Question

我需要将标签与CATextLayer相关联，所以我想这个：

·H

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

typedef struct textLayerWithTag
{
    CATextLayer *textLayer;
    int tag;
}textLayerWithTag;

.m`

textLayerWithTag textLayer1;

textLayer1.tag = 0;
textLayer1.textLayer = [[CATextLayer alloc] init];
textLayer1.textLayer.string = @"aaaa";
textLayer1.textLayer.frame = CGRectMake(0.f, 10.f, 320.f, 32.f);

[self.view.layer addSublayer:textLayer1.textLayer];`

但是当我尝试构建它时，我有这个错误：

"_OBJC_CLASS_$_CATextLayer", referenced from:
objc-class-ref-to-CATextLayer in StructViewController.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

有什么想法吗？：/

Answer 1

您可能没有将QuartzCore和CoreText框架链接到您的项目。右键单击XCode中的Frameworks Group，然后执行add-＆gt; Existing Frameworks ...选择QuartzCore和CoreText，你应该好好去！

可以在c结构中使用CATextLayer吗？

1 个答案: