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- (void)viewDidLoad {
[super viewDidLoad];
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = NO;
// Register cell classes
//这种注册方法不能用于拉的cell ，要用uinib来注册
//[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:reuseIdentifier];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
#pragma mark <UICollectionViewDataSource>
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
return 50;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
UICollectionViewCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
//代码中加了一句 cell.backgroundColor = [UIColor blueColor]就可以显示Cell了
//cell.backgroundColor=[UIColor cyanColor];
return cell;
}
//这种注册方法不能用于拉的cell，要用uinib来注册
//[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:reuseIdentifier];
刚开始拖控件时 注册了这个cell控件就没有显示出来
1、通过[self.collectionView registerClass:[UICollectionViewCellEx class] forCellWithReuseIdentifier:reuseIdentifier];注释掉
http://cdn.cocimg.com/bbs/attachment/Fid_21/21_234319_19f01d929fc2914.png
2、给cell控件手动设置下背景颜色 竟然显示出来了
UICollectionViewCell *cell=[collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
//代码中加了一句 cell.backgroundColor = [UIColor blueColor]就可以显示Cell了
//cell.backgroundColor=[UIColor cyanColor];
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