iphone - 如何在导航栏中添加多个控件？

我想在iOS的NavigationBar中插入一个按钮和一个标签。

我已经尝试过UISegmentedControl，并且可以通过一个控件完全正常地工作!

现在的问题是，我想添加多个控件，就像我之前说过的那样，我该怎么办？

看我的代码

UIView *v;
[v insertSubview:listingsLabel atIndex:0];
[v insertSubview:shareBtn atIndex:1];

[v setFrame:[self.navigationController.toolbar bounds]];
self.navigationItem.titleView = v;
v.frame = CGRectMake(0, 0, 200, 29);

它给了我EXC_BAD_ACCESS的错误

最佳答案

UIToolbar* tools = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 100, 44.01)];

// create the array to hold the buttons, which then gets added to the toolbar
NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:3];

// create a standard "add" button
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:[NSArray array]];
[segmentedControl insertSegmentWithTitle:@"All" atIndex:0 animated:NO];
[segmentedControl insertSegmentWithTitle:@"Related" atIndex:1 animated:NO];
segmentedControl.selectedSegmentIndex = 0;
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
[segmentedControl addTarget:self action:@selector(segmentedAction:) forControlEvents:UIControlEventValueChanged];
// create a standard "add" button
UIBarButtonItem* bi = [[UIBarButtonItem alloc] initWithCustomView: segmentedControl];
bi.style = UIBarButtonItemStyleBordered;
[buttons addObject:bi];
[bi release];

// create a spacer
bi = [[UIBarButtonItem alloc]
      initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
[buttons addObject:bi];
[bi release];

// create a standard "refresh" button
bi = [[UIBarButtonItem alloc]
      initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:self action:@selector(save:)];
bi.style = UIBarButtonItemStyleBordered;
[buttons addObject:bi];
[bi release];

// stick the buttons in the toolbar
[tools setItems:buttons animated:NO];

[buttons release];

// and put the toolbar in the nav bar
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:tools];
[tools release];

关于iphone - 如何在导航栏中添加多个控件？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/9684431/