activity_main.xml

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

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/intro"
        android:src="@drawable/icon">

    </ImageView>

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:layout_marginStart="0dp"
                android:layout_marginTop="20dp"
                android:layout_marginBottom="10dp"
                android:text="PUYA DAILY"
                android:textSize="30dp" />

            <ImageButton
                android:id="@+id/wise"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"


                android:adjustViewBounds="true"

                android:onClick="wiseManPuya"
                android:scaleType="fitCenter"
                android:src="@drawable/thumb" />

            <ImageButton
                android:id="@+id/song"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"


                android:adjustViewBounds="true"

                android:onClick="SongPuya"
                android:scaleType="fitCenter"
                android:src="@drawable/thumb2" />

            <ImageButton
                android:id="@+id/quiz"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:adjustViewBounds="true"
                android:onClick="quizFunc"
                android:scaleType="fitCenter"
                android:src="@drawable/thumb3" />

            <ImageButton
                android:id="@+id/mix"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"


                android:adjustViewBounds="true"

                android:onClick="mixYt"
                android:scaleType="fitCenter"
                android:src="@drawable/thumb4" />

        </LinearLayout>
    </ScrollView>


</RelativeLayout>