在GLKView类型的对象上找不到属性'layer‘

Question

在类型为'ViewController *的对象上找不到属性'layer‘，其中ViewController的类型为GLKView，并且我正在我的opengl项目中导入以下文件

QuartzCore/QuartzCore.h

OpenGLES/ES2/gl.h

OpenGLES/ES2/glext.h

ViewController.h的代码

@interface ViewController : GLKViewController

{

    CAEAGLLayer* eaglLayer;

}

@end

ViewController.m

@interface ViewController ()

@property (nonatomic, strong) EAGLContext *context;
@property (nonatomic, strong) GLKBaseEffect *baseEffect;

@end 

@implementation ViewController

- (void)viewDidLoad
{
 [super viewDidLoad];
 // Do any additional setup after loading the view, typically from a nib.
 self.context = [[EAGLContext alloc] initWithAPI: kEAGLRenderingAPIOpenGLES2];
 GLKView *view = (GLKView *) self.view;
 view.context = self.context;
[EAGLContext setCurrentContext:self.context];

}
+ (Class)layerClass
{
   return [CAEAGLLayer class];
}

- (void)createLayer
{
 eaglLayer = (CAEAGLLayer *) self.layer;
 eaglLayer.opaque = YES;
}

请告诉我哪里做错了？

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Answer 1

您需要引用视图，而不是控制器。

_eaglLayer = (CAEAGLLayer*) self.view.layer;

应该行得通。