设置非活动选项卡染色颜色

对于底部文本 :

// This will change the text's color when the item is unselected
var attributes = new UITextAttributes();   
attributes.TextColor = UIColor.Red;
TabBarItem.SetTitleTextAttributes(attributes, UIControlState.Normal);

var selectedAttributes = new UITextAttributes();
selectedAttributes.TextColor = UIColor.White;
TabBarItem.SetTitleTextAttributes(selectedAttributes, UIControlState.Selected);

对于图标 :

// This will let the icon show the image's original color(instead of the gray) when the item is unselected
TabBarItem.Image = UIImage.FromBundle("imageName").ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal);

选择项目时,也可以使用相同的方法设置图像:

TabBarItem.SelectedImage = UIImage.FromBundle("imageName").ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal);

或者只是使用 TabBar.TintColor = UIColor.White; .