如何在Xcode中以编程方式向导航栏添加按钮

Question

我正在尝试将按钮添加到导航栏中，我想不做任何操作就添加按钮，请问有什么帮助吗？

Answer 1

UIBarButtonItem *yourButton = [[UIBarButtonItem alloc] 
                               initWithTitle:@"Your Button"                                         
                               style:UIBarButtonItemStyleBordered 
                               target:self 
                               action:@selector(methodName:)];
self.navigationItem.rightBarButtonItem = yourButton;
[yourButton release];

然后方法

-(IBAction)methodName {
    // your code here
}

Answer 2

您应该将UIBarButtonItem而不是UIButton添加到导航栏。 为此，您可以这样称呼：

UIBarButtonItem *button = [[UIBarButtonItem alloc] 
                               initWithTitle:@"Title"                                            
                               style:UIBarButtonItemStyleBordered 
                               target:nil
                               action:nil];
self.navigationItem.rightBarButtonItem = button;

Answer 3

UIBarButtonItem *customBtn=[[UIBarButtonItem alloc] initWithTitle:@"Custom" style:UIBarButtonItemStylePlain target:self action:@selector(customBtnPressed)];
     [self.navigationItem setRightBarButtonItem:customBtn];

/////称为事件

-(IBAction)customBtnPressed:(id)sender
{
    //Your code here
}

Answer 4

如果确实需要UIButton，请尝试此操作。

    UIButton *btnSample = [[UIButton alloc] initWithFrame:btnFrame];
    btnSample.backgroundColor = [UIColor blueColor];

    UIBarButtonItem *barBtn_cart = [[UIBarButtonItem alloc] initWithCustomView:btnSample];

   self.navigationItem.rightBarButtonItem = btnSample;