iphone - How can I use an UIBarButtonItem style without the UIToolBar

问题

Can I show a black style UIBarButtonItem in my view without the underneath UIToolBar?

The UIToolBar always has a kind of border thing, I want the system UIBarButtonItem in black just like a black standard cancel button, but not the UIToolBar

How can I do it?

Thanks

回答1:

there is a cheeky hack that will help you with this.

you want to use a UISegmentedControl with style set to UISegmentedControlStyleBar and only one item. You also need to setMomentary to yes - to make it behave like a button:

UISegmentedControl *myCustomButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:@"Hello",nil]];
[myCustomButton setSegmentedControlStyle:UISegmentedControlStyleBar];
[myCustomButton setTintColor:[UIColor blackColor]];
[myCustomButton setMomentary:YES];
[self.view addSubview:myCustomButton];

This will give you a button that looks like a UIBarButtonItem that you can add to your normal view as if it were a button. You can add a target and an action as well. :)

This is what you get: something like this:

回答2:

I haven't exactly done anything like that, but I suggest you could somehow set all the UIToolBar's subviews alpha to zero except for the UIBarButtonItem . Just leave the UIBarButtonItem visible.

UIToolBar inherits from UIView, so my first try would be to set its backgroundColor to clearColor.

来源：https://stackoverflow.com/questions/4015694/iphone-how-can-i-use-an-uibarbuttonitem-style-without-the-uitoolbar