カスタムUICollectionViewCellを作成する方法

Question

私はUICollectionViewを持っていて、collectionViewCellにlabelとimageを設定しようとしています。残念ながら私はそれについて表示するために、または何か他のラベルを得るように思わない。

は、ここに私のコードです：

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

    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"cellIdentifier" forIndexPath:indexPath]; 

    UILabel *issue = [[UILabel alloc] initWithFrame:CGRectMake(0,10,cell.bounds.size.width,40)]; 
    if(indexPath.item %2 == 0){ 
     cell.backgroundColor=[UIColor blueColor]; 
     issue.text = @"Some Text"; 
     issue.textColor = [UIColor greenColor]; 
     issue.textAlignment = NSTextAlignmentCenter; 
    } 
    else { 
     cell.backgroundColor=[UIColor redColor]; 
     issue.text = @"Some Text"; 
     issue.textColor = [UIColor greenColor]; 
     issue.textAlignment = NSTextAlignmentCenter; 
    } 
} 

は、残念ながら、ラベルが表示されていないと、どちらもラベルのテキストではありません。

更新：このクラスファイルの残りのコードを追加しました。

#import "ContainerListController.h" 
#import "ContainerController.h" 
#import "ContainerList.h" 


@implementation ContainerListController 


//Deallocate temp variables 
- (void)dealloc { 
    [[NSNotificationCenter defaultCenter] removeObserver:self]; 
} 

//Initiate objects 
- (id)init { 
    if (self = [super initWithTitle:LocStr(@"CONTAINER_LIST_TITLE") navBarHidden:NO]) { 
     m_paths = [ContainerList shared].paths; 

     [[NSNotificationCenter defaultCenter] addObserver:self 
      selector:@selector(onContainerListDidChange) 
      name:kSDKLauncherContainerListDidChange object:nil]; 
    } 

    return self; 
} 

//Load all the views. 
- (void)loadView { 
    //Allocate a UI view 
    self.view = [[UIView alloc] init]; 

    //Create flow layout 
    UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init]; 

    //Force Horizontal Scroll 
    [layout setScrollDirection:UICollectionViewScrollDirectionHorizontal]; 
    layout.minimumInteritemSpacing =[[UIScreen mainScreen] bounds].size.width; 
    layout.minimumLineSpacing=0.0; 


    //Create Collection 
    UICollectionView *coll =[[UICollectionView alloc] initWithFrame:self.view.frame collectionViewLayout:layout]; 

    //Allocations 
    m_coll = coll; 
    coll.dataSource =self; 
    coll.delegate =self; 
    coll.pagingEnabled = YES; 
    coll.collectionViewLayout = layout; 

    //Customize Cells 
    [coll registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:@"cellIdentifier"]; 
    [coll setBackgroundColor:[UIColor orangeColor]]; 

    [layout invalidateLayout]; 

    //Create the subview 
    [self.view addSubview:coll]; 




    //set minimum spacing 
    /*if(UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation)){ 
     NSLog(@"Changed to landscape Spacing"); 
     layout.minimumLineSpacing = 100.0f; 
     layout.minimumInteritemSpacing = 100.0f; 
    } 
    else{ 

     layout.minimumLineSpacing = 40.0f; 
     layout.minimumInteritemSpacing = 40.0f; 
    }*/ 

    //Old Layout 
    //UITableView *table = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain]; 
    //m_table = table; 
    //table.dataSource = self; 
    //table.delegate = self; 
    //[self.view addSubview:table]; 

} 

- (void)onContainerListDidChange { 
    m_paths = [ContainerList shared].paths; 
    [m_table reloadData]; 
    [m_coll reloadData]; 
} 

//Debugging components function 
/*-(void)printComps:(NSArray*) components{ 
    for (NSInteger i =0; i<16; i++) { 
     NSString * item; 
     item=components[i]; 
    } 
}*/ 

//old tableview cell 
- (UITableViewCell *) 
    tableView:(UITableView *)tableView 
    cellForRowAtIndexPath:(NSIndexPath *)indexPath{ 

    UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault 
     reuseIdentifier:nil]; 
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 
    NSString *path = [m_paths objectAtIndex:indexPath.row]; 
    NSArray *components = path.pathComponents; 
    cell.textLabel.text = (components == nil || components.count == 0) ? 
     @"" : components.lastObject; 
    return cell; 
} 

