iOS开发之tableView点击下拉扩展与内嵌collectionView上传图片效果

4.collectionView布局和自定义item

#import <UIKit/UIKit.h>
@interface SectionHeaderViewCollectionReusableView : UICollectionReusableView
@property(nonatomic, strong)UILabel *titleLabel;
@end
#import "SectionHeaderViewCollectionReusableView.h"
@implementation SectionHeaderViewCollectionReusableView
-(instancetype)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self createViews];
}
return self;
}
-(void)createViews
{
_titleLabel = [[UILabel alloc]init];
[self addSubview:_titleLabel];
}
-(void)layoutSubviews
{
[super layoutSubviews];
_titleLabel.frame = CGRectMake(20, 30, 375, 50);
_titleLabel.font = [UIFont systemFontOfSize:20];
}
@end
collectionView的item
#import <UIKit/UIKit.h>
@interface MyCollectionViewCell : UICollectionViewCell
typedef enum : NSInteger
{
cellStyleDefault = 0,
cellStyleSelected = 1,
cellStyleAdd = 2,
}CollectionViewCellStyle;
@property(nonatomic, assign)CollectionViewCellStyle cellStyle;
@property(nonatomic, strong)UIImageView *photo;
@property(nonatomic, strong)UIImageView *imageView;
@property(nonatomic, strong)NSArray *array;
@property(nonatomic, strong)NSMutableArray *dataArray;
-(void)layoutSubviews;
@end
#import "MyCollectionViewCell.h"
@implementation MyCollectionViewCell
-(instancetype)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
_photo = [[UIImageView alloc]init];
_imageView = [[UIImageView alloc]init];
}
return self;
}
-(void)layoutSubviews
{
[super layoutSubviews];
[_photo setFrame:self.bounds];
_imageView.frame = self.bounds;
switch (_cellStyle) {
case cellStyleDefault:
self.layer.borderColor = [UIColor colorWithRed:0 green:0.68 blue:0.94 alpha:1].CGColor;
self.layer.masksToBounds = YES;
self.layer.borderWidth = 1.8;
//self.layer.cornerRadius = 20;
self.backgroundColor = [UIColor whiteColor];
[self.contentView addSubview:_photo];
break;
case cellStyleSelected:
self.layer.borderColor = [UIColor colorWithRed:0 green:0.68 blue:0.94 alpha:1].CGColor;
self.layer.masksToBounds = YES;
self.layer.borderWidth = 1.8;
//self.layer.cornerRadius = 20;
self.backgroundColor = [UIColor colorWithRed:0 green:0.68 blue:0.94 alpha:1];
[self.contentView addSubview:_photo];
break;
case cellStyleAdd:
[self.imageView setImage:[UIImage imageNamed:@"addPhoto.png"]];
self.backgroundColor = [UIColor whiteColor];
[self.contentView addSubview:_imageView];
break;
default:
break;
}
}
@end

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface AppModel : NSObject
@property (nonatomic, assign) BOOL Is_Open;
@end
#import "AppModel.h"
@implementation AppModel
@end
//设置model是为了设置一个bool类型的变量,用来记录tableview的cell是否展开,从而进行reloadSection操作,进行动画展开或收缩.