当收集视图在ios中没有数据时，拉到刷新不能在收集视图中工作

Question

这是我在worldview方法中的刷新控件。

self.colView.refreshControl = [[UIRefreshControl alloc] init]; 
    self.colView.refreshControl.backgroundColor = [UIColor purpleColor]; 
    self.colView.refreshControl.tintColor = [UIColor whiteColor]; 
    [self.colView.refreshControl addTarget:self 
        action:@selector(refresh) 
        forControlEvents:UIControlEventValueChanged]; 

Answer 1

请试试这段代码。收集视图失去了我们的身高

self.colView.alwaysBounceVertical = YES; 

Answer 2

您的代码看起来不错，只需在顶部移动tableview并在将其添加到collectionview之前设置一些框架即可。即使您的收藏视图内容视图的帧大小为0，这也可以工作：

-(void)addPullToRefressToTableView { 

    UIView *refreshView = [[UIView alloc] initWithFrame:CGRectMake(0, 10, 0, 0)]; 
    [self.tableView insertSubview:refreshView atIndex:0]; 

    UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init]; 
    refreshControl.tintColor = [UIColor grayColor]; 
    [refreshControl addTarget:self action:@selector(reloadDatas) forControlEvents:UIControlEventValueChanged]; 
    NSMutableAttributedString *refreshString = [[NSMutableAttributedString alloc] initWithString:@"Pull To Refresh"]; 
    [refreshView addSubview:refreshControl]; 
}