iOS 技术篇:渐变色的简单实现方式

实现效果

//渐变设置
    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(,, [UIScreen mainScreen].bounds.size.width, )];
    UIColor *colorOne = [UIColor colorWithRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1.0];

    UIColor *colorTwo = [UIColor colorWithRed:/255.0 green:/255.0 blue:/255.0 alpha:.];

    NSArray *colors = [NSArray arrayWithObjects:(id)colorOne.CGColor, (id)colorTwo.CGColor, nil];

    CAGradientLayer *gradient = [CAGradientLayer layer];

    //设置开始和结束位置(通过开始和结束位置来控制渐变的方向)

    gradient.startPoint = CGPointMake(, );

    gradient.endPoint = CGPointMake(, 0.5);

    gradient.colors = colors;

    gradient.frame = CGRectMake(, , [UIScreen mainScreen].bounds.size.width, );

    [view.layer insertSublayer:gradient atIndex:];

    [self.view addSubview:view];