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Editorial Team
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Asked: 2026-05-22T00:56:36+00:00

I place a play.png image onto my view. When the view initially loads, the

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I place a play.png image onto my view. When the view initially loads, the iPhone 4 grabs the corresponding play@2x.png file and it looks great. However, when I tap the play button my code swaps it out for the pause.png file. Then, when I tap the pause.png to bring back the play.png it uses the original play.png file (not the @2x version like I thought it would automatically reference).

This is the code I tried to use:

[button setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal];

So, if I swap files after the initial view load, do I have to manually specify the @2x version inside an IF statement? If so, is the UIScreen.scale the best attribute to use for this?

I’m currently using code like this:

if ([UIScreen mainScreen].scale > 1.0) 
{ 
    [button setImage:[UIImage imageNamed:@"play@2x.png"] forState:UIControlStateNormal]; 
} 
else 
{ 
    [button setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal]; 
}

It’s working fine but having the IF statement in there is annoying and seems a little fragile.

Thanks in advance to all you smarties out there.

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1 Answer

  1. Editorial Team

    I can confirm that this is a problem with the 4.0 device. The problem is not that it does not load the @2x image, it does indeed, but still displays it at 72 DPI (causing it to be blurry).

    This bug is fortunately fixed in 4.1 (tested in the emulator).

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