UICollectionCell

最新推荐文章于 2020-07-18 19:18:41 发布

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最新推荐文章于 2020-07-18 19:18:41 发布

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原文链接：http://www.cnblogs.com/tony0571/p/5456715.html

本文详细介绍了UICollectionView的应用，包括布局设置、数据源与代理方法，以及如何实现个性化cell定制与标题栏展示。

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=================

UICollectionView的应用

=================

用于显示方块Cell

代理：<UICollectionViewDataSource,UICollectionViewDelegateFlowLayout>

//布局

UICollectionViewFlowLayout *flowLayout=[[UICollectionViewFlowLayout alloc]init];

//横向间距

flowLayout.minimumLineSpacing=30;

//竖向间距

flowLayout.minimumInteritemSpacing=20;

//滚动的方向 flowLayout.scrollDirection=UICollectionViewScrollDirectionVertical;

//创建UICollectionView

_collectionView=[[UICollectionView alloc]initWithFrame:CGRectMake(0, 64, KSCREENWIDTH, KSCREENHEIGHT-64-49) collectionViewLayout:flowLayout];

_collectionView.delegate=self;

_collectionView.dataSource=self;

_collectionView.backgroundColor=[UIColor whiteColor];

[self.view addSubview:_collectionView];

#pragma mark collectionView的代理

//返回每组有多少个对象

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{

return _dataArray.count;

}

//返回cell的大小

-(CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{

return CGSizeMake(60, 80);

}

//返回距离四周的边距，上，左，下，右

-(UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section{

return UIEdgeInsetsMake(30, 30, 30, 30);

}

//cell的定制

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{

static NSString *cellId=@"cell";

SetCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:cellId forIndexPath:indexPath];

SetModel *model=_dataArray[indexPath.row];

cell.itemName.text=model.name;

cell.itemImage.image=[UIImage imageNamed:model.imageUrl];

return cell;

}

// 标题栏

- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath {

UICollectionReusableView *reusableview = nil;

if (kind == UICollectionElementKindSectionHeader) {

if (indexPath.section == 0) {

JYGP3ReusableView *header = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"HeadView" forIndexPath:indexPath];

header.text = @"预设食谱";

reusableview = header;

UIButton *netCookBut = [UIButton buttonWithType:UIButtonTypeCustom];

[netCookBut setBackgroundImage:[UIImage imageNamed:@"ic_p3_btn_add"] forState:UIControlStateNormal];

[netCookBut setTitle:@"+网络食谱" forState:UIControlStateNormal];

[netCookBut setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

netCookBut.titleLabel.font = [UIFont systemFontOfSize:10];

netCookBut.frame = CGRectMake(ScreenWidth - 63 - 7, 17, 63, 20);

[netCookBut addTarget:self action:@selector(addNetCookbook) forControlEvents:UIControlEventTouchUpInside];

[header addSubview:netCookBut];

}

if (indexPath.section == 1) {

JYGP3ReusableView *header = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"headerID" forIndexPath:indexPath];

header.text = @"我的食谱";

reusableview = header;

}

return reusableview;

}

转载于:https://www.cnblogs.com/tony0571/p/5456715.html