现在使用卡片效果的app很多，之前公司让实现一种卡片效果，就写了一篇关于实现卡片的文章。文章最后附有demo
实现上我选择了使用UICollectionView ；用UICollectionViewFlowLayout来定制样式；下面看看具体实现
效果
实现上我选择了使用UICollectionView ；用UICollectionViewFlowLayout来定制样式；下面看看具体实现
具体实现
1、ViViewController.m 代码实现
#import "ViewController.h"
#import "CollModel.h"
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
#define SCREEN_HEIGHT [UIScreen mainScreen].bounds.size.height
#define SCREEN_RATE ([UIScreen mainScreen].bounds.size.width/375.0)
#import "imageCell.h"
#import "LHHorizontalPageFlowlayout.h"
static NSString * const imageC = @"imageCell";
static NSString * const moreImageC = @"imageCell";
static const NSInteger kItemCountPerRow = 5; //每行显示5个
static const NSInteger kRowCount = 3; //每页显示行数
static float imageHeight = 80;//cell 高度
@interface ViewController ()<UICollectionViewDelegate,UICollectionViewDataSource>
@property (nonatomic, strong) UICollectionView * collectionView;
@property (nonatomic, strong) NSMutableArray * modelArray;
@property (nonatomic, strong) UICollectionView * moreCollectionView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
NSArray *appArray = [[self getDict] objectForKey:@"dictInfo"];
for (int i = 0; i < appArray.count; i++) {
NSDictionary * appDic = appArray[i];
CollModel * model = [[CollModel alloc]init];
model.title = [appDic objectForKey:@"title"];
model.url = [appDic objectForKey:@"url"];
[self.modelArray addObject:model];
}
[self createCollectionView];
[self createRightCollectionView];
}
- (NSDictionary *)getDict {
NSString * string = @"{"dictInfo":[{"title":"你好啊","url":"1.jpeg"},{"title":"你好啊","url":"2.jpeg"},{"title":"你好啊","url":"3.jpeg"},{"title":"你好啊","url":"4.jpeg"},{"title":"你好啊","url":"5.jpeg"},{"title":"你好啊","url":"6.jpeg"},{"title":"是很好","url":"7.jpeg"},{"title":"你好啊","url":"1.jpeg"},{"title":"你好啊","url":"2.jpeg"},{"title":"你好啊","url":"3.jpeg"},{"title":"你好啊","url":"4.jpeg"},{"title":"你好啊","url":"5.jpeg"},{"title":"你好啊","url":"6.jpeg"},{"title":"是很好","url":"7.jpeg"},{"title":"你好啊","url":"1.jpeg"},{"title":"你好啊","url":"2.jpeg"},{"title":"你好啊","url":"3.jpeg"},{"title":"你好啊","url":"4.jpeg"},{"title":"你好啊","url":"5.jpeg"},{"title":"你好啊","url":"6.jpeg"},{"title":"是很好","url":"7.jpeg"}]}";
NSDictionary *infoDic = [self dictionaryWithJsonString:string];
return infoDic;
}
-(NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString {
if (jsonString == nil) {
return nil;
}
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSError *err;
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&err];
if(err)
{
NSLog(@"json解析失败：%@",err);
return nil;
}
return dic;
}
- (NSMutableArray *)modelArray {
if (!_modelArray) {
_modelArray = [NSMutableArray array];
}
return _modelArray;
}
- (void)createCollectionView{
UICollectionViewFlowLayout * layout = [[UICollectionViewFlowLayout alloc]init];
layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
layout.minimumLineSpacing = 0;
layout.minimumInteritemSpacing = 0;
_collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 100, [UIScreen mainScreen].bounds.size.width, imageHeight * SCREEN_RATE) collectionViewLayout:layout];
_collectionView.tag = 11;
_collectionView.backgroundColor = [UIColor colorWithRed:186 / 255.0 green:186 / 255.0 blue:186 / 255.0 alpha:0.9];
_collectionView.dataSource = self;
_collectionView.delegate = self;
_collectionView.bounces = NO;
_collectionView.alwaysBounceHorizontal = YES;
_collectionView.alwaysBounceVertical = NO;
_collectionView.showsHorizontalScrollIndicator = NO;
_collectionView.showsVerticalScrollIndicator = NO;
[self.view addSubview:_collectionView];
[_collectionView registerClass:[imageCell class] forCellWithReuseIdentifier:imageC];
}
- (void)createRightCollectionView{
LHHorizontalPageFlowlayout * layout = [[LHHorizontalPageFlowlayout alloc] initWithRowCount:kRowCount itemCountPerRow:kItemCountPerRow];
[layout setColumnSpacing:0 rowSpacing:0 edgeInsets:UIEdgeInsetsMake(0, 0, 0, 0)];
layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
// UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc]init];
// layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
layout.minimumLineSpacing = 0;
layout.minimumInteritemSpacing = 0;
_moreCollectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 300, [UIScreen mainScreen].bounds.size.width, imageHeight * SCREEN_RATE * kRowCount) collectionViewLayout:layout];
_moreCollectionView.backgroundColor = [UIColor clearColor];
_moreCollectionView.tag = 22;
_moreCollectionView.dataSource = self;
_moreCollectionView.delegate = self;
_moreCollectionView.bounces = NO;
_moreCollectionView.alwaysBounceHorizontal = YES;
_moreCollectionView.alwaysBounceVertical = NO;
_moreCollectionView.backgroundColor = [UIColor colorWithRed:186 / 255.0 green:186 / 255.0 blue:186 / 255.0 alpha:0.9];
_moreCollectionView.showsHorizontalScrollIndicator = NO;
_moreCollectionView.showsVerticalScrollIndicator = NO;
[self.view addSubview:_moreCollectionView];
[_moreCollectionView registerClass:[imageCell class] forCellWithReuseIdentifier:moreImageC];
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return self.modelArray.count;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
CollModel * model = self.modelArray[indexPath.row];
imageCell * cell = [collectionView dequeueReusableCellWithReuseIdentifier:imageC forIndexPath:indexPath];
cell.itemModel = model;
return cell;
}
// 返回每个item的大小
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
CGFloat CWidth = imageHeight * SCREEN_RATE;
CGFloat CHeight = imageHeight * SCREEN_RATE;
return CGSizeMake(CWidth, CHeight);
}
#pragma mark - UICollectionViewDelegate点击事件
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
CollModel * model = self.modelArray[indexPath.row];
NSLog(@"self.appModelArray----%@",model.title);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
