<entry key="app/src/main/res/layout/activity_dictionary.xml" value="0.2078125" />

        <entry key="app/src/main/res/layout/activity_license.xml" value="0.20677083333333332" />

        <entry key="app/src/main/res/layout/layout_license.xml" value="0.20677083333333332" />

        <entry key="app/src/main/res/layout/layout_license_description.xml" value="0.21927083333333333" />

        <entry key="app/src/main/res/layout/layout_license_name.xml" value="0.20677083333333332" />

        <entry key="app/src/main/res/menu/menu_main.xml" value="0.2078125" />

            android:name=".LicenseActivity"

            android:label="@string/title_activity_license"

            android:parentActivityName=".LicenseActivity"

            tools:ignore="UnusedAttribute">

            <meta-data

                android:name="android.support.PARENT_ACTIVITY"

                android:value=".MainActivity" />

        </activity>

        <activity

package eu.lepiller.nani;

import android.os.Bundle;

import android.widget.ExpandableListAdapter;

import android.widget.ExpandableListView;

import android.widget.ListView;

import androidx.annotation.Nullable;

import androidx.appcompat.app.AppCompatActivity;

import java.util.ArrayList;

import java.util.List;

public class LicenseActivity extends AppCompatActivity {

    ExpandableListAdapter adapter;

    public static class License {

        private final String name, description, license;

        private final List<License> subProjects;

        License(String name, String description, String license, List<License> subProjects) {

            this.name = name;

            this.description = description;

            this.license = license;

            this.subProjects = subProjects;

        }

        public String getName() {

            return name;

        }

        public String getDescription() {

            return description;

        }

        public String getLicense() {

            return license;

        }

        @Nullable

        public List<License> getSubProjects() {

            return subProjects;

        }

    }

    private static final List<License> licenseInformation = new ArrayList<>();

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_license);

        licenseInformation.clear();

        List<License> erdrgLicenses = new ArrayList<>();

        erdrgLicenses.add(new License(getString(R.string.jmdict_title), getString(R.string.jmdict_descr), getString(R.string.jmdict_license), null));

        erdrgLicenses.add(new License(getString(R.string.radk_title), getString(R.string.radk_descr), getString(R.string.radk_license), null));

        erdrgLicenses.add(new License(getString(R.string.kanjidic_title), getString(R.string.kanjidic_descr), getString(R.string.kanjidic_license), null));

        licenseInformation.add(

                new License(getString(R.string.erdrg_title), getString(R.string.erdrg_descr), "",

                        erdrgLicenses));

        licenseInformation.add(

                new License(getString(R.string.kanjivg_title), getString(R.string.kanjivg_descr), getString(R.string.kanjivg_license), null)

        );

        licenseInformation.add(

                new License(getString(R.string.jibiki_title), getString(R.string.jibiki_descr), getString(R.string.jibiki_license), null)

        );

        licenseInformation.add(

                new License(getString(R.string.wadoku_title), getString(R.string.wadoku_descr), getString(R.string.wadoku_license), null)

        );

        licenseInformation.add(

                new License(getString(R.string.tatoeba_title), getString(R.string.tatoeba_descr), getString(R.string.tatoeba_license), null)

        );

        final ExpandableListView list_view = findViewById(R.id.license_view);

        adapter = new LicenseAdapter(this, licenseInformation);

        list_view.setAdapter(adapter);

    }

}

package eu.lepiller.nani;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseExpandableListAdapter;

import android.widget.TextView;

import java.util.List;

public class LicenseAdapter extends BaseExpandableListAdapter {

    Context context;

    List<LicenseActivity.License> licenses;

    LicenseAdapter(Context context, List<LicenseActivity.License> licenses) {

        this.licenses = licenses;

        this.context = context;

    }

    @Override

    public int getGroupCount() {

        return licenses.size();

    }

    @Override

    public int getChildrenCount(int i) {

        List<LicenseActivity.License> projects = licenses.get(i).getSubProjects();

        if(projects == null || projects.size() == 0)

            return 1;

        return projects.size() + 1;

    }

    @Override

    public Object getGroup(int i) {

        return null;

    }

    @Override

    public Object getChild(int i, int i1) {

        return null;

    }

    @Override

    public long getGroupId(int i) {

        return 0;

    }

    @Override

    public long getChildId(int i, int i1) {

        return 0;

    }

    @Override

    public boolean hasStableIds() {

        return false;

    }

    @Override

    public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {

        if (view == null) {

            LayoutInflater layoutInflater = (LayoutInflater) this.context.

