渐变色

CAGradientLayer *gradientLayer =  [CAGradientLayer layer];//背景渐变色
gradientLayer.cornerRadius = kWid375(23);
gradientLayer.shadowOffset = CGSizeMake(0, 4);
gradientLayer.shadowOpacity = 1;
gradientLayer.shadowRadius = 10;
gradientLayer.shadowColor = [UIColor colorWithRed:0/255.0 green:0/255.0 blue:0/255.0 alpha:0.1].CGColor;
gradientLayer.frame = CGRectMake(0, 0, kWid375(287), kWid375(45));
gradientLayer.startPoint = CGPointMake(0, 0);
gradientLayer.endPoint = CGPointMake(1, 0);
gradientLayer.locations = @[@(0.5),@(1.0)];//渐变点
[gradientLayer setColors:@[(id)[RGB(255, 227, 173) CGColor],(id)[RGB(222, 197, 150) CGColor]]];//渐变数组
[_regist.layer addSublayer:gradientLayer];