iphone - 如何在 iphone 应用程序中将导航控制器的后退按钮与其左角对齐

Question

我已经通过向其添加图像来定制我的导航控制器后退按钮，但我仍然无法将后退按钮返回到导航栏的左角。我想避免导航栏的左边距和后退按钮之间的间隙或空间。谢谢您的帮助。

Answer 1

这是您可以使用的代码

 UIButton* backButton= [UIButton buttonWithType:UIButtonTypeCustom];
//here in below you just need to pass the point where you want to place your button.

正如你所说，你需要space between navigation bar's left margin and the back button.

[backButton setFrame:CGRectMake(xOrigin, yOrigin, width, height)];
[backButton setImage:[UIImage imageNamed:@"imageName.png"] forState:UIControlStateNormal];
UIBarButtonItem * leftBarButton =[[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.leftBarButtonItem= leftBarButton;

我希望它可以帮助你。