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UICollectionView를 프로그래밍 방식으로 작성하다
코드만 사용하여 간단한 UICollection View를 설정하는 방법을 보여 줄 가이드 또는 튜토리얼을 찾고 있습니다.
Apples 사이트의 문서를 검토하고 있으며, 레퍼런스 매뉴얼도 사용하고 있습니다.
하지만 Storyboards나 XIB/NIB 파일을 사용하지 않고 UICollectionView를 설정하는 방법을 보여 주는 간단한 가이드가 있으면 정말 좋을 것 같습니다만, 안타깝게도 검색해 보면 Storyboard 기능을 갖춘 튜토리얼밖에 없습니다.
헤더 파일:--
@interface ViewController : UIViewController<UICollectionViewDataSource,UICollectionViewDelegateFlowLayout>
{
UICollectionView *_collectionView;
}
구현 파일:--
- (void)viewDidLoad
{
[super viewDidLoad];
self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
UICollectionViewFlowLayout *layout=[[UICollectionViewFlowLayout alloc] init];
_collectionView=[[UICollectionView alloc] initWithFrame:self.view.frame collectionViewLayout:layout];
[_collectionView setDataSource:self];
[_collectionView setDelegate:self];
[_collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"cellIdentifier"];
[_collectionView setBackgroundColor:[UIColor redColor]];
[self.view addSubview:_collectionView];
// Do any additional setup after loading the view, typically from a nib.
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return 15;
}
// The cell that is returned must be retrieved from a call to -dequeueReusableCellWithReuseIdentifier:forIndexPath:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:@"cellIdentifier" forIndexPath:indexPath];
cell.backgroundColor=[UIColor greenColor];
return cell;
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
return CGSizeMake(50, 50);
}
출력---
swift4 사용자:--
class TwoViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout, UICollectionViewDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.collectionView = UICollectionView(frame: self.view.bounds, collectionViewLayout: flowLayout)
collectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "collectionCell")
collectionView.delegate = self
collectionView.dataSource = self
collectionView.backgroundColor = UIColor.cyan
self.view.addSubview(collectionView)
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 20
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
var cell = collectionView.dequeueReusableCell(withReuseIdentifier: "collectionCell", for: indexPath as IndexPath)
cell.backgroundColor = UIColor.green
return cell
}
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
return CGSize(width: 50, height: 50)
}
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAtIndex section: Int) -> UIEdgeInsets {
return UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5)
}
}
Swift 2.0의 경우
필요한 방법을 구현하지 않고CollectionViewCells:
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize
{
return CGSizeMake(50, 50);
}
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAtIndex section: Int) -> UIEdgeInsets
{
return UIEdgeInsetsMake(5, 5, 5, 5); //top,left,bottom,right
}
사용하다UICollectionViewFlowLayout
func createCollectionView() {
let flowLayout = UICollectionViewFlowLayout()
// Now setup the flowLayout required for drawing the cells
let space = 5.0 as CGFloat
// Set view cell size
flowLayout.itemSize = CGSizeMake(50, 50)
// Set left and right margins
flowLayout.minimumInteritemSpacing = space
// Set top and bottom margins
flowLayout.minimumLineSpacing = space
// Finally create the CollectionView
let collectionView = UICollectionView(frame: CGRectMake(10, 10, 300, 400), collectionViewLayout: flowLayout)
// Then setup delegates, background color etc.
collectionView?.dataSource = self
collectionView?.delegate = self
collectionView?.registerClass(UICollectionViewCell.self, forCellWithReuseIdentifier: "cellID")
collectionView?.backgroundColor = UIColor.whiteColor()
self.view.addSubview(collectionView!)
}
그 후,UICollectionViewDataSource필요에 따라서, 다음의 방법을 사용합니다.
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 20;
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
var cell:UICollectionViewCell=collectionView.dequeueReusableCellWithReuseIdentifier("collectionCell", forIndexPath: indexPath) as UICollectionViewCell;
cell.backgroundColor = UIColor.greenColor();
return cell;
}
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
스위프트 3
class TwoViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout, UICollectionViewDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let flowLayout = UICollectionViewFlowLayout()
let collectionView = UICollectionView(frame: self.view.bounds, collectionViewLayout: flowLayout)
collectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "collectionCell")
collectionView.delegate = self
collectionView.dataSource = self
collectionView.backgroundColor = UIColor.cyan
self.view.addSubview(collectionView)
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
{
return 20
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell
{
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "collectionCell", for: indexPath as IndexPath)
cell.backgroundColor = UIColor.green
return cell
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
{
return CGSize(width: 50, height: 50)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets
{
return UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5)
}
}
사용자 지정 셀은 uicolection 뷰에서 처리할 수 있습니다. 아래 
코드를 참조하십시오.
