如何自定義導航欄後退按鈕

Question

當我做導航默認其添加後退按鈕導航欄。

我們可以自定義後退按鈕嗎？

如果是如何做到這一點？

讓我添加圖片

@thanks提前。

Answer 1

您可以通過搜索堆棧溢出，谷歌或蘋果的文檔很容易發現這一點，這是幾乎可以肯定是一個傻瓜，但無論如何：

UIBarButtonItem *btn = [[UIBarButtonItem alloc] initWithTitle:@"Custom" style:UIBarButtonItemStyleBordered target:self action:@selector(someSelector)];  
self.navigationItem.leftBarButtonItem = btn; 
[btn release]; 

Answer 2

讓IBOutlet中，你的導航欄的合成，也連接參考從筆尖，並嘗試下面的代碼。

- (void)viewDidLoad { 
UIBarButtonItem * backButton = [[UIBarButtonItem alloc]initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:self action:@selector(backView)]; 
//navBar is your Navigation Bar 
navBar.topItem.leftBarButtonItem = backButton; 
} 
-(IBAction) backView 
{ 
    [self.navigationController popViewControllerAnimated:YES]; 
} 

Answer 3

You can hide back bar button and can create a custom button. 

    self.navigationItem.hidesBackButton=YES; 
    UIButton *back = [[UIButton alloc] initWithFrame:CGRectMake(15, 7, 49, 29)]; 
    [back setImage:[UIImage imageNamed:@"back.png"] forState:UIControlStateNormal]; 
    [back addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside]; 
    UIBarButtonItem *back1 = [[UIBarButtonItem alloc] initWithCustomView:back]; 
    self.navigationItem.leftBarButtonItem = back1;