#import "ViewController.h"
#import "CollectionViewCell.h"
static NSString *const CellReuseIdentify =@"CellReuseIdentify";
static NSString *const SupplementaryViewHeaderIdentify =@"SupplementaryViewHeaderIdentify";
static NSString *const SupplementaryViewFooterIdentify =@"SupplementaryViewFooterIdentify";
@interface ViewController ()<UICollectionViewDataSource,UICollectionViewDelegateFlowLayout>
@property (strong,nonatomic) UICollectionView *collectionView;
@end
@implementation ViewController
- (void)viewDidLoad {
[superviewDidLoad];
[selfsetupViews];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)setupViews{
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayoutalloc] init];
layout.minimumInteritemSpacing =10;
layout.minimumLineSpacing =10;
layout.itemSize =CGSizeMake((self.view.frame.size.width - 20)/3.0,100);
// layout.headerReferenceSize = CGSizeMake(100, 10);
// layout.footerReferenceSize = CGSizeMake(100, 20);
UICollectionView *collectionView = [[UICollectionViewalloc] initWithFrame:self.view.boundscollectionViewLayout:layout];
collectionView.backgroundColor = [UIColorwhiteColor];
//是否可以多选，默认为NO，在设置为YES时，会实现多张选择；
collectionView.allowsMultipleSelection =YES;
collectionView.dataSource =self;
collectionView.delegate =self;
[self.view addSubview:collectionView];
//注册
// [collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:CellReuseIdentify];
[collectionView registerNib:[UINib nibWithNibName:@"CollectionViewCell" bundle:[NSBundle mainBundle]] forCellWithReuseIdentifier:CellReuseIdentify];
//UICollectionElementKindSectionHeader注册是固定的
[collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:SupplementaryViewHeaderIdentify];
[collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:SupplementaryViewFooterIdentify];
}
#pragma mark - UICollectionViewDataSource method
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView{
return10;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return9;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
CollectionViewCell *cell = (CollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:CellReuseIdentify forIndexPath:indexPath];
cell.backgroundColor = [UIColor greenColor];
cell.textLabel.text = [NSString stringWithFormat:@"(%zd,%zd)", indexPath.section, indexPath.row];
return cell;
}
//头部与尾部
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath{
if([kind isEqualToString:UICollectionElementKindSectionHeader]){
UICollectionReusableView *supplementaryView = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:SupplementaryViewHeaderIdentify forIndexPath:indexPath];
supplementaryView.backgroundColor = [UIColor cyanColor];
UILabel *lable = [[UILabel alloc] initWithFrame:CGRectMake(0,0, 150,20)];
lable.text = @"2016年8月12";
[supplementaryView addSubview:lable];
// supplementaryView.backgroundColor = [UIColor orangeColor];
return supplementaryView;
}
else if([kind isEqualToString:UICollectionElementKindSectionFooter]) {
UICollectionReusableView *supplementaryView = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:SupplementaryViewFooterIdentify forIndexPath:indexPath];
supplementaryView.backgroundColor = [UIColor redColor];
return supplementaryView;
}
returnnil;
}
#pragma mark - UICollectionViewDelegate method
- (BOOL)collectionView:(UICollectionView *)collectionView shouldHighlightItemAtIndexPath:(NSIndexPath *)indexPath{
returnYES;
}
- (void)collectionView:(UICollectionView *)collectionView didHighlightItemAtIndexPath:(NSIndexPath *)indexPath{
UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
cell.contentView.backgroundColor = [UIColor blueColor];
}
- (void)collectionView:(UICollectionView *)collectionView didUnhighlightItemAtIndexPath:(NSIndexPath *)indexPath{
UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
cell.contentView.backgroundColor = [UIColor brownColor];
}
- (BOOL)collectionView:(UICollectionView *)collectionView shouldSelectItemAtIndexPath:(NSIndexPath *)indexPath{
returnYES;
}
//第一次点击调用
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
NSLog(@"您刚刚摸了我一下");
}
- (BOOL)collectionView:(UICollectionView *)collectionView shouldDeselectItemAtIndexPath:(NSIndexPath *)indexPath{
returnYES;
}
//在第一次点击的基础上调用
- (void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath{
NSLog(@"您刚刚轻轻抚摸了我一下");
UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
cell.contentView.backgroundColor = [UIColor redColor];
}
- (BOOL)collectionView:(UICollectionView *)collectionView shouldShowMenuForItemAtIndexPath:(NSIndexPath *)indexPath{
returnYES;
}
- (BOOL)collectionView:(UICollectionView *)collectionView canPerformAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender{
if ([NSStringFromSelector(action) isEqualToString:@"copy:"]
|| [NSStringFromSelector(action) isEqualToString:@"paste:"])
returnYES;
returnNO;
}
- (void)collectionView:(UICollectionView *)collectionView performAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(nullable id)sender
{
if([NSStringFromSelector(action) isEqualToString:@"copy:"])
{
NSLog(@"-------------执行拷贝-------------");
[_collectionView performBatchUpdates:^{
//可变字符串，实现添加删除功能
// [_section0Array removeObjectAtIndex:indexPath.row];
[_collectionView deleteItemsAtIndexPaths:@[indexPath]];
} completion:nil];
}
else if([NSStringFromSelector(action) isEqualToString:@"paste:"])
{
NSLog(@"-------------执行粘贴-------------");
[_collectionView performBatchUpdates:^{
[_collectionView insertItemsAtIndexPaths:@[indexPath]];
} completion:nil];
}
}
//
//- (void)collectionView:(UICollectionView *)collectionView performAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender{
// NSLog(@"复制之后，可以插入一个新的cell");
//}
#pragma mark - UICollectionViewDelegateFlowLayout method
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout referenceSizeForHeaderInSection:(NSInteger)section{
if(section ==1){
return CGSizeMake(100,50);
}
return CGSizeMake(100,20);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
