#import "ViewController.h"
#import "MyCollectionViewCell.h"
#import "HeaderCollectionReusableView.h"
#import "FooterCollectionReusableView.h"
#import "NewViewController.h"
@interface ViewController ()<UICollectionViewDataSource,UICollectionViewDelegate>{
NSDictionary *_dic;
}
//网格视图的对象
@property(nonatomic,strong)UICollectionView *myCollection;
@end
@implementation ViewController
//重写get方法
-(UICollectionView*)myCollection{
if (!_myCollection) {
//初始化布局对象
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc]init];
//设置每个模块的大小
layout.itemSize=CGSizeMake(100, 100);
//设置滚动方向
// layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
layout.scrollDirection = UICollectionViewScrollDirectionVertical;
//设置最小行间距
layout.minimumLineSpacing= 10;
//设置最小列间距
layout.minimumInteritemSpacing = 5;
//设置头视图的大小 自动适配 （如果是垂直滚动的话 宽自动是屏幕的宽，可以设置高度。反之如果是水平滚动的话 高自动是屏幕的高，可以设置宽度。）
layout.headerReferenceSize = CGSizeMake(100, 30);
//设置尾视图的大小
layout.footerReferenceSize = CGSizeMake(100, 30);
//设置每个模块中 上 左 下 右的间距（模块的边界和模块内容的距离）
layout.sectionInset=UIEdgeInsetsMake(10, 10, 10, 10);
// _myCollection = [[UICollectionView alloc]initWithFrame:[UIScreen mainScreen].bounds collectionViewLayout:layout];
_myCollection = [[UICollectionView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) collectionViewLayout:layout];
//设置代理
_myCollection.delegate = self;
_myCollection.dataSource = self;
//注册单元格
[_myCollection registerClass:[MyCollectionViewCell class] forCellWithReuseIdentifier:@"collectionCellId"];
//注册头视图单元格
[_myCollection registerClass:[HeaderCollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"header"];
//注册尾视图单元格
[_myCollection registerClass:[FooterCollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"footer"];
//设置背景颜色
_myCollection.backgroundColor = [UIColor lightGrayColor];
}
return _myCollection;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self.view addSubview:self.myCollection];
//模拟数据
// _dic =@{@"野兽":@[@"小滨",@"小李",@"小蒋",@"小泽"],
// @"帅哥":@[@"小雨",@"小惠",@"小建",@"小金",@"小尹",@"小石头"],
// @"美女":@[@"小白",@"小玉",@"小霜",@"小小白"],
// @"异类":@[@"小黑",@"陈硕",@"光头"]
// };
_dic = @{@"野兽":@[@{@"小滨":@"1.jpg"},@{@"小李":@"2.jpg"},@{@"小蒋":@"5.jpg"},@{@"小泽":@"3.jpg"}],
@"帅哥":@[@{@"小雨":@"1.jpg"},@{@"小惠":@"3.jpg"},@{@"小建":@"1.jpg"},@{@"小金":@"4.jpg"},@{@"小尹":@"6.jpg"},@{@"小石头":@"1.jpg"}],
@"美女":@[@{@"小白":@"3.jpg"},@{@"小玉":@"7.jpg"},@{@"小霜":@"4.jpg"},@{@"小小白":@"2.jpg"}],
@"异类":@[@{@"小黑":@"5.jpg"},@{@"陈硕":@"7.jpg"},@{@"光头":@"6.jpg"}]
};
}
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView*)collectionView{
return _dic.count;
}
- (NSInteger)collectionView:(UICollectionView*)collectionView numberOfItemsInSection:(NSInteger)section{
NSString*str =_dic.allKeys[section];
return [[_dic objectForKey:str] count];
}
// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:
- (UICollectionViewCell*)collectionView:(UICollectionView*)collectionView cellForItemAtIndexPath:(NSIndexPath*)indexPath{
static NSString *cellId =@"collectionCellId";
MyCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellId forIndexPath:indexPath];
NSString *str = _dic.allKeys[indexPath.section];
NSString *name = [[[_dic objectForKey:str]objectAtIndex:indexPath.row] allKeys][0];
cell.imageView.image = [UIImage imageNamed:[[_dic objectForKey:str] objectAtIndex:indexPath.row][name]];
cell.label.text=name;
cell.backgroundColor = [UIColor redColor];
returncell;
}
//设置头视图 和尾视图
-(UICollectionReusableView*)collectionView:(UICollectionView*)collectionView viewForSupplementaryElementOfKind:(NSString*)kind atIndexPath:(NSIndexPath*)indexPath{
if([kind isEqualToString:UICollectionElementKindSectionHeader]){
staticNSString*cellId =@"header";
HeaderCollectionReusableView *headerCell = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:cellId forIndexPath:indexPath];
headerCell.label.text= [NSStringstringWithFormat:@"第%ld组",indexPath.section+1];
headerCell.backgroundColor = [UIColor yellowColor];
returnheaderCell;
}else{
staticNSString*cellId =@"footer";
FooterCollectionReusableView*footerCell = [collectionViewdequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:cellId forIndexPath:indexPath];
footerCell.label.text=@"结尾";
footerCell.backgroundColor = [UIColor greenColor];
returnfooterCell;
}
}
-(void)collectionView:(UICollectionView*)collectionView didSelectItemAtIndexPath:(NSIndexPath*)indexPath{
NSLog(@"第%ld分区---第%ld行",indexPath.section,indexPath.row);
NewViewController *new = [[NewViewController alloc]init];
NSString *str = _dic.allKeys[indexPath.section];
NSString *name = [[[_dic objectForKey:str]objectAtIndex:indexPath.row] allKeys][0];
new.name= name;
new.img = [UIImage imageNamed:[[_dic objectForKey:str] objectAtIndex:indexPath.row][name]];
[self presentViewController:new animated:YES completion:nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
#import <UIKit/UIKit.h>
@interface NewViewController : UIViewController
@property(nonatomic,strong)UIImage *img;
@property(nonatomic,strong)NSString *name;
@end
#import "NewViewController.h"
@interface NewViewController ()
@property(nonatomic,strong)UIImageView *imageView;
@property(nonatomic,strong)UILabel *label;
@end
@implementationNewViewController
-(UIImageView*)imageView{
if (!_imageView) {
_imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height-50)];
}
return _imageView;
}
-(UILabel*)label{
if(!_label) {
_label = [[UILabel alloc]initWithFrame:CGRectMake(200, self.view.frame.size.height-40, 200, 30)];
}
return _label;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
[self.view addSubview:self.imageView];
[self.view addSubview:self.label];
self.imageView.image = self.img;
self.label.text = self.name;
}
-(void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event{
[self dismissViewControllerAnimated:YES completion:nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#import
@interfaceMyCollectionViewCell :UICollectionViewCell
@property(nonatomic,strong)UIImageView *imageView;
@property(nonatomic,strong)UILabel *label;
@end
#import "MyCollectionViewCell.h"
@implementationMyCollectionViewCell
-(UIImageView*)imageView{
if (!_imageView) {
_imageView = [[UIImageView alloc]initWithFrame:CGRectMake(20, 10, 60, 50)];
}
return _imageView;
}
-(UILabel*)label{
if(!_label) {
_label = [[UILabel alloc]initWithFrame:CGRectMake(30, 70, 80, 20)];
}
return _label;
}
-(instancetype)initWithFrame:(CGRect)frame{
if(self= [superinitWithFrame:frame]) {
[self addSubview:self.imageView];
[self addSubview:self.label];
}
return self;
}
@end
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