iOS.UIKit.12.UICollectionView

一、案例介绍：以集合形式展现图片，如图01

图01

二、案例步骤：

1、选择Simple View Aplication,取名cq.38.集合视图，如图02

图02

2、Main.storyboard,如图03

图03

3、events.plist，如图04，05

4、CQ38ViewController.h

#import <UIKit/UIKit.h>

@interface CQ38ViewController : UICollectionViewController
@property (strong,nonatomic) NSArray *events;
@end

5、CQ38ViewController.m

#import "CQ38ViewController.h"

#import "CQ38CollectionViewCell.h"

@interface CQ38ViewController ()
@end
@implementation CQ38ViewController
- (void)viewDidLoad

{

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.
NSBundle *bundle = [NSBundle mainBundle];

    NSString *plistPath = [bundle pathForResource:@"events"

                                           ofType:@"plist"];

    //获取属性列表文件中的全部数据

    NSArray *array = [[NSArray alloc] initWithContentsOfFile:plistPath];

    self.events = array;
}
- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);

}
#pragma mark - UICollectionViewDataSource
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView

{

    return [self.events count] / 2;

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

{

    return 2;

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

{

    CQ38CollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];

    NSDictionary *event = [self.events objectAtIndex:(indexPath.section*2 + indexPath.row)];

    cell.label.text = [event objectForKey:@"name"];

    cell.imageView.image = [UIImage imageNamed:[event objectForKey:@"image"]];

    return cell;

}
#pragma mark - UICollectionViewDelegate

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath

{

    NSDictionary *event = [self.events objectAtIndex:(indexPath.section*2 + indexPath.row)];

    NSLog(@"select event name : %@", [event objectForKey:@"name"]);
}

@end

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