[转]layer 颜色渐变

首先添加QuartzCore.framework

#import <QuartzCore/QuartzCore.h>


//颜色渐变
    CAGradientLayer *gradient = [CAGradientLayer layer];
    gradient.frame = self.view.bounds;
    gradient.colors = [NSArray arrayWithObjects:(id)[[UIColor colorWithRed:245.0/255.0 green:140.0/255.0 blue:70.0/255.0 alpha:1] CGColor], (id)[[UIColor colorWithRed:245.0/255.0 green:180.0/255.0 blue:90.0/255.0 alpha:1] CGColor], (id)[[UIColor colorWithRed:245.0/255.0 green:221.0/255.0 blue:110.0/255.0 alpha:1] CGColor], nil ];
    gradient.startPoint=CGPointMake(0, 0);
    gradient.endPoint=CGPointMake(1, 1);
    [self.view.layer insertSublayer:gradient atIndex:0];

转自：http://blog.csdn.net/lwq421336220/article/details/8179650