屏幕显示被下推xamarin.forms android [英] Display of screen is pushed down xamarin.forms android

问题描述

奇怪的是，我的屏幕显示仅在MainPage上被按下，然后显示才适合屏幕.我尝试删除该页面并重新添加它，但这也不起作用.有谁知道这可能是什么原因以及如何解决?

Weirdly my display of screen is pushed down for only the MainPage thereafter display fits the screen as it should. I've tried deleting the page and re-adding it but that didn't work either. Does anyone know what could be causing this and how to fix it?

外观如下:顶部的黑色空间不应存在

MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage
    x:Class="LoyaltyWorx.Views.MainPage"
    xmlns="http://xamarin.com/schemas/2014/forms"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:local="clr-namespace:LoyaltyWorx.Views.Converters"
    xmlns:prism="clr-namespace:Prism.Mvvm;assembly=Prism.Forms"
    prism:ViewModelLocator.AutowireViewModel="True"
    >
    <ContentPage.Resources>
        <ResourceDictionary>
            <local:InvertBooleanConverter x:Key="InvertBooleanConverter" />
        </ResourceDictionary>
    </ContentPage.Resources>
    <Grid>
        <Image Source="bk3.jpg" Aspect="AspectFill"/>
        <StackLayout VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
        <StackLayout Orientation="Horizontal" VerticalOptions="Start">
            <!-- top controls -->
        </StackLayout>
        <StackLayout VerticalOptions="CenterAndExpand">
            <!-- middle controls -->
            <BoxView HeightRequest="430"></BoxView>
            <Button Text="Continue with Facebook" x:Name="LoginBtn" BackgroundColor="#4867aa" TextColor="White" FontFamily="Klavika" HorizontalOptions="CenterAndExpand" Clicked="LoginBtn_Clicked" />
            <Button Text="Continue with Google  " Command="{Binding GoogleLoginCommand}" BackgroundColor="#d34836" TextColor="White" FontFamily="Klavika" HorizontalOptions="CenterAndExpand"/>
        </StackLayout>
        <StackLayout Orientation="Horizontal" VerticalOptions="End" HorizontalOptions="Center">
            <!-- bottom controls -->
            <Frame OutlineColor="White" HorizontalOptions="StartAndExpand">
                <StackLayout Orientation="Horizontal" VerticalOptions="End" HorizontalOptions="Center">
                    <!-- bottom controls -->
                    <StackLayout Grid.Row="1" Orientation="Horizontal" Spacing="0">
                        <Label  
                               Text="Terms and conditions"
                              FontSize="13"
                            TextColor="#71757a"
                            FontAttributes="Bold"
                            x:Name="LblTerms"/>
                        <Label  
                            Text=" and"
                            FontSize="13"
                            TextColor="#71757a"
                            />

                        <Label  
                               Text=" privacy policy"
                            FontSize="13"
                            TextColor="#71757a"
                            FontAttributes="Bold"
                            x:Name="LblPrivacy"/>
                    </StackLayout>

                </StackLayout>
            </Frame>
        </StackLayout>
    </StackLayout>
    </Grid>
</ContentPage>

App.cs

public partial class App : PrismApplication
    {

        public App(IPlatformInitializer initializer = null) : base(initializer) { }


        protected override void OnInitialized()
        { 
            InitializeComponent();
            SetMainPage();
            NavigationService.NavigateAsync("NavigationPage/MainPage?title=Hello%20from%20Xamarin.Forms");
        }

        protected override void RegisterTypes()
        {
            Container.RegisterTypeForNavigation<NavigationPage>();
            Container.RegisterTypeForNavigation<MainPage>();
        }

        private void SetMainPage()
        {
            if (!string.IsNullOrEmpty(Helpers.Settings.Usertoken))
            {
                Application.Current.MainPage = (new Profile());
            }
            else
            {
                MainPage = new NavigationPage(new MainPage())
                { BarBackgroundColor = Color.FromHex("#393b3d") };

            }
        }

        public async static Task NavigateToSMS()
        {
            await Application.Current.MainPage.Navigation.PushAsync(new SMS());
        }

        public static void NavigateToProfile()
        {
            Application.Current.MainPage = (new InvalidLogin());
        }
        public static void NavigateToVerified()
        {
            Application.Current.MainPage = (new Profile());
        }

        protected override void OnStart()
        {
            // Handle when your app starts
        }

        protected override void OnSleep()
        {
            // Handle when your app sleeps
        }

        protected override void OnResume()
        {
            // Handle when your app resumes
        }
    }

推荐答案

您将MainPage包裹在NavigationPage中，默认情况下会显示NavigationBar.您可以在CS代码或MainPage.xaml

You have your MainPage wrapped in a NavigationPage that by default shows the NavigationBar. You can turn it off in your cs code or in your MainPage.xaml

cs

var mainPage = new MainPage();
MainPage = new NavigationPage(mainPage);
NavigationPage.SetHasNavigationBar(mainPage, false);

xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage
    x:Class="LoyaltyWorx.Views.MainPage"
    xmlns="http://xamarin.com/schemas/2014/forms"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:local="clr-namespace:LoyaltyWorx.Views.Converters"
    xmlns:prism="clr-namespace:Prism.Mvvm;assembly=Prism.Forms"
    prism:ViewModelLocator.AutowireViewModel="True"
    NavigationPage.HasNavigationBar="False">

这篇关于屏幕显示被下推xamarin.forms android的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！