产生渐变色的view

产生渐变色的view

效果

源码

https://github.com/YouXianMing/UI-Component-Collection

//

//  GradientColorView.h

//  GradientColorView

//

//  Created by YouXianMing on 15/12/15.

//  Copyright © 2015年 YouXianMing. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface GradientColorView : UIView

/**

 *  CGColor's array.

 */

@property (nonatomic, strong) NSArray   *colors;

/**

 *  CGColor's location.

 */

@property (nonatomic, strong) NSArray   *locations;

/**

 *  Start point.

 */

@property (nonatomic) CGPoint startPoint;

/**

 *  End point.

 */

@property (nonatomic) CGPoint endPoint;

/**

 *  After you have set all the properties, you should run this method to make effective.

 */

- (void)becomeEffective;

@end

//

//  GradientColorView.m

//  GradientColorView

//

//  Created by YouXianMing on 15/12/15.

//  Copyright © 2015年 YouXianMing. All rights reserved.

//

#import "GradientColorView.h"

@interface GradientColorView ()

@property (nonatomic, strong) CAGradientLayer  *gradientLayer;

@end

@implementation GradientColorView

+ (Class)layerClass {

    return [CAGradientLayer class];

}

- (instancetype)initWithFrame:(CGRect)frame {

    if (self = [super initWithFrame:frame]) {

        _gradientLayer  = (CAGradientLayer *)self.layer;

        self.startPoint = CGPointMake(, );

        self.endPoint   = CGPointMake(, );

        self.locations  = @[@(0.25), @(0.5), @(0.75)];

        self.colors     = @[(__bridge id)[UIColor redColor].CGColor,

                            (__bridge id)[UIColor greenColor].CGColor,

                            (__bridge id)[UIColor blueColor].CGColor];

    }

    return self;

}

- (void)becomeEffective {

    self.gradientLayer.startPoint = self.startPoint;

    self.gradientLayer.endPoint   = self.endPoint;

    self.gradientLayer.colors     = self.colors;

    self.gradientLayer.locations  = self.locations;

}

@end

细节