How to change Default Display Alert background Color in Styles.Xml for Xamarin Forms

问题

I need to change Default Display Alert background Color in Styles.Xml for Xamarin Forms? Please Anyone help me? I don't want Any plugins or etc. I just need to Change default Display alert background Color

回答1:

                    <ActivityIndicator x:Name="activityIndicator" Margin="0,50,0,0" VerticalOptions="Center" HorizontalOptions="Center" Color="Black" WidthRequest="30" HeightRequest="30" ></ActivityIndicator>  
                    <Label x:Name="lblLoadingText" TextColor="Black" VerticalOptions="Center" HorizontalOptions="Center" VerticalTextAlignment="Center" Text="Loading..."></Label>  
                </StackLayout>  
            </StackLayout>  
        </ContentView>  

来源：https://stackoverflow.com/questions/60628892/how-to-change-default-display-alert-background-color-in-styles-xml-for-xamarin-f