add girdview to listview

Đây là code activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context=".MainActivity">

    <TextView
        android:text="Title1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textView"
        android:layout_marginTop="16dp"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
    <GridView
        android:id="@+id/idGVcourses"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:horizontalSpacing="6dp"
        android:numColumns="2"
        android:verticalSpacing="6dp"
        app:layout_constraintTop_toBottomOf="@id/textView"
        app:layout_constraintLeft_toLeftOf="parent"/>

</androidx.constraintlayout.widget.ConstraintLayout>

Các đoạn code còn lại em tham khảo tại đây nhé: https://www.geeksforgeeks.org/gridview-in-android-with-example/