AndroidでQt Quick を使用してスプラッシュスクリーンを実装する

Window {
    id: splash
    color: "#2CDE85"
    title: qsTr("Splash Window")
    modality: Qt.ApplicationModal
    flags: Qt.SplashScreen
    visible: true

    property int timeoutInterval: 2000
    signal timeout

    Loader {
        id: mainLoader
        source: "Main.qml"

    function exit() {
        mainLoader.item.show();
        splash.visible = false
        splash.timeout()
    }

    Timer {
        interval: splash.timeoutInterval;
        running: splash.visible;
        repeat: false
        onTriggered: {
            splash.exit()
        }
    }

<?xml version="1.0" encoding="UTF-8"?>
<resources>
    <style name="splashStartTheme">
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowDisablePreview">true</item>
        <item name="android:windowIsTranslucent">true</item>
    </style>
</resources>

        <activity
            android:name=".SplashActivity"
            android:exported="true"
            android:label="QML Splash Screen Example"
            android:theme="@style/splashStartTheme">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

package io.qt.qmlsplashscreeninandroid;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.util.Log;
import android.content.Intent;
import android.view.ViewTreeObserver;
import org.qtproject.qt.android.bindings.QtActivity;

public class SplashActivity extends Activity {

    private static final String TAG = "SplashActivity";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // Set up an OnPreDrawListener to the root view.
        final View content = findViewById(android.R.id.content);
                content.getViewTreeObserver().addOnPreDrawListener(
                        new ViewTreeObserver.OnPreDrawListener() {
            @Override
            public boolean onPreDraw() {
                Intent i = new Intent(SplashActivity.this, QtActivity.class);
                i.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                startActivity(i);

                content.getViewTreeObserver().removeOnPreDrawListener(this);
                finish();
                return true;
            }
        });
    }
}