在导航栏中添加栏按钮项目

Question

我正在使用导航栏按钮项目。我使用以下代码来执行此操作，

UIBarButtonItem *btnSave = [[UIBarButtonItem alloc] 
                                    initWithTitle:@"Save"                                            
                                    style:UIBarButtonItemStyleBordered 
                                    target:self 
                                 action:@selector(save_Clicked:)];
     self.navigationItem.rightBarButtonItem = btnSave;
     [btnSave release];

     UIBarButtonItem *btnCancel = [[UIBarButtonItem alloc] 
                                    initWithTitle:@"Cancel"                                            
                                    style:UIBarButtonItemStyleBordered 
                                    target:self 
                                    action:@selector(save_Clicked)];
     self.navigationItem.leftBarButtonItem = btnCancel;
     [btnCancel release];

我的问题是如何在左栏按钮项目旁边添加另一个按钮。 提前致谢

Answer 1

为此，您需要创建一个工具栏，然后继续向其中添加 UIButton，然后将工具栏设置为 leftBarButton，

如下所示：

UIToolbar* tools = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 250, 44)];
tools.tintColor = [UIColor clearColor];
[tools setTranslucent:YES];

NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:9];

UIImage *myImage = [UIImage imageNamed:@"AL_HomeMod_Icon.png"];
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton setImage:myImage forState:UIControlStateNormal];
myButton.showsTouchWhenHighlighted = YES;
myButton.frame = CGRectMake(0.0, 0.0, myImage.size.width, myImage.size.height);

[myButton addTarget:self action:@selector(clickViewHomeMod) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem *bi = [[UIBarButtonItem alloc]
                       initWithCustomView:myButton];

[buttons addObject:bi];
[bi release];

myImage = [UIImage imageNamed:@"AL_History_Icon.png"];
myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton setImage:myImage forState:UIControlStateNormal];
myButton.showsTouchWhenHighlighted = YES;
myButton.frame = CGRectMake(0.0, 0.0, myImage.size.width, myImage.size.height);

[myButton addTarget:self action:@selector(clickViewHistory) forControlEvents:UIControlEventTouchUpInside];

bi = [[UIBarButtonItem alloc]
      initWithCustomView:myButton];

[buttons addObject:bi];
[bi release];

myImage = [UIImage imageNamed:@"AL_RX_Icon.png"];
myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton setImage:myImage forState:UIControlStateNormal];
myButton.showsTouchWhenHighlighted = YES;
myButton.frame = CGRectMake(0.0, 0.0, myImage.size.width, myImage.size.height);

[myButton addTarget:self action:@selector(clickViewCustomPopView2) forControlEvents:UIControlEventTouchUpInside];

bi = [[UIBarButtonItem alloc]
      initWithCustomView:myButton];

[buttons addObject:bi];
[bi release];

myImage = [UIImage imageNamed:@"AL_User_Icon.png"];
myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton setImage:myImage forState:UIControlStateNormal];
myButton.showsTouchWhenHighlighted = YES;
myButton.frame = CGRectMake(0.0, 0.0, myImage.size.width, myImage.size.height);

[myButton addTarget:self action:@selector(clickViewCustomPopView:) forControlEvents:UIControlEventTouchUpInside];
bi = [[UIBarButtonItem alloc]
      initWithCustomView:myButton];
[buttons addObject:bi];
popButton = myButton;
[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];

希望对

Pondd有帮助

Answer 2

创建一个按钮，

UIBarButtonItem *logoutButton = [[UIBarButtonItem alloc] 
                                initWithImage:[UIImage imageNamed:@"logout.png"] 
                                style:UIBarButtonItemStylePlain 
                                target:self action:@selector(doLogout)];

将此按钮添加到导航栏右侧

self.navigationItem.rightBarButtonItem = logoutButton;

或将此按钮添加到导航栏左侧

self.navigationItem.leftBarButtonItem = logoutButton;

doLogout 是一个在触摸注销按钮时调用的函数

Answer 3

我通过使用以下代码完成了我的任务：

UIToolbar *tools=[[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 150, 44)];

tools.backgroundColor=[UIColor clearColor];

 [tools setTranslucent:YES];

UIBarButtonItem *optionBtn=[[UIBarButtonItem alloc]initWithTitle:@"Options" style:UIBarButtonItemStyleBordered target:self action:@selector(optionPressed:)];

UIBarButtonItem *doneBtn=[[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStyleBordered target:self action:@selector(donePressed:)];

 NSArray *buttons=[NSArray arrayWithObjects:optionBtn,doneBtn, nil];

    [tools setItems:buttons animated:NO];

 self.navigationItem.rightBarButtonItem=[[UIBarButtonItem alloc]initWithCustomView:tools];

注意：从 IOS 5.0 开始，苹果已经做得更容易了。可以这样做

self.navigationItem.rightBarButtonItems=[NSArray arrayWithObjects:optionBtn,doneBtn, nil];

Answer 4

创建一个带有两个按钮的自定义视图，并使用 UIBarButtonItem 的 initWithCustomView:初始化程序。应该可以做到这一点。