This is a beginner level app and you can make app like this very easily
Screenshots:
https://play.google.com/store/apps/details?id=com.maktech.howtodraw
Of course i put ads on the app for earning money but as the interface was very basic so it doesn't attract much crowd but its very good for learning if you are beginner.
Layout_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">
<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">
<LinearLayout
android:id="@+id/banner_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
/>
<TextView
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="1.Draw Angel Fish in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton1"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="angelFish"
app:srcCompat="@drawable/angelfish" />
<TextView
android:id="@+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="2.Draw Angler Fish in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton2"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="anglerFish"
app:srcCompat="@drawable/anglerfish" />
<com.google.android.gms.ads.AdView
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="@+id/adView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
ads:adSize="BANNER"
ads:adUnitId="ca-app-pub-8494578888352473/8412491969">
</com.google.android.gms.ads.AdView>
<TextView
android:id="@+id/textView3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="3.Draw Ant in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton3"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="ant"
android:src="@drawable/ant" />
<TextView
android:id="@+id/textView4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="4.Draw AntEater in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton4"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="antEater"
android:src="@drawable/anteater" />
<TextView
android:id="@+id/textView5"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="5.Draw Armdillo in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton5"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="armdillo"
android:src="@drawable/armdillo" />
<TextView
android:id="@+id/textView6"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="6.Draw Baboon in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton6"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="baboon"
android:src="@drawable/baboon" />
<TextView
android:id="@+id/textView7"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="7.Draw Bat in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton7"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="bat"
android:src="@drawable/bat" />
<TextView
android:id="@+id/textView8"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="8.Draw Bear in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton8"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="bear"
android:src="@drawable/bhaalu" />
<TextView
android:id="@+id/textView9"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="9.Draw Beaver in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton9"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="beaver"
android:src="@drawable/beaver" />
<TextView
android:id="@+id/textView10"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="10.Draw Bee in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton10"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="bee"
android:src="@drawable/bee" />
<TextView
android:id="@+id/textView11"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="11.Draw Blue whale in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton11"
android:layout_width="match_parent"
android:layout_height="197dp"
android:onClick="blueWhale"
android:background="#FFFFFF"
android:src="@drawable/whale" />
<TextView
android:id="@+id/textView12"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="12.Draw buffalo in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton12"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="buffalo"
android:src="@drawable/buffalo" />
<TextView
android:id="@+id/textView13"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="13.Draw camel in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton13"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="camel"
android:src="@drawable/camel" />
<TextView
android:id="@+id/textView14"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="14.Draw Cat in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton14"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="cat"
android:src="@drawable/cat" />
<TextView
android:id="@+id/textView15"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="15.Draw chamelian in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton15"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="chameleon"
android:src="@drawable/chameleon" />
<TextView
android:id="@+id/textView16"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="16.Draw Cheetah in 7 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton16"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="cheetah"
android:src="@drawable/cheetah" />
<TextView
android:id="@+id/textView17"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="17.Draw chicken in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton17"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="chicken"
android:src="@drawable/chicken" />
<TextView
android:id="@+id/textView18"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="18.Draw Chimpanzee in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton18"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="chimpanzee"
android:src="@drawable/chimpanzee" />
<TextView
android:id="@+id/textView19"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="19.Draw Cobra in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton19"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="cobra"
android:src="@drawable/cobra" />
<TextView
android:id="@+id/textView20"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="20.Draw Cow in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton20"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="cow"
android:src="@drawable/cow" />
<TextView
android:id="@+id/textView21"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="21.Draw Crab in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton21"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="crab"
android:src="@drawable/crab" />
<TextView
android:id="@+id/textView22"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="22.Draw Crocodile in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton22"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="crocodile"
android:src="@drawable/crocodile" />
<TextView
android:id="@+id/textView23"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="23.Draw Dog in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton23"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="dog"
android:src="@drawable/dog" />
<TextView
android:id="@+id/textView24"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="24.Draw Dolphin in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton24"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="dolphin"
android:src="@drawable/dolphin" />
<TextView
android:id="@+id/textView25"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="25.Draw Donkey in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton25"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="donkey"
android:src="@drawable/donkey" />
<TextView
android:id="@+id/textView26"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="26.Draw Dragonfly in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton26"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="dragonfly"
android:src="@drawable/dragon_fly" />
<TextView
android:id="@+id/textView27"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="27.Draw Duck in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton27"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="duck"
android:src="@drawable/duck" />
<TextView
android:id="@+id/textView28"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="28.Draw Eagle in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton28"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="eagle"
android:src="@drawable/eagle" />
<TextView
android:id="@+id/textView29"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="29.Draw Elephant in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton29"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="elephant"
android:src="@drawable/elephant" />
<TextView
android:id="@+id/textView30"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="30.Draw Fish in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton30"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="fish"
android:src="@drawable/fish" />
<TextView
android:id="@+id/textView31"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="31.Draw Flamingo in 7 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton31"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="flamingo"
android:src="@drawable/flamingo" />
<TextView
android:id="@+id/textView32"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="32.Draw Fly in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton32"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="fly"
