TableView 的拉取刷新问题

Question

我已经用两个自定义原型单元格在 UITableview 中添加了拉动刷新，我已经尝试使用这两种类型的代码，一种是通过添加 UIRefreshcontrol 作为 tableview 的子视图，另一种是通过 UITableViewController

1)UIRefreshcontrol作为tableview的子视图

self.refreshControl = [[UIRefreshControl alloc] init];
self.refreshControl.tintColor = [UIColor blackColor];
[self.refreshControl addTarget:self action:@selector(refresh) forControlEvents:UIControlEventValueChanged];
[listTable addSubview:self.refreshControl];

2)通过 UITableViewController

UITableViewController *tableViewController = [[UITableViewController alloc] init];
tableViewController.tableView = listTable;

self.refreshControl = [[UIRefreshControl alloc] init];
[self.refreshControl addTarget:self action:@selector(refreshContacts) forControlEvents:UIControlEventValueChanged];
tableViewController.refreshControl = self.refreshControl;

但它们似乎都不起作用。

Answer 1

查看这些链接以获取信息

UIRefreshControl - Pull To Refresh in iOS 7

http://www.techrepublic.com/blog/software-engineer/better-code-implement-pull-to-refresh-in-your-ios-apps/

例子

UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init];
refreshControl.backgroundColor = [UIColor clearColor];
refreshControl.tintColor = [UIColor whiteColor];
[refreshControl addTarget:self
                   action:@selector(getLatestData)
         forControlEvents:UIControlEventValueChanged];

[yourTableviewName addSubview:refreshControl];


   -(void)getLatestData
{
 // here add your reload method
  [self XXXXX]; 

  NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
  [formatter setDateFormat:@"MMM d, h:mm a"];
   NSString *title = [NSString stringWithFormat:@"Last update: %@", [formatter stringFromDate:[NSDate date]]];
   NSDictionary *attrsDictionary = [NSDictionary dictionaryWithObject:[UIColor whiteColor]
                                                                    forKey:NSForegroundColorAttributeName];
   NSAttributedString *attributedTitle = [[NSAttributedString alloc] initWithString:title attributes:attrsDictionary];
        refreshControl.attributedTitle = attributedTitle;

        [refreshControl endRefreshing];
    }

Answer 2

第二种方式与我在What's the Best Way to Get a "Pull to Refresh" from a UITableView? 中建议的代码几乎相同，所以我认为您的错误在tableViewController 中。它会被保留吗？

Answer 3

在.h中

@property(nonatomic,strong) UIRefreshControl *refreshControl;

.m

- (void)viewDidLoad {
    [super viewDidLoad];
 //Initialize the refresh control
    self.refreshControl = [[UIRefreshControl alloc] init];
    [self.refreshControl addTarget:self action:@selector(refreshBrandList:) forControlEvents:UIControlEventValueChanged];
    [self.tableView addSubview:self.refreshControl];

}


-(void) refreshBrandList:(id)sender{
    [self ServiceCall];
    [self.refreshControl endRefreshing];


}

Answer 4

SVPullToRefresh + SVInfiniteScrolling

• 易于使用。
• 提供下拉刷新

Easy to add pull-to-refresh and infinite scrolling fonctionalities to any UIScrollView or UITableView