我正在尝试找出我的 C# Xamarin Android 代码中的错误。这个应用程序应该做的很简单 - 连接到 REST API,将内容下载为字符串以供进一步分析。起初我的错误是不包括异步任务并使用 voids 代替,但是当我更改它们时,代码似乎卡在检索数据的点上。String content;private void OnClick1(object sender, EventArgs e){ output.Text = ""; GetJSONTextFromWeb("https://ameobea.me/osutrack/api/get_changes.php?user=XXXXXX&mode=0", "XXXXXX", "0"); while (content==null) { DoNothing(); } output.Text = content;}private async Task GetJSONTextFromWeb(String address, String user, String modeID) { URL url = new URL(address); URLConnection conn = url.OpenConnection(); //conn.AddRequestProperty("user", user); those lines are //conn.AddRequestProperty("mode", modeID); removed for investigation. //conn.Connect(); //this one caused the same issue. content = (String)conn.Content; //Here the code seems to freeze without any warning. }private void DoNothing(){ //literally. Made to await for the result.}有谁知道可能的原因?
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