How to specify a size to a UIAlert - iphone

Question

I am trying to display a UIImage in a UIAlert.
I want to display it nearly fullscreen. For example my image has a 300x450px size.
Well I add it as a subview to my UIAlert.
But the UIAlert has default coordinates to keep it centered.
So I can add a image bigger than the UIAlert frame, but it covers the UIAlert...
I tried to specify a frame for my UIAlert, but it has no effect on it.
In fact I would like to add my image as a real content of the UIAlert, as well as simple text.
Is this possible ?

Answer 1

Consider writing your own Dialog popup instead of messing with the UIAlertView. If you want the 'bounce-in' animation that can easily be achieved using transform animations. Here is a simple popup dialog box I've just made.
To test it out create a new View-Based Application project and add this class. Then you can test it by adding the 'usage' code below to your *ViewController.m
This is a very simple example to demo the theory. It would make more sense to have a static method in SimpleDialog that shows the popup, but I didn't want to make the example overly complex.
SimpleDialog.h
#import <UIKit/UIKit.h>
#interface SimpleDialog : UIView
{
}
- (void) show;
#end
SimpleDialog.m
#import "SimpleDialog.h"
#define BOUNCE_SPEED 1
#implementation SimpleDialog
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
// Initialization code
self.backgroundColor = [UIColor greenColor];
UIButton* closeButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
closeButton.frame = CGRectMake(0, 0, 200, 20);
closeButton.center = self.center;
[closeButton setTitle:#"Close" forState:UIControlStateNormal];
[closeButton addTarget:self action:#selector(hide) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:closeButton];
}
return self;
}
- (void) show
{
UIWindow* window = [UIApplication sharedApplication].keyWindow;
if (!window)
{
window = [[UIApplication sharedApplication].windows objectAtIndex:0];
}
[window addSubview:self];
self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.001, 0.001);
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.2*BOUNCE_SPEED];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(bounceInStopped)];
self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.1, 1.1);
[UIView commitAnimations];
}
- (void)bounceInStopped
{
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.15*BOUNCE_SPEED];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(bounceOutStopped)];
self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.9, 0.9);
[UIView commitAnimations];
}
- (void)bounceOutStopped
{
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.15*BOUNCE_SPEED];
self.transform = CGAffineTransformIdentity;
[UIView commitAnimations];
}
- (void) hide
{
[self removeFromSuperview];
}
#end
Usage
- (void)viewDidLoad
{
[super viewDidLoad];
UIButton* popButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
popButton.frame = CGRectMake(0, 0, 200, 20);
popButton.center = self.view.center;
[popButton setTitle:#"Pop" forState:UIControlStateNormal];
[popButton addTarget:self action:#selector(showIt) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:popButton];
}
- (void) showIt
{
SimpleDialog* simple = [[SimpleDialog alloc] initWithFrame:CGRectMake(0, 0, 300, 400)];
simple.center = self.view.center;
[self.view addSubview:simple];
[simple show];
[simple release];
}

Answer 2

Yes this is possible.
But it requires to customize the UIAlertView.
Using UIAlertView customization you can add anything.