UINavigationBar中的多个UIBarButtonItem

Question

如何在导航栏中创建多个栏按钮？

Answer 1

从iOS 5开始，您现在可以使用setLeftBarButtonItems:animated:或setRightBarButtonItems:animated:

进行此操作

Answer 2

您必须使用UIToolbar并使用按钮设置工具栏：

// create a toolbar where we can place some buttons
UIToolbar *toolbar = [[UIToolbar alloc]
                        initWithFrame:CGRectMake(0, 0, 100, 45)];
[toolbar setBarStyle: UIBarStyleBlackOpaque];

// create an array for the buttons
NSMutableArray *buttons = [[NSMutableArray alloc] initWithCapacity:3];

// create a standard save button
UIBarButtonItem *saveButton = [[UIBarButtonItem alloc]
    initWithBarButtonSystemItem:UIBarButtonSystemItemSave
    target:self
    action:@selector(saveAction:)];
saveButton.style = UIBarButtonItemStyleBordered;
[buttons addObject:saveButton];

// create a spacer between the buttons
UIBarButtonItem *spacer = [[UIBarButtonItem alloc]
    initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
    target:nil
    action:nil];
[buttons addObject:spacer];

// create a standard delete button with the trash icon
UIBarButtonItem *deleteButton = [[UIBarButtonItem alloc]
    initWithBarButtonSystemItem:UIBarButtonSystemItemTrash
    target:self
    action:@selector(deleteAction:)];
deleteButton.style = UIBarButtonItemStyleBordered;
[buttons addObject:deleteButton];

// put the buttons in the toolbar and release them
[toolbar setItems:buttons animated:NO];

// place the toolbar into the navigation bar
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]
                                           initWithCustomView:toolbar];

Answer 3

    you have to create a view with as much button you required and have to add them on navigation button like following :

    UIView *parentView1 = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 60, 44)];
        UIButton *infoButton1 = [[UIButton alloc] initWithFrame:CGRectMake(0, 6, 30, 32)];
        [infoButton1 setBackgroundImage:[UIImage imageNamed: @"navbtn.png"] forState:UIControlStateNormal];
        [infoButton1 setTitle:@"Back" forState:UIControlStateNormal];
        infoButton1.titleLabel.font = [UIFont systemFontOfSize:13.0f];
        infoButton1.titleLabel.textColor = [UIColor whiteColor];
        [infoButton1 addTarget:self action:@selector(backBarButtonClicked) forControlEvents:UIControlEventTouchUpInside];
        [parentView1 addSubview:infoButton1];
        [infoButton1 release];

UIButton *infoButton2 = [[UIButton alloc] initWithFrame:CGRectMake(30, 6, 30, 32)];
        [infoButton2 setBackgroundImage:[UIImage imageNamed: @"navbtn.png"] forState:UIControlStateNormal];
        [infoButton2 setTitle:@"Back" forState:UIControlStateNormal];
        infoButton2.titleLabel.font = [UIFont systemFontOfSize:13.0f];
        infoButton2.titleLabel.textColor = [UIColor whiteColor];
        [infoButton2 addTarget:self action:@selector(backBarButtonClicked) forControlEvents:UIControlEventTouchUpInside];
        [parentView1 addSubview:infoButton2];
        [infoButton2 release];
        UIBarButtonItem *customBarButtomItem1 = [[UIBarButtonItem alloc] initWithCustomView:parentView1];
        [parentView1 release];
        self.navigationItem.leftBarButtonItem = customBarButtomItem1;
        [customBarButtomItem1 release];`enter code here`

Answer 4

我知道这个问题已经关闭，但我发现UIToolbar解决方案在视觉上不匹配。

如果您使用标题为nil的UINavigationBar的第二个UINavigationItem集以及所需的按钮，则可以添加更多按钮并使用与原始视觉匹配的条形图。

Answer 5

对于iOS7及更高版本，这是正确的方法。不需要UIToolbar愚蠢。

getSelectedIndex()

我讨厌将链接作为答案放在SO上，因为它们可以随时死亡，所以我添加了从HERE

获取的相关代码

Answer 6

- (void)viewWillAppear
{

    // get a view and :
    [self.navigationController.navigationBar addSubView:yourView];

}