UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 50, 200, 50)];
label.text = @"渐变文字展示";
[self.view addSubview:label];
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.frame = label.frame;
UIColor *color_2 = [UIColor colorWithRed:45/255.0 green:240/255.0 blue:219/255.0 alpha:1.0];
UIColor *color_1 = [UIColor colorWithRed:255/255.0 green:225/255.0 blue:50/255.0 alpha:0.5];
gradientLayer.colors = @[(__bridge id)color_1.CGColor,
(__bridge id)color_2.CGColor];
gradientLayer.startPoint = CGPointMake(0, 0);
gradientLayer.endPoint = CGPointMake(0, 1);
[self.view.layer addSublayer:gradientLayer];
gradientLayer.mask = label.layer;
label.frame = gradientLayer.bounds;
效果展示：
image.png
