requirement in the code.

- (void)willPresentAlertViewUIAlertView *)alertView // before animation and showing view
{
UIImage *theImage2 = [UIImage imageNamed:@"box 2.png"];
CGSize theSize = [alertView frame].size;

UIGraphicsBeginImageContext(theSize);
[theImage2 drawInRect:CGRectMake(0, 0, theSize.width, theSize.height)];
theImage2 = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

[[alertView layer] setContents:[theImage2 CGImage]];
// Getting a warning message here that says,no '-setContents method found
}

It works fine, just that I'm getting a warning that I dont know about...

[IVSCEO]

Originally Posted by oxigen

Background of AlertView is an image And you can change this image

How do you change the color of the button text?????

[IVSCEO]

Originally Posted by oxigen

Background of AlertView is an image And you can change this image

How do you change the color of the button text?

[tenveer]

FIrst you have to get the array that holds the buttons :

NSMutableArray *buttonArray = [alert valueForKey:@"_buttons"];

Then you call:

[alert show];

After that, and you do have to do it in this order, you call:

[[buttonArray objectAtIndex:0] setTitleColor:[UIColor redColor] forState:UIControlStateNormal];

Of course you can change '0' to the index of the button you want to affect and use whichever UIColor you want.