Question

我正在尝试使用以下代码（简化）在Xamarin Android中每秒刷新一次TextView（按钮点击后）：

void OnClick_Start(object sender, EventArgs ea)
    {
        RunOnUiThread(() =>
        {
            txtTest.Text = "Starting";
            Thread.Sleep(1000);
            txtTest.Text = "1000";
            Thread.Sleep(1000);
            txtTest.Text = "2000";
            Thread.Sleep(1000);
            txtTest.Text = "3000";
            Thread.Sleep(1000);
            txtTest.Text = "4000";
        });
    }

但是我只在4秒后显示最后一个值“4000”，而不是中间值。

我还使用了以下代码，结果相同

void OnClick_Start(object sender, EventArgs ea)
    {
        new Thread(new ThreadStart(() =>
        {
            RunOnUiThread(() =>
            {
                txtTest.Text = "Starting";
                Thread.Sleep(1000);
                txtTest.Text = "1000";
                Thread.Sleep(1000);
                txtTest.Text = "2000";
                Thread.Sleep(1000);
                txtTest.Text = "3000";
                Thread.Sleep(1000);
                txtTest.Text = "4000";
            });
        })).Start();
    }

如何获得我想要的结果？

Answer 1

你可以在其他线程上等待一秒钟 - 非UI。

例如：

UMAT

如何在Xamarin Android中每秒更改一次TextView

1 个答案: