报错信息The behavior of the UICollectionViewFlowLayout is not defined because:Make a symbolic breakpoint at UICollectionViewFlowLayoutBreakForInvalidSizes to catch this in the debugger.滚动视图即（UICollectionView或者UIScrollView 等继承自UIScrollView的视图适用）//设置控制器不自动计算

#define ScreenWidth ([UIScreen mainScreen].bounds.size.width)#define Screenheight ([UIScreen mainScreen].bounds.size.height)@property (weak,nonatomic) IBOutletUICollectionView *collectionV

//  方法一[_collectionViewscrollToItemAtIndexPath:[NSIndexPathindexPathForRow:0inSection:0]                           atScrollPosition:UICollectionViewScrollPositionNone

//按钮金额数组@property (nonatomic,strong)NSArray *moneyArr;//选中后添加的数组@property (nonatomic,strong)NSMutableArray *rightLabelArray;- (void)initCollectionView:(UIView *)veew { _moneyArr = @[@...

#define JianGe 25#define GeShu 4#define ScreenWidth ([UIScreen mainScreen].bounds.size.width)#define Screenheight ([UIScreen mainScreen].bounds.size.height)//定义每个UICollectionView 的大小- ( CG...

[_collectionViewreloadItemsAtIndexPaths:[NSArrayarrayWithObjects:[NSIndexPathindexPathForRow:indexPath.row inSection:0],nil]];

    self.extendedLayoutIncludesOpaqueBars = YES;    if (@available(iOS 11.0, *)) {        self.tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;            } else {  ...

#import "Cell.h"static NSString *ident = @"Cell";#import "HeaderCollectionReusableView.h"static NSString *head = @"HeaderCollectionReusableView";    - (void)viewDidLoad {    [super vie...

// tableview 加载完成可以调用的方法 -(void) tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath { if([indexPath row] =...