ios - 更改 UINavigationBar 后退按钮的后退箭头位置

Question

是否可以在自定义 UINavigationBar 子类中调整后退按钮箭头的位置。这是必需的，因为在具有自定义调整高度的导航栏中位置错误。

Answer 1

我最终使用 imageWithAlignmentRectInsets 如下修复它:

 self.backIndicatorImage = UIImage(named: "back_detail")?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal).imageWithAlignmentRectInsets(UIEdgeInsetsMake(0, 0, -3, 0))
 self.backIndicatorTransitionMaskImage = UIImage(named: "back_detail")?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal).imageWithAlignmentRectInsets(UIEdgeInsetsMake(0, 0, -3, 0))

编辑

添加了更多解释以阐明实现:

class VDLNavigationBar: UINavigationBar {

    override func awakeFromNib() {
        // Back button
        self.backIndicatorImage = UIImage(named: "back_detail")?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal).imageWithAlignmentRectInsets(UIEdgeInsetsMake(0, 0, -3, 0))
        self.backIndicatorTransitionMaskImage = UIImage(named: "back_detail")?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal).imageWithAlignmentRectInsets(UIEdgeInsetsMake(0, 0, -3, 0))    
    }
}

在您的 UINavigationController 中使用这个自定义子类