没有自定义渲染器，有没有办法以Xamarin形式实现Toast消息

问题描述

到目前为止，我一直在使用dependency service在toast messages中显示Xamarin.Forms。

现在，我正在寻找一种无需使用toast message和Xamarin Cross platform就可以仅在Custom renderer中开发dependency service的方法。

有人可以建议我吗

解决方法

您可以尝试ACR用户对话框块插件。

https://github.com/aritchie/userdialogs

我正在所有项目中使用它！

简单示例

Acr.UserDialogs.ToastConfig.DefaultPosition = ToastPosition.Top;

Acr.UserDialogs.UserDialogs.Instance.InfoToast("Toast at the top");

,

我认为新的https://github.com/xamarin/XamarinCommunityToolkit

<?xml version="1.0" encoding="UTF-8"?>
<pages:BasePage xmlns="http://xamarin.com/schemas/2014/forms"
                xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                xmlns:pages="clr-namespace:Xamarin.CommunityToolkit.Sample.Pages"
                x:Class="Xamarin.CommunityToolkit.Sample.Pages.Views.SnackBarPage">
    <StackLayout Spacing="10" Margin="20">
        <Button Clicked="DisplaySnackBarClicked" Text="Show SnackBar"></Button>
        <Button Clicked="DisplayToastClicked" Text="Show toast"></Button>
        <Button Clicked="DisplaySnackBarAdvancedClicked" Text="Show SnackBar"></Button>
        <Label x:Name="StatusText"></Label>
    </StackLayout>
</pages:BasePage>




using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using System.Threading.Tasks;
using Xamarin.CommunityToolkit.Extensions;
using Xamarin.CommunityToolkit.UI.Views.Options;
using Xamarin.Forms;

namespace Xamarin.CommunityToolkit.Sample.Pages.Views
{
    public partial class SnackBarPage : BasePage
    {
        public SnackBarPage() => InitializeComponent();

        async void DisplaySnackBarClicked(object sender,EventArgs args)
        {
            var result = await this.DisplaySnackBarAsync(GenerateLongText(5),"Run action",() =>
            {
                Debug.WriteLine("SnackBar action button clicked");
                return Task.CompletedTask;
            });
            StatusText.Text = result ? "SnackBar is closed by user" : "SnackBar is closed by timeout";
        }

        async void DisplayToastClicked(object sender,EventArgs args)
        {
            var result = await this.DisplayToastAsync(GenerateLongText(5));
            StatusText.Text = result ? "SnackBar is closed by user" : "SnackBar is closed by timeout";
        }

        async void DisplaySnackBarAdvancedClicked(object sender,EventArgs args)
        {
            var messageOptions = new MessageOptions
            {
                Foreground = Color.DeepSkyBlue,FontSize = 40,FontFamily = "Sans-serif",Message = GenerateLongText(5)
            };

            var actionOptions = new List<SnackBarActionOptions>
            {
                new SnackBarActionOptions
                {
                    ForegroundColor = Color.Red,BackgroundColor = Color.Green,Text = "Action1",Action = () =>
                    {
                        Debug.WriteLine("1");
                        return Task.CompletedTask;
                    }
                },new SnackBarActionOptions
                {
                    ForegroundColor = Color.Green,BackgroundColor = Color.Red,FontSize = 20,Text = "Action2",Action = () =>
                    {
                        Debug.WriteLine("2");
                        return Task.CompletedTask;
                    }
                }
            };
            var options = new SnackBarOptions(messageOptions,5000,Color.Coral,true,actionOptions);
            var result = await this.DisplaySnackBarAsync(options);
            StatusText.Text = result ? "SnackBar is closed by user" : "SnackBar is closed by timeout";
        }

        string GenerateLongText(int stringDuplicationTimes)
        {
            const string message = "It is a very long message to test multiple strings. A B C D E F G H I I J K LO P Q R S T U V W X Y Z";
            var result = new StringBuilder();
            for (var i = 0; i < stringDuplicationTimes; i++)
            {
                result.AppendLine(message);
            }

            return result.ToString();
        }
    }
}