Question

我正在尝试将Pull刷新到我的UITableView。拉动效果和刷新效果很好！但标签

加载，拉动刷新，微调器没有出现在我的tableView中。

这是我的代码，它将视图刷新添加到tableview

如果我改变了

refreshHeaderView的框架

到

   refreshHeaderView = [[UIView alloc] initWithFrame:CGRectMake(10,  REFRESH_HEADER_HEIGHT, 300, REFRESH_HEADER_HEIGHT)];

出现标签和微调器！但在第一个牢房之上！

- (void)addPullToRefreshHeader {
refreshHeaderView = [[UIView alloc] initWithFrame:CGRectMake(10, 0 - REFRESH_HEADER_HEIGHT, 300, REFRESH_HEADER_HEIGHT)];
refreshHeaderView.backgroundColor = [UIColor clearColor];

refreshLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, REFRESH_HEADER_HEIGHT)];
refreshLabel.backgroundColor = [UIColor clearColor];
refreshLabel.font = [UIFont boldSystemFontOfSize:12.0];
refreshLabel.textAlignment = NSTextAlignmentCenter;

refreshArrow = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"arrow.png"]];
refreshArrow.frame = CGRectMake(floorf((REFRESH_HEADER_HEIGHT - 27) / 2),
                                (floorf(REFRESH_HEADER_HEIGHT - 44) / 2),
                                27, 44);

refreshSpinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray
                  ];
refreshSpinner.frame = CGRectMake(floorf(floorf(REFRESH_HEADER_HEIGHT - 20) / 2),    
       floorf((REFRESH_HEADER_HEIGHT - 20) / 2), 20, 20);
refreshSpinner.hidesWhenStopped = NO;

[refreshHeaderView addSubview:refreshLabel];
[refreshHeaderView addSubview:refreshArrow];
[refreshHeaderView addSubview:refreshSpinner];
[self.tbFeeds addSubview:refreshHeaderView];
  }

修改

我通过以下更改解决了我的问题：

- (void)addPullToRefreshHeader {
refreshHeaderView = [[UIView alloc] initWithFrame:CGRectMake(10, 108, 300, REFRESH_HEADER_HEIGHT)];
refreshHeaderView.backgroundColor = [UIColor clearColor];

refreshLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, REFRESH_HEADER_HEIGHT)];
refreshLabel.backgroundColor = [UIColor clearColor];
refreshLabel.font = [UIFont boldSystemFontOfSize:12.0];
refreshLabel.textAlignment = NSTextAlignmentCenter;

refreshArrow = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"arrow.png"]];
refreshArrow.frame = CGRectMake(floorf((REFRESH_HEADER_HEIGHT - 27) / 2),
                                (floorf(REFRESH_HEADER_HEIGHT - 44) / 2),
                                27, 44);

refreshSpinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray
                  ];
refreshSpinner.frame = CGRectMake(floorf(floorf(REFRESH_HEADER_HEIGHT - 20) / 2),
floorf((REFRESH_HEADER_HEIGHT - 20) / 2), 20, 20);
refreshSpinner.hidesWhenStopped = NO;
[refreshHeaderView addSubview:refreshLabel];
[refreshHeaderView addSubview:refreshArrow];
[refreshHeaderView addSubview:refreshSpinner];
[viewGeral addSubview:refreshHeaderView];
[viewGeral bringSubviewToFront:_tbFeeds]; }

UITableView Pull to Refresh不显示标签和微调器

0 个答案: