android - Xamarin Forms android标签页自定义渲染器不同颜色

Question

我正在尝试为最后一个选项卡创建一个CustomRenderer具有Android TabbedPage不同颜色的 for。

但是，以下代码无法正常工作。我怎样才能解决这个问题？

protected override void OnVisibilityChanged(Android.Views.View changedView, [GeneratedEnum] ViewStates visibility)
        {
            base.OnVisibilityChanged(changedView, visibility);

            if(visibility == ViewStates.Visible)
            {
                var tabs = changedView.FindViewById<TabLayout>(Resource.Id.sliding_tabs);

                ViewGroup vg = (ViewGroup)tabs.GetChildAt(0);
                ViewGroup vgTab = (ViewGroup)vg.GetChildAt(vg.ChildCount - 1);

                for (int i = 0; i < vgTab.ChildCount; i++)
                {
                    Android.Views.View tabViewChild = vgTab.GetChildAt(i);

                    if(tabViewChild is Android.Widget.ImageView)
                    {
                        (tabViewChild as Android.Widget.ImageView).SetBackgroundColor(Android.Graphics.Color.Red);
                    }
                }
            }
        }

Answer 1

所以，解决方案非常简单

ViewGroup vg = (ViewGroup)_tabs.GetChildAt(0);
ViewGroup vgTab = (ViewGroup)vg.GetChildAt(vg.ChildCount - 1);

vgTab.SetBackgroundColor(Android.Graphics.Color.ParseColor("#E91E63"));