我对 .net maui 和 c# 总体来说是个新手，我正在尝试编写一个文字游戏，我遇到的问题是在我的主页上使用数据绑定时出现了一些问题：
主页是程序运行时您可以访问的唯一页面，就像应用程序实际上被锁定在其上一样 我必须离开页面的按钮不再起作用，它就在那里 我必须从 github 的长列表中获取随机单词的功能不再触发。我正在使用社区工具包，我应该拥有所有正确的东西才能正常工作
如有任何帮助，我们将不胜感激。
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="Wordle.MainPage"
xmlns:viewmodel="clr-namespace:Wordle.ViewModel"
xmlns:models="clr-namespace:Wordle.Models"
x:DataType="viewmodel:WordleViewModel"
Title="Welcome to Wordle">
<ScrollView>
<VerticalStackLayout
Spacing="30"
Padding="20"
VerticalOptions="Center">
<!--Content of our main page-->
<Image Source="gametitle.png"
HeightRequest="150"/>
<Grid RowDefinitions="*, Auto">
<VerticalStackLayout BindableLayout.ItemsSource="{Binding CurrentRow}">
<BindableLayout.ItemTemplate>
<DataTemplate x:DataType="models:GameRows">
<HorizontalStackLayout BindableLayout.ItemsSource="{Binding CorrectLetters}"
HorizontalOptions="Center">
<BindableLayout.ItemTemplate>
<DataTemplate x:DataType="models:Letters">
<Button Style="{DynamicResource LettersColor}"
Text="Test"
BackgroundColor="{Binding bgCol}"/>
</DataTemplate>
</BindableLayout.ItemTemplate>
</HorizontalStackLayout>
</DataTemplate>
</BindableLayout.ItemTemplate>
</VerticalStackLayout>
</Grid>
<Button x:Name="signInbtn" Text="?" Clicked="signIn"
WidthRequest="100" BackgroundColor="Gray" TextColor="White"/>
</VerticalStackLayout>
</ScrollView>
</ContentPage>
using System;
using System.Collections.ObjectModel;
using System.Net.Http;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using Microsoft.Maui.Storage;
using Wordle.ViewModel;
namespace Wordle
{
public partial class MainPage : ContentPage
{
//Declaring Variables
private Random rand;
private List<string> gameWords;
private HttpClient http;
private string userGuess;
private string correctWord;
private int gamesPlayed;
private int numWords;
public string userName;
private string password;
public string targetFile;
public bool isBusy;
public MainPage(WordleViewModel newView)
{
InitializeComponent();
BindingContext = newView;
gameWords = new List<string>();
rand = new Random();
numWords = gameWords.Count;
Task task = getGameWords();
DisplayAlert("Test", correctWord, "Okay");
}
public MainPage()
{
InitializeComponent();
BindingContext = new WordleViewModel();
gameWords = new List<string>();
rand = new Random();
numWords = gameWords.Count;
Task task = getGameWords();
DisplayAlert("Test", correctWord, "Okay");
}
public async Task getGameWords()
{
targetFile = System.IO.Path.Combine(FileSystem.Current.AppDataDirectory, "words.txt");
if (!File.Exists(targetFile))
{
http = new HttpClient();
var response = await http.GetAsync("https://raw.githubusercontent.com/DonH-ITS/jsonfiles/main/words.txt");
if (response.IsSuccessStatusCode)
{
string contents = await response.Content.ReadAsStringAsync();
using (StreamWriter writer = new StreamWriter(targetFile))
{
writer.Write(contents);
}
using (StreamReader s = new StreamReader(targetFile))
{
string line = "";
while ((line = s.ReadLine()) != null)
{
gameWords.Add(line);
Console.WriteLine(line);
numWords++;
}
}
getRandWord();
}
}
else
{
using (StreamReader s = new StreamReader(targetFile))
{
string line = "";
while ((line = s.ReadLine()) != null)
{
gameWords.Add(line);
Console.WriteLine(line);
numWords++;
}
}
getRandWord();
}
}
public void getRandWord()
{
rand = new Random();
correctWord = gameWords[rand.Next(gameWords.Count)];
}
private void signIn(object sender, EventArgs e)
{
Navigation.PushAsync(new SignIn());
}
}
}
//This is the viewModel im using
using CommunityToolkit.Mvvm.ComponentModel;
using Wordle.Models;
using CommunityToolkit.Mvvm.Input;
namespace Wordle.ViewModel
{
public partial class WordleViewModel: ObservableObject
{
//Declaring Variables
[ObservableProperty]
public GameRows[] currentRow;
private int currentRowIndex;
private int currentColumnIndex;
char[] answer;
char[] userGuess;
//Constructor to initialize some of the aspects of the ViewModel
public WordleViewModel()
{
currentRow = new GameRows[6]
{
new GameRows(),
new GameRows(),
new GameRows(),
new GameRows(),
new GameRows(),
new GameRows()
};
//Testing storing the correct answer
answer = "tests".ToCharArray();
}
//Getting the user to the next time every time they hit enter
//[ICommand]
public void nextLine()
{
//Controlling when to move the user to the next row
var isValid = true;
if(isValid)
{
if(currentColumnIndex != 5)
{
return;
}
if(currentRowIndex == 5)
{
}
else
{
currentRowIndex++;
currentColumnIndex = 0;
}
}
}
//[ICommand]
public void userEntry()
{
if(currentColumnIndex == 5)
{
return;
}
}
}
}
//This is the model im using
using CommunityToolkit.Mvvm.ComponentModel;
namespace Wordle.Models
{
public class GameRows
{
//Declaring Variables
int currentRow;
int currentCol;
char[] answer;
char[] userGuess;
//Constructor to initialize some of the variables of the Model class
public GameRows()
{
CorrectLetters = new Letters[5]
{
new Letters(),
new Letters(),
new Letters(),
new Letters(),
new Letters(),
};
}
//Correct Letters
public Letters[] CorrectLetters { get; set; }
public void ValidateAnswer(char[] correctWord)
{
}
}
public partial class Letters : ObservableObject
{
[ObservableProperty]
private char userInput;
[ObservableProperty]
private Color colorChange;
public char CorrectLetter { get; set; }
public Color bgCol { get; set; }
}
}
我发现你的
App.xaml.csWelcomePageMainPageWelcomePage由于您在项目中使用了 Shell 架构，因此您可以尝试在 App.xaml.cs 文件中将
AppShellMainpagepublic partial class App : Application
{
public App()
{
InitializeComponent();
MainPage = new AppShell();
}
}