无法为半成形图层设置图像

1.i创建了CAshapelayer，并且还在CAshapelayer中插入了一个成功的标签，但现在我试图在图层中设置图像，但它不起作用。无法为半成形图层设置图像

帮助我放大此图层的动画。

 CAShapeLayer *circleLayer = [CAShapeLayer layer]; 
[circleLayer setPath:[[UIBezierPath bezierPathWithOvalInRect:CGRectMake(50, 250, 100, 100)] CGPath]]; 
circleLayer.contents = (id)[[UIImage imageNamed:@"001-forward.png"] CGImage]; 
circleLayer.contentsGravity=kCAGravityResize; 
    // circleLayer.masksToBounds = YES; 
[circleLayer setStrokeColor:[[UIColor brownColor] CGColor]]; 
[circleLayer setFillColor:[[UIColor clearColor] CGColor]]; 

[[self.view layer] addSublayer:circleLayer]; 
CATextLayer *label = [[CATextLayer alloc] init]; 
[label setFont:@"Helvetica-Bold"]; 
[label setFontSize:15]; 
[label setFrame:CGRectMake(50,300, 100, 50)]; 
[label setString:@"GM"]; 
[label setAlignmentMode:kCAAlignmentCenter]; 
[label setForegroundColor:[[UIColor greenColor] CGColor]]; 

[circleLayer addSublayer:label];

来源

2017-08-27 Abhiram

从图像名称中删除.png，然后尝试代码，看它是否设置图像？ – 3stud1ant3

你放大动画的意思，你可以发布一个gif或我们可以看到的东西吗？ –

@ 3stud1ant3没有任何变化 – Abhiram

主要的问题在这里是你不容添加UIImage作为内容CAShape Layer，因为你可以在这里看到UIImage as CAShapeLayer contents所以我修改了你的代码添加到图像和CALayer加那层您circleLayer

CGRect frame = CGRectMake(50, 250, 100, 100); 
// Do any additional setup after loading the view, typically from a nib. 
CAShapeLayer *circleLayer = [CAShapeLayer layer]; 
[circleLayer setPath:[[UIBezierPath bezierPathWithOvalInRect:frame] CGPath]]; 
circleLayer.contentsGravity=kCAGravityResize; 
// circleLayer.masksToBounds = YES; 
[circleLayer setStrokeColor:[[UIColor brownColor] CGColor]]; 
//[circleLayer setFillColor:[[UIColor clearColor] CGColor]]; 

[[self.view layer] addSublayer:circleLayer]; 
CATextLayer *label = [[CATextLayer alloc] init]; 
[label setFont:@"Helvetica-Bold"]; 
[label setFontSize:15]; 
[label setFrame:CGRectMake(50,300, 100, 50)]; 
[label setString:@"GM"]; 
[label setAlignmentMode:kCAAlignmentCenter]; 
[label setForegroundColor:[[UIColor greenColor] CGColor]]; 

CALayer * imageLayer = [CALayer layer]; 
[imageLayer setContents: (__bridge id _Nullable)([[UIImage imageNamed:@"test"] CGImage])]; 
imageLayer.frame = frame; // Define a frame 
imageLayer.contentsGravity=kCAGravityResize; 

CAShapeLayer *maskLayer = [CAShapeLayer layer]; 
[maskLayer setPath:[[UIBezierPath bezierPathWithOvalInRect:CGRectMake(0, 0, frame.size.width, frame.size.height)] CGPath]]; 
imageLayer.mask = maskLayer; 

[circleLayer addSublayer:imageLayer]; 
[circleLayer addSublayer:label];

来源

2017-08-27 05:30:55

谢谢你的工作正常我需要使这个circlelayer放大动画 – Abhiram

试试这个

CAShapeLayer *circleLayer = [CAShapeLayer layer]; 
[circleLayer setPath:[[UIBezierPath bezierPathWithOvalInRect:CGRectMake(50, 250, 100, 100)] CGPath]]; 
circleLayer.bounds = [[UIBezierPath bezierPathWithOvalInRect:CGRectMake(50, 250, 100, 100)] bounds]; 
circleLayer.masksToBounds = YES; 
[circleLayer setStrokeColor:[[UIColor brownColor] CGColor]]; 
//Use .png if you store your image outside of .xcassets 
circleLayer.fillColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"001-forward.png"]].CGColor; 

[[self.view layer] addSublayer:circleLayer];

来源

2017-08-27 05:36:22

无法为半成形图层设置图像

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