iOS开发-图片浏览器(优化)
//
// ViewController.m
// 19-图片浏览器
//
// Created by hongqiangli on 2017/7/31.
// Copyright © 2017年 李洪强. 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