- (void)viewDidLoad
{
UINib *nib2 = [UINib nibWithNibName:@"YourCustomCell" bundle:nil];
[CollectionVW registerNib:nib2 forCellWithReuseIdentifier:@"YourCustomCell"];
UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
[flowLayout setItemSize:CGSizeMake(200, 230)];
flowLayout.minimumInteritemSpacing = 0;
[flowLayout setScrollDirection:UICollectionViewScrollDirectionVertical];
[CollectionVW setCollectionViewLayout:flowLayout];
[CollectionVW reloadData];
}
#pragma mark - COLLECTIONVIEW
#pragma mark Collection View CODE
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return Array.count;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = @"YourCustomCell";
YourCustomCell *cell = (YourCustomCell *)[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
cell.MainIMG.image=[UIImage imageNamed:[Array objectAtIndex:indexPath.row]];
return cell;
}
-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
}
#pragma mark Collection view layout things
// Layout: Set cell size
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
CGSize mElementSize;
mElementSize=CGSizeMake(kScreenWidth/3.4, 150);
return mElementSize;
}
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section
{
return 5.0;
}
// Layout: Set Edges
- (UIEdgeInsets)collectionView: (UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
{
if (isIphone5 || isiPhone4)
{
return UIEdgeInsetsMake(15,15,5,15); // top, left, bottom, right
}
else if (isIphone6)
{
return UIEdgeInsetsMake(15,15,5,15); // top, left, bottom, right
}
else if (isIphone6P)
{
return UIEdgeInsetsMake(15,15,5,15); // top, left, bottom, right
}
return UIEdgeInsetsMake(15,15,5,15); // top, left, bottom, right
}
@Warewolf의 답변을 바탕으로 다음 단계는 사용자 지정 셀을 만드는 것입니다.
에 가다
File -> New -> File -> User Interface -> Empty -> Call이 팁"customNib".고객님의 고객명
customNib을 질질 끌다UICollectionView감방하다.재사용 셀 식별자 제공@"Cell".File -> New -> File -> Cocoa Touch Class -> Class이름 지어진"CustomCollectionViewCell"을 서브클래스로 하다UICollectionViewCell.커스텀 니브로 돌아가서 셀을 클릭하여 이 커스텀클래스를 만듭니다.
"CustomCollectionViewCell".으로 이동합니다.
viewDidLoadviewcontroller대신[_collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"cellIdentifier"];갖고 있다
UINib *nib = [UINib nibWithNibName:@"customNib" bundle:nil]; [_collectionView registerNib:nib forCellWithReuseIdentifier:@"Cell"];또한 (새로운 셀 ID로) 변경합니다.
UICollectionViewCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];
Apple 문서:
- (id)initWithFrame:(CGRect)frame
collectionViewLayout:(UICollectionViewLayout *)layoutParameters
컬렉션 뷰 개체를 프로그래밍 방식으로 초기화할 때 이 방법을 사용합니다.레이아웃 파라미터에 0을 지정하는 경우 collection 뷰를 화면에 표시하기 전에 collectionViewLayout 속성에 레이아웃 개체를 할당해야 합니다.그렇지 않으면 컬렉션 보기가 화면에 항목을 표시할 수 없습니다.
이 메서드는 지정된 이니셜라이저입니다.
이 메서드는 다음 명령어를 초기화하기 위해 사용됩니다.UICollectionView여기에서는 프레임과UICollectionViewLayout물건.
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc]init];
마지막에 추가UICollectionView로서subview당신의 견해에 따라.
이제 컬렉션 보기가 문법적으로 추가됩니다.당신은 계속 배울 수 있어요.
행복한 배움!!도움이 되길 바랍니다.
