iphone - 有时 MBProgressHUD 不显示

Question

我在 uitableview 中显示了歌曲标题列表以及“购买”按钮。点击该按钮时我正在显示 MBProgressHUD。但有时它不会显示。它还会禁用用户交互，如下所示代码。

但为什么有时不显示 MBProgressHUD？

请告诉我，非常感谢。

Below is the code

-(void) buySong:(UIButton *)button
    {
      self.view.userInteractionEnabled = NO;

      self.navigationController.navigationBar.userInteractionEnabled = NO;

      MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
      hud.labelText = @"Proessing...";
      hud.yOffset = -80;

      UITableViewCell *cell = (UITableViewCell *)[[button superview] superview];
      NSIndexPath *indexPath = [[self tblViewChildrenPoems] indexPathForCell:cell];

      PSSongTags *songTags = [self.songsArray objectAtIndex:indexPath.row];
      [ [PurchaseViewController sharedPurchaseManager] startPurchase:songTags];

    }

Answer 1

试试这个代码可能对你有帮助...

在您的 .h 文件中导入 .

 #import "MBProgressHUD.h"

设置委托(delegate)。

MBProgressHUDDelegate

之后

MBProgressHUD *HUD;

在您的 .m 文件中//在您想要显示的位置添加此代码 ...

HUD = [[MBProgressHUD alloc] initWithView:self.navigationController.view];
    [self.navigationController.view addSubview:HUD];
    HUD.delegate = self;
    HUD.labelText = @"Authorizing...";
    [HUD show:YES];

以及当您的流程结束使用 hide ..

[HUD Hide:YES];

并在您的 m 文件中设置隐藏委托(delegate)......

- (void)hudWasHidden:(MBProgressHUD *)hud {
    // Remove HUD from screen when the HUD was hidded
    [HUD removeFromSuperview];
    [HUD release];
    HUD = nil;
}

快乐编码...