如何更改導航欄上後退按鈕的圖像？

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在故事板中，我使用「嵌入」創建導航欄。如何更改導航欄上後退按鈕的圖像？

我試圖取代後退按鈕的原始圖像，這就是這個樣子

enter image description here

我的後退按鈕的形象，這是

enter image description here

怎麼辦這個？

來源

2013-11-01 Zheng

在你的控制器的viewDidLoad方法中添加以下代碼..

UIImage *leftbuttonImage = [UIImage imageNamed:@"yourimagename"]; 
     UIButton *leftbutton = [UIButton buttonWithType:UIButtonTypeCustom]; 
     [leftbutton setImage:leftbuttonImage forState:UIControlStateNormal]; 
     leftbutton.frame = CGRectMake(0, 0, 35, 35); 
     [leftbutton addTarget:self action:@selector(showLeftMenuPressed:) forControlEvents:UIControlEventTouchUpInside]; 
     UIBarButtonItem *customBarleftItem = [[UIBarButtonItem alloc] initWithCustomView:leftbutton]; 

     self.navigationItem.leftBarButtonItem = customBarleftItem;

來源

2013-11-01 12:04:52

你好，謝謝你的回覆。在「[leftbutton addTarget：self action：@selector（showLeftMenuPressed :) forControlEvents：UIControlEventTouchUpInside];」中，xcode表示showLeftMenuPressed未聲明。我怎樣才能擺脫它？ – Zheng

對不起，沒有提及..取代showLeftMenuPressed：方法由你想要調用返回按鈕單擊您的方法。 –

請注意，如果您替換後退按鈕，則在iOS 7中返回的滑動手勢將停止工作。一些解決方案在這裏：http://stackoverflow.com/questions/19054625/changing-back-button-in-ios-7-disables-swipe-to-navigate-back –

UIButton *backBtn = [UIButton buttonWithType:UIButtonTypeCustom]; 
UIImage *backBtnImage = [UIImage imageNamed:@"BackBtn.png"] ; 
[backBtn setBackgroundImage:backBtnImage forState:UIControlStateNormal]; 
[backBtn addTarget:self action:@selector(goback) forControlEvents:UIControlEventTouchUpInside]; 
backBtn.frame = CGRectMake(0, 0, 54, 30); 
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithCustomView:backBtn] ; 
self.navigationItem.leftBarButtonItem = backButton;

，並宣佈GoBack的：

- (void)goback 
{ 
    [self.navigationController popViewControllerAnimated:YES]; 
}

來源

2013-11-01 12:16:31

-(void)setUpNAvigationBackBarButton 
{ 

    UIImage* image3 = [UIImage imageNamed:@"icon_back.png"]; 
    CGRect frameimg = CGRectMake(0, 0, image3.size.width, image3.size.height); 
    UIButton *someButton = [[UIButton alloc] initWithFrame:frameimg]; 
    [someButton setBackgroundImage:image3 forState:UIControlStateNormal]; 
    [someButton addTarget:self action:@selector(YourMethod which you wanna call on back button 
     forControlEvents:UIControlEventTouchUpInside]; 


    UIBarButtonItem *mailbutton =[[UIBarButtonItem alloc] initWithCustomView:someButton]; 
    [self.navigationItem setLeftBarButtonItem:mailbutton animated:YES]; 
}

只是調用這個函數在您的viewDidLoad中。我在ma代碼中使用了相同的這個函數。工作很好..你可以使用它。

來源

2013-11-01 12:16:53

斯威夫特版本： -

self.navigationController?.navigationBar.backIndicatorImage = UIImage(named: "[email protected]") 
self.navigationController?.navigationBar.backIndicatorTransitionMaskImage = UIImage(named: "[email protected]") 
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)

把這個viewDidLoad中（）

來源

2015-10-19 09:11:08

如何更改導航欄上後退按鈕的圖像？

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