스위프트 5
XCode 11.5
import UIKit
// 1. When creating this view, instanciate this class with the param "collectionViewLayout: UICollectionViewFlowLayout".
class BespokeCollectionViewController: UICollectionViewController, UICollectionViewDelegateFlowLayout {
var cellId = "AwesomeCell"
override func viewDidLoad() {
super.viewDidLoad()
// 2. Register a reusable cell:
collectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: cellId)
}
// 3. Return number of items:
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 5
}
// 4. Define the reusable cell:
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath)
// You can cast type above as such: ...for: indexPath) as! BespokeCell
return cell
}
// 5. Define the size of the cell. This depends on protocol 'UICollectionViewDelegateFlowLayout' to work:
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let width = view.frame.width // In this example the width is the same as the whole view.
let height = CGFloat(200)
return CGSize(width: width, height: height)
}
}
맞춤형 수업을 이용하려면collectionViewLayout파라미터:
let layout = UICollectionViewFlowLayout()
let myViewController = WorkoutViewController(collectionViewLayout: layout)
스토리보드를 사용하지 않는 경우 이 보기를 창에 연결해야 합니다.그건 다른 문제야.iOS 12까지의 시스템은 AppDelegate 파일의 창 로직을 처리합니다.iOS 13 이상에서는 이 로직은 SceneDelegate 파일에서 처리됩니다.
window?.rootViewController = someController
행운을 빕니다.
#pragma mark -
#pragma mark - UICollectionView Datasource and Delegates
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return 1;
}
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return Arr_AllCulturalButtler.count;
}
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *coll=@"FromCulturalbutlerCollectionViewCell";
FromCulturalbutlerCollectionViewCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:coll forIndexPath:indexPath];
cell.lbl_categoryname.text=[[Arr_AllCulturalButtler objectAtIndex:indexPath.row] Category_name];
cell.lbl_date.text=[[Arr_AllCulturalButtler objectAtIndex:indexPath.row] event_Start_date];
cell.lbl_location.text=[[Arr_AllCulturalButtler objectAtIndex:indexPath.row] Location_name];
[cell.Img_Event setImageWithURL:[APPDELEGATE getURLForMediumSizeImage:[(EventObj *)[Arr_AllCulturalButtler objectAtIndex:indexPath.row] Event_image_name]] placeholderImage:nil usingActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
cell.button_Bookmark.selected=[[Arr_AllCulturalButtler objectAtIndex:indexPath.row] Event_is_bookmarked];
[cell.button_Bookmark addTarget:self action:@selector(btn_bookmarkClicked:) forControlEvents:UIControlEventTouchUpInside];
cell.button_Bookmark.tag=indexPath.row;
return cell;
}
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
[self performSegueWithIdentifier:SEGUE_CULTURALBUTLER_KULTURELLIS_DETAIL sender:self];
}
// stroy board navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:@"Overview_Register"])
{
WDRegisterViewController *obj=(WDRegisterViewController *)[segue destinationViewController];
obj.str_Title=@"Edit Profile";
obj.isRegister=NO;
}
}
[self performSegueWithIdentifier:@"Overview_Measure" sender:nil];
UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
WDPeekViewController *Peek = (WDPeekViewController *)[sb instantiateViewControllerWithIdentifier:@"WDPeekViewController"];
[self.navigationController pushViewController:tabBarController animated:YES];
굴절도 검사
#import "CollectionViewController.h"
#import "BuyViewController.h"
#import "CollectionViewCell.h"
@interface CollectionViewController ()
{
NSArray *mobiles;
NSArray *costumes;
NSArray *shoes;
NSInteger selectpath;
NSArray *mobilerate;
NSArray *costumerate;
NSArray *shoerate;
}
@end
@implementation CollectionViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = self.receivename;
mobiles = [[NSArray alloc]initWithObjects:@"7.jpg",@"6.jpg",@"5.jpg", nil];
costumes = [[NSArray alloc]initWithObjects:@"shirt.jpg",@"costume2.jpg",@"costume1.jpg", nil];
shoes = [[NSArray alloc]initWithObjects:@"shoe.jpg",@"shoe1.jpg",@"shoe2.jpg", nil];
mobilerate = [[NSArray alloc]initWithObjects:@"10000",@"11000",@"13000",nil];
costumerate = [[NSArray alloc]initWithObjects:@"699",@"999",@"899", nil];
shoerate = [[NSArray alloc]initWithObjects:@"599",@"499",@"300", nil];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return 1;
}
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return 3;
}
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellId = @"cell";
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellId forIndexPath:indexPath];
UIImageView *collectionImg = (UIImageView *)[cell viewWithTag:100];
if ([self.receivename isEqualToString:@"Mobiles"])
{
collectionImg.image = [UIImage imageNamed:[mobiles objectAtIndex:indexPath.row]];
}
else if ([self.receivename isEqualToString:@"Costumes"])
{