//Old tableView 
- (void) 
    tableView:(UITableView *)tableView 
    didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    [tableView deselectRowAtIndexPath:indexPath animated:YES]; 
    NSString *path = [m_paths objectAtIndex:indexPath.row]; 
    ContainerController *c = [[ContainerController alloc] initWithPath:path]; 

    if (c != nil) { 
     [self.navigationController pushViewController:c animated:YES]; 
    } 
    NSLog(@"Selected an item"); 
} 

//old TableView count for epubs 
- (NSInteger) 
    tableView:(UITableView *)tableView 
    numberOfRowsInSection:(NSInteger)section{ 
    return m_paths.count; 
} 

- (void)viewDidLayoutSubviews { 

    //m_table.frame = self.view.bounds; 
    m_coll.frame = self.view.bounds; 
} 

//Collection View Cell Data Allocation 
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView 
        cellForItemAtIndexPath:(NSIndexPath *)indexPath{ 

    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"cellIdentifier" forIndexPath:indexPath]; 
    UILabel *issue = [[UILabel alloc] initWithFrame:CGRectMake(0,10,cell.bounds.size.width,40)]; 
    //UICollectionViewCell *content = [[UICollectionViewCell alloc] init]; 
    if(indexPath.item %2 == 0){ 
     cell.backgroundColor=[UIColor blueColor]; 
     issue.text = @"Some Text"; 
     issue.textColor = [UIColor greenColor]; 
     issue.textAlignment = NSTextAlignmentCenter; 
    } 
    else { 
     cell.backgroundColor=[UIColor redColor]; 
     issue.text = @"Some Text"; 
     issue.textColor = [UIColor greenColor]; 
     issue.textAlignment = NSTextAlignmentCenter; 
    } 
    NSString *path = [m_paths objectAtIndex:indexPath.row]; 
    NSArray *components = path.pathComponents; 
    NSString *Title = components.lastObject; 

    NSLog(@"Title: %@",Title); 
    NSString *Titletest = components.lastObject; 
    NSInteger comp1 = components.count; 
    NSString *comps = @"components"; 
    NSLog(@"There are: %ld %@", (long)comp1,comps); 
    NSLog(@"Title: %@",Titletest); 
    for (NSInteger i =0; i<15; i++) { 
    NSString * item; 
    item=components[i]; 
    NSLog(@"Component:%ld %@",(long)i,components[i]); 
    } 

    return cell; 
} 

//Collection View Cell Data De-Allocation 
- (void) 
collectionView:(UICollectionView *)collectionView 
numberofItemsInSection:(NSIndexPath *)indexPath{ 

    [collectionView deselectItemAtIndexPath:indexPath animated:YES]; 
    NSString *path = [m_paths objectAtIndex:indexPath.row]; 
    ContainerController *c = [[ContainerController alloc] initWithPath:path]; 

    if(c !=nil){ 
     [self.navigationController pushViewController:c animated:YES]; 
    } 
} 

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

    return m_paths.count; 
} 


//Set Collection View Cell Size 
-(CGSize) 
    collectionView:(UICollectionView *) collectionView 
    layout:(UICollectionViewLayout*)collectionViewLayout 
    sizeForItemAtIndexPath:(NSIndexPath *)indexPath{ 


    //Set Landscape size of cells 
    /*if(UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation)){ 
     CGFloat cellWidth = [[UIScreen mainScreen] bounds].size.width-360; 
     CGFloat cellHeigt = [[UIScreen mainScreen] bounds].size.height-60; 
     NSLog(@"Is Landscape"); 
     return CGSizeMake(cellWidth, cellHeigt); 
    } 
    //Set Potrait size of cells 
    else{ 
     CGFloat cellWidth = [[UIScreen mainScreen] bounds].size.width-60; 
     CGFloat cellHeigt = [[UIScreen mainScreen] bounds].size.height-160; 
     NSLog(@"Is Portrait"); 
     return CGSizeMake(cellWidth, cellHeigt); 
    }*/ 

    return CGSizeMake(collectionView.bounds.size.width, collectionView.bounds.size.height); 
} 

//Collection View Cell Position 
- (UIEdgeInsets)collectionView: 
(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section { 

    if(UIDeviceOrientationIsPortrait([UIDevice currentDevice].orientation)){ 
     return UIEdgeInsetsMake(150.0,0.0,150.0,0.0); // top, left, bottom, right 
    } 
    else{ 
     return UIEdgeInsetsMake(20.0,0.0,0.0,0.0); // top, left, bottom, right 
    } 
} 

