Question

我是Xcode的新手。这是我第一次尝试UICollectionView。任何帮助是极大的赞赏。

这是我得到的错误。

libc ++ abi.dylib：以NSException类型的未捕获异常终止（lldb）

这是我的代码。

PatternViewCell.h

#import <UIKit/UIKit.h>

@interface PatternViewCell : UICollectionViewCell

@property ( nonatomic, weak)IBOutlet UIImageView *patternImageView;
@property ( nonatomic, weak)IBOutlet UILabel *patternLabel;
@end

#import <UIKit/UIKit.h>
#import "PatternViewCell.h"

@interface collectionViewController :          UIViewController<UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout>
@property (weak, nonatomic) IBOutlet UICollectionView *myCollectionView;

@end

 #import "collectionViewController.h"

@interface collectionViewController ()
@property ( nonatomic, strong) NSArray * patternImagesArray;

@end

@implementation collectionViewController

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
 PatternViewCell * cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"PatternCell" forIndexPath:indexPath];

NSString * myPatternString = [self.patternImagesArray objectAtIndex:indexPath.row];

cell.patternImageView.image = [UIImage imageNamed:myPatternString];
cell.patternLabel.text = myPatternString;

return cell;
}

-(CGSize) collectionView:(UICollectionView *)collectionView layout: (UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
return CGSizeMake(150, 150);
}

-(UIEdgeInsets) collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
{
return UIEdgeInsetsMake(5, 5, 5, 5);
}


- (void)viewDidLoad
 {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.patternImagesArray = @[@"1.png",@"2.png"@"3.png"@"4.png"];
}

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

-(NSInteger) numberOfSectionsInCollectionView:(UICollectionView   *)collectionView
 {
  return 1;

 }

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
 {
 return self.patternImagesArray.count;

 }


 @end

_

Answer 1

您好确保注册您的cell xib文件。

弹出这个：

[self.collectionView registerNib:[UINib nibWithNibName:@"YourXibCellNameHere" bundle:nil] forCellWithReuseIdentifier:@"PatternCell"];

进入collectionViewController类的“ViewDidLoad”方法。应用程序需要知道xib文件以使用。

填充UIContentView

如果您没有为单元格使用Xib文件，只需使用自定义单元格视图控制器的名称。

祝你好运！

UICollectionView - 请帮助 - 运行时出现“类型NSException”错误

1 个答案: