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iOS 图片下拉变大

iOS 图片下拉变大

作者: _NSString | 来源:发表于2017-08-25 09:25 被阅读0次
    
    #import "ViewController.h"
    
    @interface ViewController ()<UITableViewDelegate,UITableViewDataSource>{
        UITableView * _TabView;
        NSArray * MessageArr;
        UITapGestureRecognizer * tapGest;
    }
    #define KHIGHT  200
    @end
    
    @implementation ViewController
    
    - (void)viewDidLoad {
        [super viewDidLoad];
        
        
        
        MessageArr =[NSArray arrayWithObjects:@"abc",@"abc",@"abc", nil];
        
        _TabView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStylePlain];
        _TabView.delegate = self;
        _TabView.dataSource = self;
        
        [self.view addSubview:_TabView];
        
        
        _TabView.contentInset = UIEdgeInsetsMake(KHIGHT, 0, 0, 0);
        UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, -KHIGHT, [UIScreen mainScreen].bounds.size.width, KHIGHT)];
        
        imageView.image = [UIImage imageNamed:@"3.jpg"];
        //图片设置为填充模式
        imageView.contentMode = UIViewContentModeScaleAspectFill;
        //剪切到边界
        imageView.clipsToBounds = YES;
        imageView.tag = 101;
        
        UIImageView * IMG = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"3.jpg"]];
        IMG.frame = CGRectMake(self.view.frame.size.width/2-30,-30, 60, 60);
        IMG.layer.cornerRadius = 30;
        IMG.layer.masksToBounds = YES;
        //给图片添加点击事件
        tapGest = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(PressImg)];
        //将图片与点击事件绑定
        [IMG addGestureRecognizer:tapGest];
        //允许图片被用户点击
        IMG.userInteractionEnabled=YES;
        
        [_TabView addSubview:imageView];
        [_TabView addSubview:IMG];
    }
    //设置tableview 的行数
    -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
        return MessageArr.count;
    }
    //设置
    -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
        
        static NSString * cellid = @"cellid";
        
        UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:cellid];
        if (!cell) {
            cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellid];
            cell.textLabel.text = [MessageArr objectAtIndex:indexPath.row];
        }
        //取消选中变灰
    //    cell.selectionStyle = UITableViewCellSelectionStyleNone;
        return cell;
    }
    
    - (void)scrollViewDidScroll:(UIScrollView *)scrollView
    {
        
        CGPoint point = scrollView.contentOffset;
        if (point.y < -KHIGHT) {
            CGRect rect = [_TabView viewWithTag:101].frame;
            rect.origin.y = point.y;
            rect.size.height = -point.y;
            [_TabView viewWithTag:101].frame = rect;
        }
    }
    -(void)PressImg{
        
        NSLog(@"点击了图片");
    }
    @end
    
    
    

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