带有表视图的MBProgresshud [英] MBProgresshud with tableview

问题描述

我正在制作一个带有表视图的应用程序.我想使用MBProgressHUD实现一个加载屏幕，以便在从Internet读取数据之前显示该屏幕.但是，使用以下代码不会显示数据:

I am making a application with a tableview in it. I would like to implement a loading screen, using MBProgressHUD such that it will display before data is read from internet. However the data's not shown using following code:

- (void)viewDidLoad
{

HUD = [[MBProgressHUDalloc] initWithView:self.view];

[self.viewaddSubview:HUD];
HUD.delegate = self;



[HUD showWhileExecuting:@selector(load_data) onTarget:self withObject:nil animated:YES];


}

可以单独使用load_data函数(即[self load_data]，但不能使用HUD在表格视图中显示数据.

the data can be shown in tableview using the function load_data alone (i.e [self load_data], but not with HUD.

推荐答案

我喜欢使用仅能做到这一点的单独方法来呈现和隐藏​​HUD.例如

I like to present and hide the HUD with separate methods that only do that. e.g.

#pragma mark - The HUD

-(void)showHudWithText:(NSString *)text {   
   if (self.hud == nil) {
      self.hud = [[[MBProgressHUD alloc] initWithWindow:self.window] autorelease];
      [self.window addSubview:hud];
   }

   [self.hud setLabelText:text];
   [self.hud setMode:MBProgressHUDModeIndeterminate];
   [self.hud show:YES];
}

-(void)hideHud {
   [self.hud hide:YES];
}

这允许独立于视图生命周期以及异步方法，计时器等来控制HUD.例如:

This allows the HUD to be controlled independently of the view life cycle, as well as from asynchronous methods, timers, etc. e.g:

-(void)viewDidLoad {
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showHudWithText:) name:kSomethingImportantStartedNotification object:@"Starting..."];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideHud) name:kSomethingImportantEndedNotification object:nil];
}

或者类似的东西.

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