将UIActivityIndicatorView添加到UIBarButton中

如何将UIActivityIndicatorView微调器圆添加到UIBarButton中，以便当用户点击导航栏上的这些按钮之一时，它们在加载发生时看到微调器？将UIActivityIndicatorView添加到UIBarButton中

2009-11-12 quantum

如果你想显示的导航栏按钮的活动轮（例如，你可能对你的导航栏刷新按钮） - 你可以用自定义视图作为UIActivityIndicatorView创建一个新的UIBarButtonItem：

目标C

uiBusy = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite]; 
uiBusy.hidesWhenStopped = YES; 
[uiBusy startAnimating]; 
[self.navigationItem.rightBarButtonItem initWithCustomView:uiBusy];

夫特

let uiBusy = UIActivityIndicatorView(activityIndicatorStyle: .White) 
uiBusy.hidesWhenStopped = true 
uiBusy.startAnimating() 
self.navigationItem.rightBarButtonItem = UIBarButtonItem(customView: uiBusy)

这会用旋转轮盖写您的rightBarButtonItem。完成后，只需重新创建rightBarButtonItem即可。

来源

2011-02-01 20:22:54 ferdil

'[self.navigationItem.rightBarButtonItem initWithCustomView： uiBusy];'对我来说似乎很狡猾。我期望'self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView：uiBusy];'根据@ emotality的答案。 – 2015-09-01 19:40:47

备案：您通常要设置'uiBusy.activityIndicatorViewStyle = .gray' – Jeremy 2017-09-06 11:25:20

我使用计算属性来访问uiBusy：'private var uiBusy：UIActivityIndicatorView {if} if if busyView = self.navigationItem.rightBarButtonItem？.customView as？UIActivityIndicatorView { 回报busyView }其他{ 让uiBusy = UIActivityIndicatorView（activityIndicatorStyle：。白） uiBusy.hidesWhenStopped =真 uiBusy.activityIndicatorViewStyle = .gray self.navigationItem.rightBarButtonItem =的UIBarButtonItem（customView：uiBusy）回报uiBusy ' }' – Jeremy 2017-09-06 11:26:43

-1

UIActivityIndicatorView是一种视图。将其框架设置在您的按钮中，并使用-addSubview将其添加到UIBarButton的视图层次结构中。

我简单化，因为你必须设法使其适合空间（可能通过缩放）和居中......

来源

2009-11-12 05:38:20 mahboudz

-1

伪代码，我不打算在Xcode中检查这一点，但东西像这样应该工作：

UIActivityIndicatorView *act = [[UIActivityIndicatorView alloc] init]; 
act.frame = CGMakeRect(3,3,25,25); 
[myBarButton addSubview:act]; 
[act release];

来源

2009-11-12 05:41:49

'UIBarButtonItem'不是'UIView'子类，没有'addSubview：'。你应该做一些像'UIBarButtonItem * myBarButton = [[UIBarButtonItem alloc] initWithCustomView：act];'而不是'myBarButton.customView = act;'。 – 2010-02-23 16:40:30

其实活动指标不会被添加为工具栏项目。这是当前观点的子视图。


    UIActivityIndicatorView *act = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite]; 
    [act setCenter:CGPointMake(20, 20)]; 
    [act startAnimating]; 
    [self.view addSubview:act];

请记住在-(void)dealloc中发布它。

来源

2009-11-12 07:59:14

有关如何使用活动指标的更多信息，请访问： http://stackoverflow.com/questions/593234/how-to-use-activity-indicator-view-on-iphone – 2009-11-12 08:03:56

activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite]; 
activityIndicator.hidesWhenStopped = YES; 
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:activityIndicator];

将以下何地需要：

[activityIndicator startAnimating]; 
[activityIndicator stopAnimating];

来源

2013-02-21 08:00:34 emotality

使用此方法

-(void)startAniatingActivityIndicator{ 
@try { 
    activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite]; 
    activityIndicator.frame = CGRectMake(self.window.frame.size.width-30, 32.5, activityIndicator.bounds.size.width, activityIndicator.bounds.size.height); 
    [self.window addSubview:activityIndicator]; 
    [activityIndicator startAnimating]; 
    [self.window bringSubviewToFront:activityIndicator]; 
} 
@catch (NSException *exception) { 

} 
@finally { 

}

}

-(void)stopAniatingActivityIndicator{ 
[activityIndicator stopAnimating]; 
[activityIndicator removeFromSuperview]; 
activityIndicator = nil;

}

来源

2014-04-26 05:54:32

将UIActivityIndi​​catorView添加到UIBarButton中

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将UIActivityIndicatorView添加到UIBarButton中