Question

I have a UILabel where I am saying whether is is an “A Day, B Day, etc.” Our school goes on an A-G day rotation so this is telling users what day today is. (The days are pulled from a large NSDictionary that matches up letter days with real dates)

I want to display a different image depending on what day it is. so something like

// (in pseudo-code) 

if [UILabel == @"A Day"]{ 
    image.image = [UIImage imageNamed:@"Aday.jpg"];
}

I am putting A Day into my label like this: [dictionary setObject:@"A Day" forKey:@"2012-05-15"]; then doing [letterday setText:[dictionary objectForKey:LetterDay]];.

Is there a way to use this same dictionary and do what I am trying above?

What would be the correct way to do this?

Thanks!

edit: this is what I have…still not working. Any tips?

NSMutableDictionary *imageforlabel = [[NSMutableDictionary alloc] init];


                [imageforlabel setObject:[UIImage imageNamed:@"ADay.png"] forKey:@"A Day"];
                [imageforlabel setObject:[UIImage imageNamed:@"BDay.png"] forKey:@"B Day"];
                [imageforlabel setObject:[UIImage imageNamed:@"CDay.png"] forKey:@"C Day"];
                [imageforlabel setObject:[UIImage imageNamed:@"DDay.png"] forKey:@"D Day"];
                [imageforlabel setObject:[UIImage imageNamed:@"EDay.png"] forKey:@"E Day"];
                [imageforlabel setObject:[UIImage imageNamed:@"FDay.png"] forKey:@"F Day"];
                [imageforlabel setObject:[UIImage imageNamed:@"GDay.png"] forKey:@"G Day"];

rotationday.image = [imageforlabel objectForKey:letterday.TEXT];

Answer 1

Define an ivar NSDictionary *imageForLabel, and set it up as follows in your designated initializer:

imageForLabel = [NSDictionary dictionaryWithObjectsAndKeys:
    [UIImage imageNamed:@"Aday.jpg"], @"A Day"
,   [UIImage imageNamed:@"Bday.jpg"], @"B Day"
,   [UIImage imageNamed:@"Cday.jpg"], @"C Day"
,   // ...and so on
,   nil];

Then at runtime look up the imgage from the NSDictionary:

UIImage *image = [imageForLabel objectForKey:label.text];