对于像UIButton这样的UIControl,您可以使用类似 myControl.state 以确定控件当前是否处于按下状态.
With a UIControl such as a UIButton you can use something like myControl.state to figure out whether the control is currently being pressed down.
但是,我需要对某些UIBarButtonItems(不是从UIControl派生的)进行同样的操作,以便在按下其中一个时可以停止编辑表.
However, I need to do the same with some UIBarButtonItems (which are not derived from UIControl), so that I can stop my table from editing while one of them is pressed down.
这是我的代码:
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath { //other checks for(int b=0; b<self.toolbar.items.count; b++) { UIControl *currentControl= [self.toolbar.items objectAtIndex:b]; if(currentControl.state==UIControlStateHighlighted) { return NO; } } return YES; }很明显,它不起作用,因为它假定可以将UIBarButtonItems 视为UIControls,但是我该怎么做呢?
Obviously, it doesn't work, since it assumes that UIBarButtonItems can be treated as UIControls, but how would I do what I'm trying to do here?
推荐答案如果您想更好地控制UIBarButtonItems,最好的办法是将它们重新创建为UIButtons(使用自定义插图等),然后使用UIBarButtonItem的-initWithCustomView从实际的UIViews创建按钮项.
If you want more control over your UIBarButtonItems the best thing to do is to recreate them as UIButtons (using custom art, etc), and then use the -initWithCustomView of UIBarButtonItem to create button items from actual UIViews.
这将使您可以完全访问通常的按钮交互方法:唯一的缺点是,默认情况下您不会获得漂亮的条形按钮样式,而您必须自己为此提供艺术品.
This will give you full access to the usual button interactions methods: the only downside is you won't get the nice bar button style by default, and you'll have to provide the art for this yourself.
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如何以编程方式获取UIBarButtonItems的状态?
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