扭曲的导航栏自定义后退按钮

Question

我有一个自定义后退按钮和按钮显示不为意，它被拉伸，即使后退按钮文本为空，它仍然显示“回“ 文字。

在此先感谢。

Answer 1

我通常使用这种技术，使其工作：

1. 为了摆脱默认标题：

   [[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(-400.f, 0) forBarMetrics:UIBarMetricsDefault]; 
   

2. 使用可调整大小的图像：

   UIImage *backButton = [UIImage imageNamed:@"back.png"];   
   [[UIBarButtonItem appearance] setBackButtonBackgroundImage:[backButton resizableImageWithCapInsets:UIEdgeInsetsMake(0, backButton.size.width, 0, 0)] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault]; 
   

Answer 2

尝试像

UIButton *back = [UIButton buttonWithType:UIButtonTypeCustom]; 
UIImage *image = ... your image 
[back setBackgroundImage:image forState:UIControlStateNormal]; 
[back addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside]; 
back.frame = CGRectMake(0, 0, image.size.width, image.size.height); 
UIBarButtonItem *backbi = [[UIBarButtonItem alloc] initWithCustomView:back]; 
self.navigationItem.leftBarButtonItem = backbi; 

或发布您的代码。