Code copied from one file to another will not build

Question

I have some code that sets a border around a UITextView. It builds correctly in one class; when I take that code and copy it to another class (changing the object name), it no longer builds, saying "Property 'borderWidth' cannot be found in forward class object 'CALayer *'" (the same message for the other two lines of code). I have done a clean, re-build and nothing helps. Why is this happening? and how do I fix it? ``` - (void)viewDidLoad { [super viewDidLoad]; //-- draw box around notes field orderNotes.layer.borderWidth = 1.0f; orderNotes.layer.borderColor = [[UIColor blackColor] CGColor]; orderNotes.layer.cornerRadius = 4; ``` } Object "orderNotes" is defined as UITextView. There are no other errors.

Accepted Answer

You need to:

```
#import <QuartzCore/QuartzCore.h>
```

Otherwise, the `layer` property is not visible to you.

Code copied from one file to another will not build

Solution

Problem