以编程方式将按钮添加到导航栏

Question

您好，我需要以编程方式在导航栏中的右侧设置按钮，这样如果我按下按钮，我将执行一些操作。我已经以编程方式创建了导航栏；

navBar=[[UINavigationBar alloc]initWithFrame:CGRectMake(0,0,320,44) ];

同样，我需要在该导航栏的右侧添加按钮。对于我使用的，

1。  

    UIView* container = [[UIView alloc] init];

    // create a button and add it to the container
    UIButton* button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 130, 44.01)];
    [container addSubview:button];
    [button release];

    // add another button
    button = [[UIButton alloc] initWithFrame:CGRectMake(160, 0, 50, 44.01)];
    [container addSubview:button];
    [button release];

    // now create a Bar button item
    UIBarButtonItem* item = [[UIBarButtonItem alloc] initWithCustomView:container];

    // set the nav bar's right button item
    self.navigationItem.rightBarButtonItem = item;
    [item release];

2.  

    UIImage *im;
    im=[UIImage imageNamed:@"back.png"];
    [button setImage:im forState:UIControlStateNormal];
    [im release];
    backButton = [[UIBarButtonItem alloc] initWithCustomView:button];       
    [backButton setImageInsets:UIEdgeInsetsMake(0, -10,5, 5)];
    [self.navigationItem setRightBarButtonItem:backButton];

3.  

    UIBarButtonItem *refreshItem = [[UIBarButtonItem alloc] initWithTitle:@"button"               style:UIBarButtonItemStylePlain target:self action:@selector(refreshLogsAction:)];
    self.navigationItem.rightBarButtonItem = refreshItem;

    [refreshItem release];

我尝试了所有这些方法，但没有一个在右侧显示按钮。

Answer 1

在我的 UIViewController 派生类中，我在 viewDidLoad 中使用以下内容：

UIBarButtonItem *flipButton = [[UIBarButtonItem alloc] 
                               initWithTitle:@"Flip"                                            
                               style:UIBarButtonItemStyleBordered 
                               target:self 
                               action:@selector(flipView:)];
self.navigationItem.rightBarButtonItem = flipButton;
[flipButton release];

这将在右侧添加一个标题为 Flip 的按钮，该按钮调用以下方法：

-(IBAction)flipView

这看起来很像你的#3，但它在我的代码中工作。

Answer 2

UIImage* image3 = [UIImage imageNamed:@"back_button.png"];
CGRect frameimg = CGRectMake(15,5, 25,25);

UIButton *someButton = [[UIButton alloc] initWithFrame:frameimg];
[someButton setBackgroundImage:image3 forState:UIControlStateNormal];
[someButton addTarget:self action:@selector(Back_btn:)
     forControlEvents:UIControlEventTouchUpInside];
[someButton setShowsTouchWhenHighlighted:YES];

UIBarButtonItem *mailbutton =[[UIBarButtonItem alloc] initWithCustomView:someButton];
self.navigationItem.leftBarButtonItem =mailbutton;
[someButton release];

///// 调用事件

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

SWIFT:

var image3 = UIImage(named: "back_button.png")
var frameimg = CGRect(x: 15, y: 5, width: 25, height: 25)

var someButton = UIButton(frame: frameimg)
someButton.setBackgroundImage(image3, for: .normal)
someButton.addTarget(self, action: Selector("Back_btn:"), for: .touchUpInside)
someButton.showsTouchWhenHighlighted = true

var mailbutton = UIBarButtonItem(customView: someButton)
navigationItem?.leftBarButtonItem = mailbutton

func back_btn(_ sender: Any) {
    //Your code here
}

Answer 3

要在导航栏上添加搜索按钮，请使用此代码：

 UIBarButtonItem *searchButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:@selector(toggleSearch:)];
self.navigationController.navigationBar.topItem.rightBarButtonItem = searchButton;

