Ios 隐藏Xamarin中的后退按钮文本

我想在iOS上的Xamarin中隐藏后退按钮的文本，我尝试过：

<Style TargetType="NavigationPage">
<Setter Property="BackButtonTitle" Value="" />
</Style>

还要加上这个

NavigationPage.BackButtonTitle = ""

如前所述，在MasterDetailPage的Main.xaml中，可以使用空字符串作为后退按钮标题：

NavigationPage.SetBackButtonTitle(this, "");

或者您可以将

UIBarButtonItem

的标题设置为清晰

public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
  {
     // . . .
     var attribute = new UITextAttributes();
     attribute.TextColor = UIColor.Clear;
     UIBarButtonItem.Appearance.SetTitleTextAttributes(attribute, UIControlState.Normal);
     UIBarButtonItem.Appearance.SetTitleTextAttributes(attribute, UIControlState.Highlighted);
     //. . .

     return true;
  }

---

请参阅此帮助：“NavigationPage.SetHasBackButton（此，false）”隐藏整个按钮，“UIBarButtonItem.Appearance.SetBackButtonTitlePositionAdjustment”隐藏文本，但导航栏上的后退箭头会更改其位置。这不会将所有工具栏项设置为没有文本颜色？

NavigationPage.SetBackButtonTitle(this, "");

public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
  {
     // . . .
     var attribute = new UITextAttributes();
     attribute.TextColor = UIColor.Clear;
     UIBarButtonItem.Appearance.SetTitleTextAttributes(attribute, UIControlState.Normal);
     UIBarButtonItem.Appearance.SetTitleTextAttributes(attribute, UIControlState.Highlighted);
     //. . .

     return true;
  }