UICollectionView

UICollectionView跟安卓中的RecycleView很像，使用也很像，安卓通过adapter，ios通过UICollectionViewDelegate,UICollectionViewDataSource协议

具体使用方式：

1.新建ios工程

2.ViewController中实现相关协议

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController<UICollectionViewDelegate,UICollectionViewDataSource,UICollectionViewDelegateFlowLayout>

@end

3.实现ViewController

//
//  ViewController.m
//  uicollectionview
//
//  Created by Young on 15/10/9.
//  Copyright (c) 2015年 Young. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

static NSString* cid=@"cid";

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//采用流布局，若想实现其他功能，比如按下抬起效果等可以实现UICollectionViewDelegateFlowLayout中相关协议
UICollectionView* collec=[[UICollectionView alloc]initWithFrame:self.view.frame collectionViewLayout:[[UICollectionViewFlowLayout alloc]init]];

[collec registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:cid];

//设置自身为数据源
collec.dataSource=self;

collec.delegate=self;

[self.view addSubview:collec];

}

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{
return  CGSizeMake(120, 120);

}
//待显示的数量
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{

return 50;
}

// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:
//UICollectionView中每一个控件是一个UICollectionViewCell，可以通过继承UICollectionViewCell来自定义布局
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{

UICollectionViewCell* cell=[collectionView dequeueReusableCellWithReuseIdentifier:cid forIndexPath:indexPath];

cell.backgroundColor=[UIColor yellowColor];
return cell;

}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end

效果图