Xamarin Android 中的启动画面太慢

问题描述

我正在创建一个显示启动画面的应用程序，然后创建主要活动.我正在关注本教程，看起来很简单:

接着是(右)飞溅(取自模拟器，但只是为了说明我的观点):

所以我的猜测是，有时 Xamarin 加载应用程序需要很长时间，因此它会延迟显示启动画面.有什么办法可以防止吗?

更新 1我已经按照教程进行操作，但为此我取消了睡眠:

Insights.Initialize ("", Application.Context);StartActivity(typeof(MainActivity));

解决方案

该示例在 UI 线程上调用 Thread.Sleep(10000);... 这将锁定应用并生成ANR！

通过将睡眠作为后台然后触发下一个活动来修复它:

命名空间 SplashScreen{使用 System.Threading;使用 Android.App;使用Android.OS；[Activity(Theme = "@style/Theme.Splash", MainLauncher = true, NoHistory = true)]公共类 SplashActivity : 活动{protected override void OnCreate(Bundle bundle){base.OnCreate(捆绑)；Task.Run (() => {线程.睡眠(10000)；//模拟应用启动时的长时间加载过程.RunOnUiThread (() => {开始活动(typeof(Activity1))；});});}}}

I'm creating an app that shows a splash screen and then creates the main activity. I'm following this tutorial that seems pretty straight forward: https://developer.xamarin.com/guides/android/user_interface/creating_a_splash_screen/

After implementing that I can successfully see the splash but there are some times (1 out of 20) that with an S5 I see the following screen:

Followed by the (right) splash (taken from the Emulator but just to make my point):

So my guess would be that sometimes Xamarin is taking to long to load the app therefore it has a delay showing the splash. Is there any way to prevent that?

UPDATE 1I've followed the tutorial but I've removed the sleep for this:

Insights.Initialize ("<APP_KEY>", Application.Context);
StartActivity(typeof (MainActivity));

解决方案

The example invokes the Thread.Sleep(10000); on the UI thread... This will lock up the app and generate an ANR!

Fix it by backgrounding the sleep and then triggering the next activity:

namespace SplashScreen
{
    using System.Threading;

    using Android.App;
    using Android.OS;

    [Activity(Theme = "@style/Theme.Splash", MainLauncher = true, NoHistory = true)]
    public class SplashActivity : Activity
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            Task.Run (() => {
                Thread.Sleep (10000); // Simulate a long loading process on app startup.
                RunOnUiThread (() => {
                    StartActivity (typeof(Activity1));
                });
            });
        }
    }
}

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