我找到了解决方案。
在自定义渲染器中:
protected override void OnElementChanged(ElementChangedEventArgs<TabbedPage> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
_bottomNavigationView = (GetChildAt(0) as Android.Widget.RelativeLayout).GetChildAt(1) as BottomNavigationView;
_tabbedPage.PropertyChanged += Element_PropertyChanged;
ViewGroup vg = (ViewGroup)_bottomNavigationView.GetChildAt(0);
int tabsCount = vg.ChildCount;
for (int j = 0; j < tabsCount; j++)
{
ViewGroup vgTab = (ViewGroup)vg.GetChildAt(j);
int tabChildsCount = vgTab.ChildCount;
vgTab.SetBackgroundResource(App1.Droid.Resource.Drawable.hideRipple);
}
}
}
在drawable / hideRipple.xml中]
<?xml version="1.0" encoding="utf-8" ?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<color android:startColor="@android:color/transparent"/>
</shape>