//

//  ViewController.m

//  19-图片浏览器

//

//  Created by hongqiangli on 2017/7/31.

//  Copyright ? 2017年 信和惠民投资管理（北京）有限公司. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

/**

 记录当前的索引号

 */

@property(nonatomic,assign)int index;

/**

 上一张

 */

- (IBAction)previous;

/**

 下一张

 */

- (IBAction)next;

/**

 描述

 */

@property (weak, nonatomic) IBOutlet UILabel *descLabel;

/**

 上一个按钮

 */

@property (weak, nonatomic) IBOutlet UIButton *previousBtn;

/**

 下一个按钮

 */

@property (weak, nonatomic) IBOutlet UIButton *nextBtn;

/**

 索引label

 */

@property (weak, nonatomic) IBOutlet UILabel *noLabel;

@property (weak, nonatomic) IBOutlet UIImageView *mainImageView;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [self changData];

}

/**

 点击上一张

 */

- (IBAction)previous {

    _index--;

    [self changData];

}

/**

 下一张

 */

- (IBAction)next {

    _index++;

    [self changData];

}

- (void)changData{

    switch (_index) {

        case 0:

            _noLabel.text = @"1/5";

            _mainImageView.image = [UIImage imageNamed:@"biaoqingdi"];

            _descLabel.text = @"在他前面,其他什么表情都弱爆了!";

            break;

        case 1:

            _noLabel.text = @"2/5";

            _mainImageView.image = [UIImage imageNamed:@"wangba"];

            _descLabel.text = @"哥们为什么选择八号呢";

            break;

        case 2:

            _noLabel.text = @"3/5";

            _mainImageView.image = [UIImage imageNamed:@"bingli"];

            _descLabel.text = @"这也忒狠了";

            break;

        case 3:

            _noLabel.text = @"4/5";

            _mainImageView.image = [UIImage imageNamed:@"chiniupa"];

            _descLabel.text = @"这个小姑娘吃个牛排比杀牛还费劲呢";

            break;

        case 4:

            _noLabel.text = @"5/5";

            _mainImageView.image = [UIImage imageNamed:@"danteng"];

            _descLabel.text = @"亲，你能改下你的网名么？哈哈";

            break;

        default:

            break;

    }

    //判断按钮能不能点击

    _previousBtn.enabled = (_index != 0);

    _nextBtn.enabled = (_index != 4);

}

@end

iOS开发-图片浏览器(优化)