collectionImg.image = [UIImage imageNamed:[costumes objectAtIndex:indexPath.row]];
}
else
{
collectionImg.image = [UIImage imageNamed:[shoes objectAtIndex:indexPath.row]];
}
return cell;
}
-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
selectpath = indexPath.row;
[self performSegueWithIdentifier:@"buynow" sender:self];
}
// In a storyboard-based application, you will often want to do a little
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:@"buynow"])
{
BuyViewController *obj = segue.destinationViewController;
if ([self.receivename isEqualToString:@"Mobiles"])
{
obj.reciveimg = [mobiles objectAtIndex:selectpath];
obj.labelrecive = [mobilerate objectAtIndex:selectpath];
}
else if ([self.receivename isEqualToString:@"Costumes"])
{
obj.reciveimg = [costumes objectAtIndex:selectpath];
obj.labelrecive = [costumerate objectAtIndex:selectpath];
}
else
{
obj.reciveimg = [shoes objectAtIndex:selectpath];
obj.labelrecive = [shoerate objectAtIndex:selectpath];
}
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
}
@end
.h 파일
@interface CollectionViewController :
UIViewController<UICollectionViewDelegate,UICollectionViewDataSource>
@property (strong, nonatomic) IBOutlet UICollectionView *collectionView;
@property (strong,nonatomic) NSString *receiveimg;
@property (strong,nonatomic) NSString *receivecostume;
@property (strong,nonatomic)NSString *receivename;
@end
커스텀 셀을 작성하는 사용자:
Custom Cell.h
#import <UIKit/UIKit.h>
@interface HeaderCollectionViewCell : UICollectionViewCell
@property (strong,nonatomic) UIImageView *image;
@end
커스텀 셀
#import "HeaderCollectionViewCell.h"
@implementation HeaderCollectionViewCell
#define IMAGEVIEW_BORDER_LENGTH 5
- (instancetype)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self setup];
}
return self;
}
-(void)setup{
_image = [[UIImageView alloc] initWithFrame:(CGRectInset(self.bounds, IMAGEVIEW_BORDER_LENGTH, IMAGEVIEW_BORDER_LENGTH))];
[self addSubview:_image];
}
@end
UIView Controller.h
#import <UIKit/UIKit.h>
@interface HomeViewController : UIViewController<UICollectionViewDataSource,UICollectionViewDelegateFlowLayout>
@property (strong,nonatomic) UICollectionView *collectionView;
@end
UIView 컨트롤러.m
#import "HomeViewController.h"
#import "HomeView.h"
#import "HeaderCollectionViewCell.h"
@interface HomeViewController ()
@property (nonatomic) NSString *cellID;
@end
@implementation HomeViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = UIColor.whiteColor;
_cellID = @"id";
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
_collectionView = [[UICollectionView alloc] initWithFrame:self.view.frame collectionViewLayout:layout];
[_collectionView registerClass:[HeaderCollectionViewCell class] forCellWithReuseIdentifier:_cellID];
[_collectionView setDataSource:self];
[_collectionView setDelegate:self];
_collectionView.backgroundColor = UIColor.redColor;
[self.view addSubview:_collectionView];
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return 4;
}
- (__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
HeaderCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:_cellID forIndexPath:indexPath];
cell.image.image = [UIImage imageNamed:@"premium-icon"];
return cell;
}
-(UITabBarItem*) tabBarItem{
return [[UITabBarItem alloc] initWithTitle:@"Início" image:[UIImage imageNamed:@"home-icon"] tag:0];
}
@end
swift 4 code
//
// ViewController.swift
// coolectionView
//
import UIKit
class ViewController: UIViewController , UICollectionViewDataSource, UICollectionViewDelegate,UICollectionViewDelegateFlowLayout{
@IBOutlet weak var collectionView: UICollectionView!
var items = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", "46", "47", "48"]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.items.count
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
{
if indexPath.row % 3 != 0
{
return CGSize(width:collectionView.frame.width/2 - 7.5 , height: 100)
}
else
{
return CGSize(width:collectionView.frame.width - 10 , height: 100 )
}
}
// make a cell for each cell index path
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
// get a reference to our storyboard cell
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell1234", for: indexPath as IndexPath) as! CollectionViewCell1234
// Use the outlet in our custom class to get a reference to the UILabel in the cell
cell.lbl1.text = self.items[indexPath.item]
cell.backgroundColor = UIColor.cyan // make cell more visible in our example project
cell.layer.borderColor = UIColor.black.cgColor
cell.layer.borderWidth = 1
cell.layer.cornerRadius = 8
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
// handle tap events
print("You selected cell #\(indexPath.item)!")
}
}
언급URL : https://stackoverflow.com/questions/17856055/creating-a-uicollectionview-programmatically
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