ios开发-UIImageView的使用，点击图片刷新对应数据的过程

一个通过点击图片进行刷新的过程

1，图片类

#import <Foundation/Foundation.h>

@interface MYYImageInfo : NSObject
@property(nonatomic,strong)UIImage *image;
@property(nonatomic,strong)NSString *title;
@property(nonatomic,strong)NSString *summary;
@end

@implementation MYYImageInfo
-(void)dealloc{
    self.image = nil;
    self.title = nil;
    self.summary = nil;
}
@end

2 图片管理类

#import <Foundation/Foundation.h>
#import "MYYImageInfo.h"
@interface MYYImageInfoManager : NSObject
//希望到得imageinfo对象
+(MYYImageInfo *)imageInfoWithDictionary:(NSDictionary *)dic;
@end

#import "MYYImageInfoManager.h"

@implementation MYYImageInfoManager
+(MYYImageInfo *)imageInfoWithDictionary:(NSDictionary *)dic{
         MYYImageInfo *info = [[MYYImageInfo alloc] init];
         [info setValuesForKeysWithDictionary:dic];
       return info;
}

@end

3.，自定义图片视图类

#import <UIKit/UIKit.h>
#import "MYYImageInfo.h"
@interface MYYImageInfoView : UIView
//添加两个属性
@property(nonatomic,strong)id target;
@property(nonatomic,assign)SEL action;



//根据基本对象刷新显示内容
-(void)refreshWithImageInfo:(MYYImageInfo *)info;
@end

#import "MYYImageInfoView.h"

@implementation MYYImageInfoView{
    //图片
    UIImageView *imageView;
    //图片标题
    UILabel *titleLabel;
    //图片简介
    UILabel *summaryLabel;
}

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        //添加图片视图
        imageView = [[UIImageView alloc] initWithFrame:self.bounds];
        //图片填充
        imageView.contentMode = UIViewContentModeScaleAspectFit;
        //titlelabel
        titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 300, 320, 30)];
        //简介视图
        summaryLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 335, 320, CGRectGetHeight(frame) - 335)];
        //设置标题效果
        titleLabel.font = [UIFont boldSystemFontOfSize:30];
        titleLabel.textColor =[UIColor whiteColor];
        //设置标签为透明色（在ios6.0中加下面这句话,在ios7.0中不需要）
        titleLabel.backgroundColor = [UIColor clearColor];
       
        //设置简介效果
        summaryLabel.font = [UIFont boldSystemFontOfSize:20];
        summaryLabel.textColor = [UIColor whiteColor];
        summaryLabel.backgroundColor = [UIColor clearColor];
        summaryLabel.numberOfLines = 0;
       
        //本身就是一个视图
        [self addSubview:imageView];
        [self addSubview:titleLabel];
        [self addSubview:summaryLabel];
       
       
        //修改视图的底色
        self.backgroundColor = [UIColor blackColor];
    }
    return self;
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
    // Drawing code
}
*/

-(void)refreshWithImageInfo:(MYYImageInfo *)info{
    imageView.image = info.image;
    titleLabel.text = info.title;
    summaryLabel.text = info.summary;
}

//重写点击事件触发的方法
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
   
    if ([self.target respondsToSelector:self.action]) {
        [self.target performSelector:self.action withObject:self];
    }
   
}
@end

4.第一视图控制器

#import "MYYFirstViewController.h"
#import "MYYImageInfoView.h"
#import "MYYImageInfoManager.h"
@interface MYYFirstViewController ()
@property(nonatomic,strong)NSMutableArray *imageInfoList;
@end

@implementation MYYFirstViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
   
         NSDictionary *dic1 = @{@"title":@"你好1",@"summary":@"你好简介1",@"image":[UIImage imageNamed:@"1"]};
         NSDictionary *dic2 = @{@"title":@"你好2",@"summary":@"你好简介2",@"image":[UIImage imageNamed:@"2"]};
         NSDictionary *dic3 = @{@"title":@"你好3",@"summary":@"你好简介3",@"image":[UIImage imageNamed:@"3"]};
         NSDictionary *dic4 = @{@"title":@"你好4",@"summary":@"你好简介4",@"image":[UIImage imageNamed:@"4"]};
   
    //创建数组对象
      self.imageInfoList = [[NSMutableArray alloc] init ];
     [self.imageInfoList addObject:[MYYImageInfoManager imageInfoWithDictionary:dic1]];
     [self.imageInfoList addObject:[MYYImageInfoManager imageInfoWithDictionary:dic2]];
     [self.imageInfoList addObject:[MYYImageInfoManager imageInfoWithDictionary:dic3]];
     [self.imageInfoList addObject:[MYYImageInfoManager imageInfoWithDictionary:dic4]];
   

      //将图片视图添加到视图上去
        MYYImageInfoView *infoView =  [[MYYImageInfoView alloc]initWithFrame:self.view.bounds];
        [self.view addSubview:infoView];
   
        [infoView refreshWithImageInfo:self.imageInfoList[0]];
   
   
          //target 和action的方法实现
         infoView.target = self;
         infoView.action = @selector(changeImageInfo:);
   

}
-(void)changeImageInfo:(MYYImageInfoView *)sender{
    NSInteger index = arc4random()% 4;
    [sender refreshWithImageInfo:self.imageInfoList[index]];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

效果图如下

点击刷新