Gradient color is truncated in UILabel in non-english language

- (void)viewDidLoad {

[super viewDidLoad];

UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 100, 0, 0)];

label.font = [UIFont boldSystemFontOfSize:30];

label.text = @"Your Name";

[label sizeToFit];

UIImage *gradientImage = [self.class gradientImageWithSize:label.frame.size beginColor:UIColor.redColor endColor:UIColor.yellowColor];

label.textColor = [UIColor colorWithPatternImage:gradientImage];

[self.view addSubview:label];

}

+ (UIImage *)gradientImageWithSize:(CGSize)size beginColor:(UIColor *)beginColor endColor:(UIColor *)endColor

{

CAGradientLayer *gradientLayer = [CAGradientLayer layer];

gradientLayer.colors = @[(__bridge id)beginColor.CGColor, (__bridge id)endColor.CGColor];

gradientLayer.startPoint = CGPointMake(0, 0.5);

gradientLayer.endPoint = CGPointMake(1, 0.5);

gradientLayer.frame = CGRectMake(0, 0, size.width, size.height);

UIGraphicsBeginImageContext(gradientLayer.bounds.size);

[gradientLayer renderInContext:UIGraphicsGetCurrentContext()];

UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

return image;

}

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I want to set gradient color to the text in UILabel but find that if the text is non-english language, the gradient color truncated. Images below will show the case. Is this a bug?

https://welkin-xie.oss-cn-shenzhen.aliyuncs.com/1.png

https://welkin-xie.oss-cn-shenzhen.aliyuncs.com/2.png

https://welkin-xie.oss-cn-shenzhen.aliyuncs.com/3.png

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Emmm, non-english can not be post here, I make a html with the text in the images. Just copy them and replace the line of

label.text = @"Your Name";

https://welkin-xie.oss-cn-shenzhen.aliyuncs.com/gradient-1.html