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation{ 

    [m_coll performBatchUpdates:nil completion:nil]; 
} 

-(void)viewWillTransitionToSize:withTransitionCoordinator{ 

    [m_coll performBatchUpdates:nil completion:nil]; 
} 

/*-(CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*) 
collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section{ 

    CGFloat cellSpacing = ((UICollectionViewFlowLayout *) collectionViewLayout).minimumLineSpacing; 
    CGFloat cellWidth = ((UICollectionViewFlowLayout *) collectionViewLayout).itemSize.width; 
    NSInteger cellCount = [collectionView numberOfItemsInSection:section]; 
    CGFloat inset = (collectionView.bounds.size.width - ((cellCount-1) * (cellWidth + cellSpacing))) * 0.5; 
    inset = MAX(inset, 0.0); 

    if(UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation)){ 

     NSLog(@"Changed to landscape Spacing"); 
     return inset; 

    } 
    else{ 

     return inset; 
    } 

}*/ 
@end 

Answer 1

カスタムを使用する明確な例collectionViewCell。

コードの下に表示さUICollectionViewCellの別のクラスのサブクラスを作成します。

.hファイル：

#import <UIKit/UIKit.h> 

@interface CollectionViewCell : UICollectionViewCell 
@property (weak, nonatomic) IBOutlet UILabel *customLabel; 
@end 

.mファイル：

#import "CollectionViewCell.h" 

@implementation CollectionViewCell 

@end 

今ドラッグ＆ドロップをcollectionView内側viewControllerstoryboard次にセルセットカスタムクラスを選択し、ラベルのIBOutletを下記の画像に接続します。

絵コンテから注意ラベルや他のUIコンポーネントを追加する場合：ラベルのコンセントを接続

：カスタムクラスの設定

ドラッグをuilabel内部の細胞IBOutletを接続する前に

---

viewControllerクラス内でセルを設定します。 、dataSuorce、IBOutletを接続してcollectionViewを正しく設定してください。あなたが使用する前にcellForItemAtIndexPathメソッド内で与えられているMyCustomCell

#import "ViewController.h" 
#import "CollectionViewCell.h" 

@interface ViewController(){ 
    // instance variable deceleration part 
    NSMutableArray *yourArray; 
} 
@end 

@implementation ViewController 

- (void)viewDidLoad{ 
    [super viewDidLoad]; 
    _yourCollView.delegate = self; 
    _yourCollView.dataSource = self; 

    yourArray = [[NSMutableArray alloc] initWithObjects:@"1st cell",@"2nd cell",@"3rd cell",@"4th cell", nil]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 

// collection view delegate methods 
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{ 
    return [yourArray count]; 
} 

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

    CollectionViewCell *cell = (CollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:@"MyCustomCell" forIndexPath:indexPath]; 

    // configuring cell 
    // cell.customLabel.text = [yourArray objectAtIndex:indexPath.row]; // comment this line if you do not want add label from storyboard 

    // if you need to add label and other ui component programmatically 
    UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, cell.bounds.size.width, cell.bounds.size.height)]; 
    label.tag = 200; 
    label.text = [yourArray objectAtIndex:indexPath.row]; 

    // this adds the label inside cell 
    [cell.contentView addSubview:label]; 

    return cell; 
} 

//Note: Above two "numberOfItemsInSection" & "cellForItemAtIndexPath" methods are required. 

// this method overrides the changes you have made to inc or dec the size of cell using storyboard. 
- (CGSize)collectionView:(UICollectionView *)collectionView layout: (UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{ 
    return CGSizeMake(100, 100); 
} 

} // class ends 

セットアップ（セルを選択することによって）セル識別子は、画像の下に参照してください。

注：白にuilabelのテキストの色を変更します以前はデフォルトでcollectionViewが黒く表示されています。

こちらをご理解ください。

Answer 2

1. UICollectionViewCellのサブクラスを作成します。例えば、TestCollectionViewCell。
2. Storyboardセル内にlabelをドラッグし、このUICollectionViewCellの"Custom class"を作成したクラスで設定します。 のコレクションビューでDataSourceとDelegateを設定することを忘れないでください。collectionViewを設定すると、Reusable identifierに設定されます。
3. IBOutletをCellサブクラスに接続します。
4. numberOfItemsInSectionメソッド内に少なくとも1つの値を設定します。
5. cellForItemAtにセルのサブクラスを使用し、ラベルにテキストを設定してみます。

Answer 3

あなたが不足している：

[cell.contentView addSubview:issue];