xcode 如何禁用导航的右侧栏按钮
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How to disable the right bar button of navigation
提问by madhavi
self.navigationItem.rightBarButtonItem.enabled = FALSE;
[activityIndicator startAnimating];
//[myview sendSubviewToBack:self.view];
//self.view.hidden= TRUE;
myview.hidden= FALSE;
activityIndicator.hidden= FALSE;
dt = [[DateTime alloc] init];
This is my method in this when user click on leftbar button of navigation this method fires here i want to disable the button but its not getting disable and i checked my code i am not enabling it anywhere.......Please help me
这是我的方法，当用户单击导航的左栏按钮时，此方法会在此处触发
采纳答案by Steve Neal
If properties aren't initialised properly in Objective-C you won't see any errors, the statement just won't get executed..
如果在 Objective-C 中没有正确初始化属性，您将不会看到任何错误，该语句将不会被执行..
My first guess would be that you're calling a method on a nil reference.
我的第一个猜测是你在一个 nil 引用上调用一个方法。
Use the debugger to see whether the rightBarButtonItem has been set up properly.
使用调试器查看rightBarButtonItem 是否设置正确。
回答by beryllium
Just
只是
self.navigationItem.rightBarButtonItem.enabled = NO;
