Property cannot be found on forward class object?

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I have a UIView and I‘m trying to set its layer properties.

self.colorSwatch = [[UIView alloc] initWithFrame:CGRectMake(400, 150, 100, 100)];
self.colorSwatch.layer.cornerRadius = 8; 

However, when I try to access the .layer.cornerRadius property, I get a warning that says "Property ‘cornerRadius‘ cannot be found in forward class object ‘CALayer *‘.

What does this mean? Thanks

It doesn‘t know what type of object the layer property is. Add #import <QuartzCore/QuartzCore.h> to the top of your file.

You also need to add the QuartzCore framework if you didn‘t do that already.

Property cannot be found on forward class object?

标签：style   blog   color   ar   for   sp   strong   div   on   

原文地址：http://www.cnblogs.com/ghgyj/p/4059037.html