UINavigationController导航栏中添加多个UIBarButtonItem

2011-02-16 13:56:33| 分类： iPhone&iPad开发 | 标签：uinavigationcontroller uibarbuttonitem uitoolbar |举报|字号订阅

（方法一）如果你使用自己的图片，那么就用这种方法：

UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 51, 32)];

UIButton *leftButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 51, 32)];

[leftButton setBackgroundImage:[UIImage imageNamed:@"back.png"]forState:UIControlStateNormal];

[leftButton setBackgroundImage:[UIImage imageNamed:@"back_pressed.png"]forState:UIControlStateHighlighted];

[leftView addSubview:leftButton];

（方法二）如果你没有图片，只使用文字就用这种方法：

self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]initWithCustomView:leftView];

（方法三）如果你的图片能完美的和UIBarButtonItem衔合，就用这种方法：

self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImageimageNamed:@"back.png"] style:UIBarButtonItemStylePlain target:selfaction:@selector(backActions:)];

我建议还是用第一中方法。

如果想使用更多地功能，往下看。

转自王军的博客

在实际的开发中，导航器是最重要的容器之一，我们经常要在导航栏中添加各种样式的按钮，添加一个按钮很简单，代码如下：

UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:@"Setting" style:UITabBarSystemItemContacts
target:self action:@selector(clickSettings:)];
self.navigationItem.rightBarButtonItem = anotherButton;
[anotherButton release];

其中按钮的样式可以有多种，具体的可以参考：https://developer.apple.com/library/ios/prerelease/#documentation/UIKit/Reference/UIBarButtonItem_Class/

在有些项目中要在右面添加两个按钮，实现的样式如下图：

实现的代码如下图：

UIToolbar* tools = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 150, 45)];
[tools setTintColor:[self.navigationController.navigationBar tintColor]];
[tools setAlpha:[self.navigationController.navigationBar alpha]];
NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:2];

UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
                        target:self action:@selector(clickSettings:)];

UIBarButtonItem *anotherButton1 = [[UIBarButtonItem alloc] initWithTitle:@"Edit" style:UITabBarSystemItemContacts
                                                        target:self action:@selector(clickEdit:)];
[buttons addObject:anotherButton];
[anotherButton release];
[buttons addObject:anotherButton1];
[anotherButton1 release];
[tools setItems:buttons animated:NO];
[buttons release];
UIBarButtonItem *myBtn = [[UIBarButtonItem alloc] initWithCustomView:tools];
self.navigationItem.rightBarButtonItem = myBtn;

[myBtn release];
[tools release];

UIToolbar* tools = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 150, 45)];
[tools setTintColor:[self.navigationController.navigationBar tintColor]];
[tools setAlpha:[self.navigationController.navigationBar alpha]];
NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:2];

UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
                        target:self action:@selector(clickSettings:)];

UIBarButtonItem *anotherButton1 = [[UIBarButtonItem alloc] initWithTitle:@"Edit" style:UITabBarSystemItemContacts
                                                        target:self action:@selector(clickEdit:)];
[buttons addObject:anotherButton];
[anotherButton release];
[buttons addObject:anotherButton1];
[anotherButton1 release];
[tools setItems:buttons animated:NO];
[buttons release];
UIBarButtonItem *myBtn = [[UIBarButtonItem alloc] initWithCustomView:tools];
self.navigationItem.rightBarButtonItem = myBtn;

[myBtn release];
[tools release];

http://blog.sina.com.cn/s/blog_677089db0100um5p.html

次方法验证，暂时不可行，没查明原因

UIView * rightButtonParentView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 44)];

  rightButtonParentView.backgroundColor = [UIColor clearColor];

   int buttonSize = 32;
   int rightOffset = 20;
   UIButton * setButton = [[UIButton alloc] initWithFrame:CGRectMake(rightButtonParentView.frame.size.width - buttonSize - rightOffset, 6, buttonSize, buttonSize)];
   [setButton setBackgroundImage:[UIImage imageNamed:@"star.png"] forState:UIControlStateNormal];
   [setButton addTarget:self action:@selector(NSlog) forControlEvents:UIControlEventTouchUpInside];
   [rightButtonParentView addSubview:setButton];
   [setButton release];

   UIButton * searchButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 6, buttonSize, buttonSize)];
   [searchButton setBackgroundImage:[UIImage imageNamed:@"star.png"] forState:UIControlStateNormal];
   [searchButton addTarget:self action:@selector(NSlog) forControlEvents:UIControlEventTouchUpInside];
   [rightButtonParentView addSubview:searchButton];
   [searchButton release];


   UIBarButtonItem * rightButtonItem = [[UIBarButtonItem alloc] initWithCustomView:rightButtonParentView];
   [rightButtonParentView release];
   self.navigationItem.rightBarButtonItem = rightButtonItem;
   [rightButtonItem release];

超出父视图大小