直接上代码
1.定义block
@interface TopTypeCollectionView : UIView
@property (nonatomic, strong) NSArray *typeItemArray;//数据源
typedef void(^Blo)(NSString *s1 , UIColor *c);//定义block名字
@property (nonatomic , copy) Blo block;//声明
/**
cell点击回调Block
*/
@property (nonatomic , copy) void (^clickCellCb)(NSString *group,int index);//匿名block
@end
2.TopTypeCollectionView中调用
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
//调用block
if (self.clickCellCb) {
self.clickCellCb(self.group , (int)indexPath.row);
}
}
3.初始化block
__weak ViewController *weakself = self;
//类型列表
TopTypeCollectionView *topTypeView = [[TopTypeCollectionView alloc] initWithFrame:CGRectZero];
topTypeView.typeItemArray = @[];
topTypeView.backgroundColor = [UIColor whiteColor];
topTypeView.group = group;
//点击cell,打开页面
topTypeView.clickCellCb = ^(NSString *groupTemp , int index){
[weakself openWallpaperView:groupTemp index:index];
};
转载于:https://my.oschina.net/huqiji/blog/834205