I'm trying suggestion #2 from this question: Android display Splash-Screen while loading
This is using a theme with a background drawable then loading MainActivity from Splash.java which uses said theme to display an image while MainActivity processes and loads.
I'm getting a black screen for several seconds then the main screen appears on first load.
Am I missing something? Or is this working correctly? If it's working correctly, how do I get an image to show instead of the black screen if possible?
@drawable/background_splash
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- Fill the background with a solid color -->
    <item
        android:drawable="@color/colorPrimary"/>
    <item>
        <!-- Place your bitmap in the center -->
        <bitmap
            android:gravity="center"
            android:src="@mipmap/ic_launcher"/>
    </item>
</layer-list>
@styles
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>
<style name="AppTheme.NoActionBar">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
<!-- Splash Screen theme -->
<style name="SplashTheme">
    <item name="android:background">@drawable/background_splash</item>
    <item name="android:windowAnimationStyle">@null</item>
</style>
</resources>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.epicdecals.openslider">
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<application
    android:allowBackup="true"
    android:icon="@drawable/open_slider_icon"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".Splash"
        android:theme="@style/SplashTheme">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:theme="@style/AppTheme.NoActionBar">
    </activity>
</application>
</manifest>
Splash.java
public class Splash extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Intent intent = new Intent(this, MainActivity.class);
    startActivity(intent);
    finish();
}
}
 
                        
I had to add a parent in the style theme to get it working. Thank you for the link in the comments Redman ^^^^.
EX: