[转载]设置UITableVIew头部图片可拉伸放大的方法。

原文地址：http://blog.sina.com.cn/s/blog_8d1bc23f0102vu1q.html

 

 

//

//  PersonViewController.m

//  ChongDianZhuang

//

//  Created by 天吴iOS － 01 on 16/5/27.

//  Copyright © 2016年 天吴iOS － 01. All rights reserved.

//

 

#import "PersonViewController.h"

#define IMAGEHEIGHT 160

 

@interface PersonViewController () <UITableViewDelegate,UITableViewDataSource> {

    NSArray *_moreArray;

    UIImageView *_zoomImageView;

}

 

@end

 

@implementation PersonViewController

 

- (void)viewDidLoad {

    [super viewDidLoad];

    [self onInitView];

    self.view.backgroundColor = [UIColor cyanColor];

}

 

-(void)onInitView{

    UITableView *moreTableView = [[UITableView alloc]initWithFrame:self.view.bounds style:UITableViewStylePlain];

    moreTableView.delegate = self;

    moreTableView.dataSource = self;

    moreTableView.contentInset = UIEdgeInsetsMake(IMAGEHEIGHT, 0, 0, 0);

    [self.view addSubview:moreTableView];

    

    _zoomImageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, -IMAGEHEIGHT, self.view.frame.size.width, IMAGEHEIGHT)];

    _zoomImageView.image = [UIImage imageNamed:@"cover.jpg"];

    //_zoomImageView.backgroundColor = [UIColor yellowColor];

    _zoomImageView.contentMode = UIViewContentModeScaleAspectFill;

    _zoomImageView.clipsToBounds = YES;

    [moreTableView addSubview:_zoomImageView];

    

    if (!_moreArray) {

        _moreArray = [[NSArray alloc]initWithObjects:@"语言",@"体育",@"文艺",@"升学",@"职业",@"生活",@"爱好",@"1",@"2",@"3",@"4",@"5",@"6",@"7", nil];

    }

}

 

#pragma mark -TableView Delegate and Datasource

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

    return 1;

}

 

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

    return _moreArray.count;

}

 

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{

    return 60;

}

 

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    UITableViewCell *cell ;

    //static NSString *Identifier = @"Identifier";

    cell =[tableView dequeueReusableCellWithIdentifier:@""];

    if (cell==nil) {

        cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil];

        cell.textLabel.text = _moreArray[indexPath.row];

    }

    return cell;

}

 

-(void)scrollViewDidScroll:(UIScrollView *)scrollView{

    CGFloat y = scrollView.contentOffset.y; //如果有导航控制器，这里应该加上导航控制器的高度64

    if (y< -IMAGEHEIGHT) {

        CGRect frame = _zoomImageView.frame;

        frame.origin.y = y;

        frame.size.height = -y;

        _zoomImageView.frame = frame;

    }

    

}

 

 

 

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

 

/*

#pragma mark - Navigation

 

// In a storyboard-based application, you will often want to do a little preparation before navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    // Get the new view controller using [segue destinationViewController].

    // Pass the selected object to the new view controller.

}

*/

 

@end