                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            view = layoutInflater.inflate(R.layout.layout_license_name, viewGroup, false);

        }

        String name = licenses.get(i).getName();

        TextView nameView = (TextView) view.findViewById(R.id.license_name);

        nameView.setText(name);

        return view;

    }

    @Override

    public View getChildView(int i, int i1, boolean b, View view, ViewGroup viewGroup) {

        List<LicenseActivity.License> projects = licenses.get(i).getSubProjects();

        if(projects != null && projects.size() > 0)

            i1 -= 1;

        if(i1 < 0) {

            if(view == null) {

                LayoutInflater layoutInflater = (LayoutInflater) this.context.

                        getSystemService(Context.LAYOUT_INFLATER_SERVICE);

                view = layoutInflater.inflate(R.layout.layout_license, viewGroup, false);

            }

            TextView nameView = (TextView) view.findViewById(R.id.name);

            TextView descriptionView = (TextView) view.findViewById(R.id.description);

            TextView licenseView = (TextView) view.findViewById(R.id.license);

            descriptionView.setText(licenses.get(i).getDescription());

            nameView.setVisibility(View.GONE);

            licenseView.setVisibility(View.GONE);

            return view;

        } else {

            boolean subproject = projects != null && projects.size() > 0;

            LicenseActivity.License license = subproject? projects.get(i1): licenses.get(i);

            if(view == null || i1 == 0) {

                LayoutInflater layoutInflater = (LayoutInflater) this.context.

                        getSystemService(Context.LAYOUT_INFLATER_SERVICE);

                view = layoutInflater.inflate(R.layout.layout_license, viewGroup, false);

            }

            TextView nameView = (TextView) view.findViewById(R.id.name);

            TextView descriptionView = (TextView) view.findViewById(R.id.description);

            TextView licenseView = (TextView) view.findViewById(R.id.license);

            nameView.setVisibility(subproject? View.VISIBLE: View.GONE);

            licenseView.setVisibility(View.VISIBLE);

            nameView.setText(license.getName());

            descriptionView.setText(license.getDescription());

            licenseView.setText(license.getLicense());

            return view;

        }

    }

    @Override

    public boolean isChildSelectable(int i, int i1) {

        return false;

    }

}

        } else if (id == R.id.action_licenses) {

            Intent intent = new Intent(this, LicenseActivity.class);

            startActivity(intent);

            return true;

            android:text="@string/title_activity_about"

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".AboutActivity">

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center"

        android:text="@string/data_licenses"

        android:textColor="@color/colorTitle"

        android:textSize="@dimen/title_size" />

    <ExpandableListView

        android:id="@+id/license_view"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginStart="8dp"

        android:layout_marginLeft="8dp"

        android:layout_marginTop="32dp"

        android:layout_marginEnd="8dp"

        android:layout_marginRight="8dp"

        android:layout_marginBottom="8dp" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    android:orientation="vertical">

    <TextView

        android:id="@+id/name"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="16dp"

        android:textColor="@color/colorAccent"

        android:textSize="@dimen/subtitle_size"

        app:lineHeight="22dp" />

    <TextView

        android:id="@+id/description"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="16dp"

        app:lineHeight="22dp" />

    <TextView

        android:id="@+id/license"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="16dp"

        app:lineHeight="22dp" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical">

    <TextView

        android:id="@+id/license_name"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="16dp"

        android:textColor="@color/colorSubtitle"

        android:textSize="@dimen/title_size"/>

</LinearLayout>

    <item

        android:id="@+id/action_licenses"

        android:title="@string/action_licenses" />

    <color name="colorSubtitle">#6484ed</color>

    <string name="action_licenses">Licenses</string>

    <string name="title_activity_license">About licenses</string>