图片浏览器

• 首先：storyboard里面有这么些个控件：

  • 可以拖控件，也可以代码实现
    

  • 然后我们准备了一个plist文件

我们在ViewController.m中写了如下的代码

#import "ViewController.h"

@interface ViewController ()
- (IBAction)left;
- (IBAction)right;
//页码
@property (weak, nonatomic) IBOutlet UILabel *page;
//右按钮
@property (weak, nonatomic) IBOutlet UIButton *rightBtn;
//描述
@property (weak, nonatomic) IBOutlet UILabel *desc;
//左按钮
@property (weak, nonatomic) IBOutlet UIButton *leftBtn;
//显示图片
@property (weak, nonatomic) IBOutlet UIImageView *imageView;
//当前页
@property (nonatomic,assign) int index;
//数组
@property (nonatomic,strong) NSArray *images;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    //获取plist全路径
    NSBundle *bundle = [NSBundle mainBundle];
    NSString *path = [bundle pathForResource:@"imagesData.plist" ofType:nil];
    //添加到数组
    self.images = [NSArray arrayWithContentsOfFile:path];

    self.index --;
    [self right];
}
- (IBAction)left
{
    self.index --;
    [self showImage];

}

- (IBAction)right
{

    self.index ++;
    [self showImage];

}
- (void)showImage
{
    //取出plist文件的字典
    NSDictionary *dict =  self.images[self.index];
    NSString *name = dict[@"icon"];
    //取出图片
    self.imageView.image = [UIImage imageNamed:name];
    //页码
    self.page.text = [NSString stringWithFormat:@"%d/ %ld",self.index+1,self.images.count];
    //描述
    self.desc.text = dict[@"desc"];
    //控制点击按钮
    self.leftBtn.enabled = (self.index !=0);
    self.rightBtn.enabled = (self.index !=4);


}
@end

效果如下：