我的闪屏结束得太早了.如何在Android上手动隐藏启动屏幕

Question

我为我的Android游戏创建了一个启动屏幕主题。但问题是，我的启动屏幕在OnCreate(捆绑包(完全执行后自动结束，这导致Draw(GameTime-GameTime(执行前出现黑屏。我在draw(GameTimegameTime(中绘制游戏的精灵。因此，在执行Draw(GameTimegameTime(之前，会出现一个黑屏。

当我的游戏代码已经达到Draw(GameTimegameTime(时，是否可以手动结束启动屏幕？我不希望在完全执行OnCreate(Bundle Bundle(时启动屏幕已经结束。

splash_screen_svg.xml:

<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="320dp"
android:height="480dp"
android:viewportWidth="84.666664"
android:viewportHeight="127">
<path
android:pathData="M0.529,0.529h83.608v125.942h-83.608z"
android:strokeWidth="1.05833"
android:fillColor="#00ffff"
android:strokeColor="#000000"/>
<path
android:pathData="M21.431,32.015h41.804v62.971h-41.804z"
android:strokeWidth="0.529167"
android:fillColor="#ff0000"
android:strokeColor="#000000"/>
</vector>

colors.xml:

<?xml version="1.0" encoding="UTF-8" ?>
<resources>
<color name="splash_background">#eff1f7</color>
</resources>

Strings.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">splashapp</string>
</resources>

styles.xml:

<?xml version="1.0" encoding="UTF-8" ?>
<resources>
<style name="MainTheme" parent="MainTheme.Base">
</style>
<!-- Base theme applied no matter what API -->
<style name="MainTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">
<!--If you are using revision 22.1 please use just windowNoTitle. Without android:-->
<item name="android:windowNoTitle">true</item>
<!--We will be using the toolbar so no need to show ActionBar-->
<item name="android:windowActionBar">false</item>
<item name="android:windowFullscreen">true</item>
<!-- Set theme colors from http://www.google.com/design/spec/style/color.html#color-color-palette -->
<!-- colorPrimary is used for the default action bar background -->
<item name="android:colorPrimary">#2196F3</item>
<!-- colorPrimaryDark is used for the status bar -->
<item name="android:colorPrimaryDark">#1976D2</item>
<!-- colorAccent is used as the default value for colorControlActivated
which is used to tint widgets -->
<item name="android:colorAccent">#FF4081</item>
<!-- You can also set colorControlNormal, colorControlActivated
colorControlHighlight and colorSwitchThumbNormal. -->
<item name="android:windowActionModeOverlay">true</item>
<item name="android:windowIsTranslucent">true</item>
</style>
<style name="SplashTheme" parent ="Theme.AppCompat.Light.NoActionBar">
<item name="android:windowBackground">@drawable/splash_screen_svg</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowActionBar">false</item>
<item name="android:windowFullscreen">true</item>
<item name="android:windowContentOverlay">@null</item>
</style>
</resources>

活动1.cs:

namespace splashapp
{
[Activity(
Label = "@string/app_name",
MainLauncher = true,
Theme = "@style/SplashTheme",
Icon = "@drawable/icon",
AlwaysRetainTaskState = true,
LaunchMode = LaunchMode.SingleInstance,
ScreenOrientation = ScreenOrientation.FullUser,
ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.Keyboard | ConfigChanges.KeyboardHidden | ConfigChanges.ScreenSize
)]
public class Activity1 : AndroidGameActivity
{
private Game1 _game;
private View _view;
protected override void OnCreate(Bundle bundle)
{
base.SetTheme(Resource.Style.MainTheme);
base.OnCreate(bundle);
_game = new Game1();
_view = _game.Services.GetService(typeof(View)) as View;
SetContentView(_view);
_game.Run();
}
}
}

Game1.cs:

namespace splashapp
{
public class Game1 : Game
{
private GraphicsDeviceManager _graphics;
private SpriteBatch _spriteBatch;
public Game1()
{
_graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
}
protected override void Initialize()
{
base.Initialize();
}
protected override void LoadContent()
{
_spriteBatch = new SpriteBatch(GraphicsDevice);

// TODO: use this.Content to load your game content here
}
protected override void Update(GameTime gameTime)
{
// TODO: Add your update logic here
base.Update(gameTime);
}
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.CornflowerBlue);
// TODO: Add your drawing code here
base.Draw(gameTime);
}
}
}

我的解决方案图片

Answer 1

是否可以使用我的splash_screen_svg.xml或svg文件？

在drawable文件夹中创建splash_screen.xml。

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<color android:color="@color/splash_background"/>
</item>
<item>
<bitmap
android:src="@drawable/splash_logo"
android:tileMode="disabled"
android:gravity="center"/>
</item>
</layer-list>

在Resources/values/colors.xml.中添加特定颜色

<?xml version="1.0" encoding="utf-8"?>
<resources>
...
<color name="splash_background">#FFFFFF</color>
</resources>

在Resources/values/styles.xml 中创建主题

<style name="Theme_SplashScreen" parent ="Theme.AppCompat.Light.NoActionBar">
<item name="android:windowBackground">@drawable/splash_screen</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
<item name="android:windowContentOverlay">@null</item>
<item name="android:windowActionBar">true</item>

在Activity_SplashScreen活动中加载启动屏幕。

[Activity(Label = "Activity_SplashScreen", Theme = "@style/Theme_SplashScreen", MainLauncher = true)]
public class Activity_SplashScreen : Activity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your application here
}
protected override void OnResume()
{
base.OnResume();
Task startupWork = new Task(() => { SimulateStartup(); });
startupWork.Start();
}
// Simulates background work that happens behind the splash screen
async void SimulateStartup()
{             
await Task.Delay(3000); // Simulate a bit of startup work.            
StartActivity(new Intent(Application.Context, typeof(Activity_Screen)));
}
}

活动_屏幕活动：

[Activity(Label = "Activity_Screen")]
public class Activity_Screen : Activity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your application here
SetContentView(Resource.Layout.layout_Screen);
Toast.MakeText(this, "Welcome to MainActivity", ToastLength.Long).Show();
}
}