我想在UINavigationControllers顶部栏中的某个位置嵌入UISegmentedControl。 将其嵌入UIBarButtonItem并将其设置为左或右barButtonItem没问题。 在处理iPhone的屏幕空间时,我可以理解这种方法。但是,我在iPad上的Popover中进行此操作,并且顶部栏中有“大量”的垂直空间。如果我将segmentedControl添加为左或右barButtonItem,它会按比例缩小,因此我看不到细分按钮上的文本,它的宽度就是“完成”按钮等的宽度。如果我尝试将其添加到navigationItem TitleView会一直显示到最右边,但仍然缩小到比我的文本显示的3段控件更大的比例。 我将如何添加UISegmentedControl到包装我的弹出窗口内容的UINavigationController的中心。 希望有人能帮助我:)预先感谢。
2020-12-14 08:20:35
为什么需要将控件放在弹出式标题栏中? iPad具有更多的屏幕空间,可以考虑将其放入以下视图。 -编辑- 我自己尝试过,并且有效。这是设置弹出框控制器的代码: -(IBAction)showPopover:(id)发送者 { TestController * testController = [[TestController alloc] initWithStyle:UITableViewStylePlain]; UINavigationController * navController = [[UINavigationController alloc] initWithRootViewController:testController]; UIPopoverController * controller = [[UIPopoverController alloc] initWithContentViewController:navController]; [控制器presentPopoverFromBarButtonItem:发送者允许的ArrowDirections:UIPopoverArrowDirectionAny动画:是]; controller.delegate =自我; [testController发布]; [navController版本]; } 这是TestController的实现: -(id)initWithStyle:(UITableViewStyle)样式 { if((self = [super initWithStyle:style])){ UISegmentedControl * ctrl = [[UISegmentedControl alloc] initWithFrame:CGRectZero]; ctrl.segmentedControlStyle = UISegmentedControlStyleBar; [ctrl insertSegmentWithTitle:@“ One” atIndex:0动画:NO]; [ctrl insertSegmentWithTitle:@“ Two” atIndex:0动画:否]; [ctrl insertSegmentWithTitle:@“三” atIndex:0动画:否]; [ctrl sizeToFit]; //以下任何一项都会产生预期的结果: self.navigationItem.titleView = ctrl; //self.navigationItem.leftBarButtonItem = [[[[UIBarButtonItem alloc] initWithCustomView:ctrl] autorelease]; [ctrl发布]; } 返回自我 } 结果如下: 除了将sizeToFit发送到分段控件外,我的代码中没有任何技巧。这对您有用吗? 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