并实现以下方法：

- (IBAction)toggleSearch:(id)sender
{
    // do something or handle Search Button Action.
}

Answer 4

如何在 swift:

self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .Add, target: self, action: "onAdd:")

onAdd 中向导航栏添加添加按钮：

func onAdd(sender: AnyObject) {
}

Answer 5

self.navigationItem.rightBarButtonItem=[[[UIBarButtonItem alloc]initWithTitle:@"Save" style:UIBarButtonItemStylePlain target:self action:@selector(saveAction:)]autorelease];

-(void)saveAction:(UIBarButtonItem *)sender{

//perform your action

}

Answer 6

Swift 版本，将其添加到 viewDidLoad 中：

var doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Plain, target: self, action: "doneButton:")
navigationItem.rightBarButtonItem = doneButton

并将其添加到您的 View Controller 类中

func doneButton(sender: UIBarButtonItem) {
    println(111)
}

Answer 7

使用以下代码：

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

Answer 8

像这样简单地使用本机 editBarButton

self.navigationItem.rightBarButtonItem = self.editButtonItem;
[self.navigationItem.rightBarButtonItem setAction:@selector(editBarBtnPressed)];

然后

- (void)editBarBtnPressed {
    if ([infoTable isEditing]) {
        [self.editButtonItem setTitle:@"Edit"];
        [infoTable setEditing:NO animated:YES];
    }
    else {
        [self.editButtonItem setTitle:@"Done"];
        [infoTable setEditing:YES animated:YES];
    }
}

玩得开心......！！！

Answer 9

在ViewController.m的ViewDidLoad方法中

UIBarButtonItem *cancel = [[UIBarButtonItem alloc] initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(back)];

[self.navigationItem setLeftBarButtonItem:cancel];

“(back)” 选择器是一个关闭当前ViewController的方法

Answer 10

试试这个，对我有用。
以编程方式将按钮添加到导航栏，我们还将图像设置为导航栏按钮，

下面是代码：-

  UIBarButtonItem *Savebtn=[[UIBarButtonItem alloc]initWithImage:
  [[UIImage imageNamed:@"bt_save.png"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] 
  style:UIBarButtonItemStylePlain target:self action:@selector(SaveButtonClicked)];
  self.navigationItem.rightBarButtonItem=Savebtn;

  -(void)SaveButtonClicked
  {
    // Add save button code.
  }

Answer 11

如果您不是在寻找 BarButtonItem 而是在导航栏上寻找简单的按钮，那么下面的代码可以工作：

UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
[aButton setBackgroundImage:[UIImage imageNamed:@"NavBar.png"] forState:UIControlStateNormal];
[aButton addTarget:self
            action:@selector(showButtonView:)
  forControlEvents:UIControlEventTouchUpInside];
aButton.frame = CGRectMake(260.0, 10.0, 30.0, 30.0);
[self.navigationController.navigationBar addSubview:aButton];

Answer 12

大家好！！我创建了针对当前问题的解决方案，其中使用 UIIMagePicker 需要两个 UIInterface 方向。在我的 ViewController 中，我处理 UIImagePickerController 的转场

**我使用 a..

-(void) editButtonPressed:(id)sender {
   BOOL editPressed = YES;
    NSUserDefaults *boolDefaults = [NSUserDefaults standardUserDefaults];
    [boolDefaults setBool:editPressed forKey:@"boolKey"];
    [boolDefaults synchronize];

    [self performSegueWithIdentifier:@"photoSegue" sender:nil]; 

}

**

然后在 AppDelegate 类中执行以下操作。

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {

    BOOL appDelBool;
    NSUserDefaults *boolDefaults = [NSUserDefaults standardUserDefaults];
    appDelBool = [boolDefaults boolForKey:@"boolKey"];

       if (appDelBool == YES)
           return (UIInterfaceOrientationMaskPortrait);
        else
            return UIInterfaceOrientationMaskLandscapeLeft;
}