How can I get my QT application to run after android starts?

Question

Android

Good afternoon, I can not get the application written in QT to start after the launch of android.
Read this and similar articles. But I don’t understand how to embed java code, where to put the .java file, how to call my activity written in cpp from it, where to look at the error log. Please help, here are the pieces of code:
/android/AndroidManifest.xml

<?xml version="1.0"?>
<manifest package="inc.garage.ncf05m" xmlns:android="http://schemas.android.com/apk/res/android" android:versionName="0.1" android:versionCode="1" android:installLocation="auto">
    <application android:hardwareAccelerated="true" android:name="org.qtproject.qt5.android.bindings.QtApplication" android:label="-- %%INSERT_APP_NAME%% --" android:icon="@drawable/icon">
        <uses-permission android:name="android.permission.BOOT_COMPLETED" />

        <receiver android:enabled="true" android:name=".BootUpReceiver"
        android:permission="android.permission.BOOT_COMPLETED">

            <intent-filter>
                    <action android:name="android.intent.action.BOOT_COMPLETED" />
                    <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </receiver>
        <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation" android:name="org.qtproject.qt5.android.bindings.QtActivity" android:label="-- %%INSERT_APP_NAME%% --" android:screenOrientation="portrait" android:launchMode="singleTask">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
....

/android/BootUpReceiver.java

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class BootUpReceiver extends BroadcastReceiver{

        @Override
        public void onReceive(Context context, Intent intent) {
                Intent i = new Intent(context, MAIN.class);
                i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                context.startActivity(i);  
        }

}

Answer 1

After launching the android, the Launcher is launched. Your application should report that it is the Launcher, then when you press the home button, you can select it as the default launcher and it will always start immediately after loading.