iOS-图片浏览器(字典和plist文件的使用)

//

//  ViewController.m

//  19-图片浏览器

//

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

//  Copyright © 2017年 李洪强. All rights reserved.

//

#define icon @"icon"

#define desc @"desc"

#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;

/**

一般的OC对象用strong修饰

*/

@property(nonatomic,strong)NSArray *images;

@end

@implementation ViewController

- (NSArray *)images{

if(_images == nil){

//字典的方式初始化

//        NSMutableDictionary *dic1 = [NSMutableDictionary dictionary];

//        dic1[icon] = @"biaoqingdi";

//        dic1[desc] = @"在他面前，其他神马表情都弱爆了！";

//        NSMutableDictionary *dict2 = [NSMutableDictionary dictionary];

//        dict2[icon]=  @"wangba" ;

//        dict2[desc] = @"哥们为什么选八号呢";

//        NSMutableDictionary *dict3 = [NSMutableDictionary dictionary];

//        dict3[icon]=  @"bingli" ;

//        dict3[desc] = @"这也忒狠了！";

//        NSMutableDictionary *dict4 = [NSMutableDictionary dictionary];

//        dict4[icon]=  @"chiniupa" ;

//        dict4[desc] = @"这小姑娘吃个牛排比杀牛还费劲啊";

//        NSMutableDictionary *dict5 = [NSMutableDictionary dictionary];

//        dict5[icon]=  @"danteng" ;

//        dict5[desc] = @"亲，你能改下你的网名么？哈哈";

//        _images = @[dic1,dict2,dict3,dict4,dict5];

//用plist的方式加载

//拿到plist文件的全路径

NSString *path = [[NSBundle mainBundle]pathForResource:@"images" ofType:@"plist"];

_images = [NSArray arrayWithContentsOfFile:path];

}

return _images;

}

- (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{

_noLabel.text = [NSString stringWithFormat:@"%d/%ld",_index + 1,_images.count];

NSDictionary *dict = _images[_index];

NSString *iconStr = dict[icon];

NSString *descStr = dict[desc];

_mainImageView.image = [UIImage imageNamed:iconStr];

_descLabel.text = descStr;

//判断按钮能不能点击

_previousBtn.enabled = (_index != 0);

_nextBtn.enabled = (_index != 4);

}

@end