滚动到布局底部

Question

我正在尝试滚动到布局底部。我有这段代码，但它不起作用

         ScrollView scrollView = view.FindViewById<ScrollView>(Resource.Id.scrollViewHelper);
         scrollView.FullScroll(FocusSearchDirection.Down);

Answer 1

一种简单的方法是创建一个基于 Action 的 runnable ，将 Action 作为参数传递给 runnable 。 您可以参考以下代码：

        scrollView = FindViewById<ScrollView>(Resource.Id.scrollView1);

        var runnable = new MyRunnable(async () =>
        {
            // Do whatever you need to do, including capturing of local vars, app/activity context, etc.
            await Task.Delay(500);
            scrollView.FullScroll(FocusSearchDirection.Down);
        });
        runnable.Run();

班级代码

MyRunnable

public class MyRunnable : Java.Lang.Object, Java.Lang.IRunnable
{
    readonly WeakReference<Action> actionRef;

    public MyRunnable(Action action)
    {
        actionRef = new WeakReference<Action>(action);
    }

    public void Run()
    {
        actionRef.TryGetTarget(out Action action);
        action?.Invoke();
    }
}

Answer 2

尝试一下，效果完全符合预期

await Task.Delay(500);
 scrollView1.FullScroll(FocusSearchDirection.Down);