下拉tableView上面的图片放大

https://github.com/dbsGen/SlimeRefresh

1、引入头文件#import "SRRefreshView.h"

2、添加代理<UIScrollViewDelegate,SRRefreshDelegate>

3、实例化SRRefreshView

[objc] view plain copy

1. SRRefreshView *_slimeRefreshView=[[SRRefreshView alloc]init];  
2. _slimeRefreshView.delegate=self;  
3. _slimeRefreshView.upInset=44;  
4. _slimeRefreshView.slimeMissWhenGoingBack=YES;  
5. _slimeRefreshView.slime.bodyColor=[UIColor blackColor];  
6. _slimeRefreshView.slime.skinColor=[UIColor whiteColor];  
7. _slimeRefreshView.slime.lineWith=1;  
8. _slimeRefreshView.slime.shadowBlur=4;  
9. _slimeRefreshView.slime.shadowColor=[UIColor blackColor];  
10. [_tableView addSubview:_slimeRefreshView];  

4、写代理

[objc] view plain copy

1. #pragma mark-UIScrollViewDelegate  
2. - (void)scrollViewDidScroll:(UIScrollView *)scrollView  
3. {  
4.     CGFloat yOffset   = scrollView.contentOffset.y;  
5.       
6.     if (yOffset < 0) {  
7.         CGFloat ImageWidth = APP_WIDTH;  
8.         CGFloat factor = ((ABS(yOffset)+205)*ImageWidth)/205;  
9.         CGRect f = CGRectMake(-(factor-ImageWidth)/2, 0, factor, 205+ABS(yOffset));  
10.         _bgImgView.frame = f;  
11.         NSLog(@"下拉contentOffset.y小于0");  
12.     } else {  
13.         CGRect f = _bgImgView.frame;  
14.         f.origin.y = -yOffset;  
15.         _bgImgView.frame = f;  
16.         NSLog(@"上拉contentOffset.y大于0");  
17.     }  
18.   
19. }  
20. - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate  
21. {  
22.     [_slimeRefreshView scrollViewDidEndDraging];  
23. }  
24. #pragma mark - slimeRefresh delegate  
25.   
26. - (void)slimeRefreshStartRefresh:(SRRefreshView *)refreshView  
27. {  
28. //    [self requestBasePersonalInfo:YES];  
29. }  

注意事项：

[objc] view plain copy

1. UIImageView *_bgImgView=[LGImageView CreateLGImageView:CGRectMake(0,0,APP_WIDTH,205)  
2.                                 imageName:@"myBgImg"  
3.                        interactionEnabled:YES];  
4.   
5. [self.view addSubview:_bgImgView];  

[objc] view plain copy

1. UIView *_headerView=[LGView CreateLGView:CGRectMake(0,0,APP_WIDTH,205+USER_HEADER_IMAGEVIEW_SIZE/2)  
2.                                       WithBgColor:[UIColor clearColor]  
3.                                  withCornerRadius:0  
4.                                   withBorderWidth:0  
5.                                   withBorderColor:nil];  
6.     _tableView.tableHeaderView=_headerView;  
7.       
8.     {  
9.         UIView *tempView = [[UIView alloc] initWithFrame:CGRectMake(0, 205, APP_WIDTH, 40)];  
10.         tempView.backgroundColor = [UIColor whiteColor];  
11.         [_headerView addSubview:tempView];  
12.         CGRect frame = _headerView.frame;  
13.         frame.size.height = CGRectGetMaxY(tempView.frame);  
14.         _headerView.frame = frame;  
15.           
16.     }