当集合视图在ios中没有数据时，拉动以刷新不在集合视图中工作

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

请尝试此代码。收藏视图失去了我们的高度。

self.colView.alwaysBounceVertical = YES;

Answer 2

您的代码看起来很好，只需要将tableview移到顶部并在将其添加到collectionview之前设置一些框架。即使您的集合视图内容视图具有0帧大小，这也将起作用：

 -(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];
}