//

//  ViewController.m

//  ImageStrenchDemo

//

//  Created by 思 彭 on 17/3/14.

//  Copyright © 2017年 思 彭. All rights reserved.

//

#import "ViewController.h"

// rgb颜色转换（16进制->10进制）

#define UIColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    UIImageView *headImgViewBg = [[UIImageView alloc] initWithFrame:self.view.bounds];

    [headImgViewBg setImage:[UIImage imageNamed:@"bj"]];

    [self.view addSubview:headImgViewBg];

    [self setupUI];

    [self setupImage];

}

// 图片实现渐变

- (void)setupImage {

    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

    button.frame = CGRectMake(, , , );

    UIImage *image1 = [UIImage imageNamed:@""];

    UIImage *resizeImage = [image1 resizableImageWithCapInsets:UIEdgeInsetsMake(image1.size.height*0.5, image1.size.width*0.3, image1.size.height*0.5, image1.size.width*0.5)resizingMode:UIImageResizingModeStretch];

    [button setBackgroundImage:resizeImage forState:UIControlStateNormal ];

    [button setTitle:@"dcevbvhvjrvrjvn" forState:UIControlStateNormal];

    [button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

    [self.view addSubview:button];

}

// 颜色值实现渐变

- (void)setupUI {

    UIView *bgView = [[UIView alloc]initWithFrame:CGRectMake(, , , )];

    UIImageView *headImgViewBg = [[UIImageView alloc] initWithFrame:CGRectMake(, , , )];

    bgView.layer.masksToBounds = YES;

    bgView.layer.cornerRadius = ;

    [bgView addSubview:headImgViewBg];

    [self.view addSubview:bgView];

    CAGradientLayer *gradient = [CAGradientLayer layer];

    gradient.frame = headImgViewBg.frame;

    gradient.colors = [NSArray arrayWithObjects:(id)UIColorFromRGB(0x752ccd).CGColor,

                       (id)UIColorFromRGB(0xcd1f87).CGColor,nil];

    gradient.startPoint = CGPointMake(, 0.5);

    gradient.endPoint = CGPointMake(, 0.5);

    [headImgViewBg.layer insertSublayer:gradient atIndex:];

}

@end