android:src="@drawable/fly" />
<TextView
android:id="@+id/textView33"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="33.Draw frog in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton33"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="frog"
android:src="@drawable/frog" />
<TextView
android:id="@+id/textView34"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="34.Draw giraffe in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton34"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="giraffe"
android:src="@drawable/giraffe" />
<TextView
android:id="@+id/textView35"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="35.Draw Goat in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton35"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="goat"
android:src="@drawable/goat" />
<TextView
android:id="@+id/textView36"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="36.Draw Goose in 7 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton36"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="goose"
android:src="@drawable/goose" />
<TextView
android:id="@+id/textView37"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="37.Draw Gorilla in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton37"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="gorilla"
android:src="@drawable/gorilla" />
<TextView
android:id="@+id/textView38"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="38.Draw Grasshopper in 9 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton38"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="grasshopper"
android:src="@drawable/grasshopper" />
<TextView
android:id="@+id/textView39"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="39.Draw Shark in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton39"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="shark"
android:src="@drawable/shark" />
<TextView
android:id="@+id/textView40"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="40.Draw Hippo in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton40"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="hippo"
android:src="@drawable/hippo" />
<TextView
android:id="@+id/textView41"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="41.Draw Horse in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton41"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="horse"
android:src="@drawable/horse" />
<TextView
android:id="@+id/textView42"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="42.Draw Hummingbird in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton42"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="hummingbird"
android:src="@drawable/hummingbird" />
<TextView
android:id="@+id/textView43"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="43.Draw Jellyfish in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton43"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="jellyfish"
android:src="@drawable/jellyfish" />
<TextView
android:id="@+id/textView44"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="44.Draw Kangaroo in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton44"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="kangaroo"
android:src="@drawable/kangaroo" />
<TextView
android:id="@+id/textView45"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="45.Draw Killer Whale in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton45"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="killerwhale"
android:src="@drawable/killerwhale" />
<TextView
android:id="@+id/textView46"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="46.Draw Koala Whale in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton46"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="koala"
android:src="@drawable/koala" />
<TextView
android:id="@+id/textView47"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="47.Draw Komodo Dragon in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton47"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="dragon"
android:src="@drawable/dragon" />
<TextView
android:id="@+id/textView48"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="48.Draw LadyBug in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton48"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="ladybug"
android:src="@drawable/ladybug" />
<TextView
android:id="@+id/textView49"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="49.Draw Lion in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton49"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="lion"
android:src="@drawable/lion" />
<TextView
android:id="@+id/textView50"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="50.Draw Lobster in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton50"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="lobster"
android:src="@drawable/lobster" />
<TextView
android:id="@+id/textView51"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="51.Draw Manta Ray in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton51"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="mantaray"
android:src="@drawable/mantaray" />
<TextView
android:id="@+id/textView52"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="52.Draw Mole in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton52"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="mole"
android:src="@drawable/mole" />
<TextView
android:id="@+id/textView53"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="53.Draw Monkey in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton53"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="monkey"
android:src="@drawable/monkey" />
<TextView
android:id="@+id/textView54"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="54.Draw Moose in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton54"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="moose"
android:src="@drawable/moose" />
<TextView
android:id="@+id/textView55"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="55.Draw Mountain Goat in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton55"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="mountaingoat"
android:src="@drawable/mountaingoat" />
<TextView
android:id="@+id/textView56"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="56.Draw Mouse in 7 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton56"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="mouse"
android:src="@drawable/mouse" />
<TextView
android:id="@+id/textView57"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="57.Draw Octopus in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton57"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="octopus"
android:src="@drawable/octopus" />
<TextView
android:id="@+id/textView58"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="58.Draw Penguin in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton58"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#000000"
android:onClick="penguin"
android:src="@drawable/penguin" />
<TextView
android:id="@+id/textView59"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="59.Draw Spider in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton59"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="spider"
android:src="@drawable/spider" />
<TextView
android:id="@+id/textView60"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="60.Draw Tiger in 6 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton60"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="tiger"
android:src="@drawable/tiger" />
<TextView
android:id="@+id/textView61"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0C0B0E"
android:text="61.Draw Wolf in 8 steps"
android:textColor="#F9F8FA"
android:textSize="20dp" />
<ImageButton
android:id="@+id/imageButton61"
android:layout_width="match_parent"
android:layout_height="197dp"
android:background="#FFFFFF"
android:onClick="wolf"
android:src="@drawable/wolf" />
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package com.maktech.howtodraw;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
import com.facebook.ads.AdSize;
import com.facebook.ads.AudienceNetworkAds;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import com.google.android.gms.ads.MobileAds;
import com.google.android.gms.ads.initialization.InitializationStatus;
import com.google.android.gms.ads.initialization.OnInitializationCompleteListener;
public class MainActivity extends AppCompatActivity {
private com.facebook.ads.AdView adView;
private AdView mAdView,madView1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MobileAds.initialize(this, new OnInitializationCompleteListener() {
@Override
public void onInitializationComplete(InitializationStatus initializationStatus) {
}
});
madView1=findViewById(R.id.adView1);
AdRequest adRequest1=new AdRequest.Builder().build();
madView1.loadAd((adRequest1));
//facebook ads
AudienceNetworkAds.initialize(this);
adView = new com.facebook.ads.AdView(this, "550981095851123_550983852517514", AdSize.BANNER_HEIGHT_50);
LinearLayout adContainer = (LinearLayout) findViewById(R.id.banner_container);
adContainer.addView(adView);
adView.loadAd();
}
protected void onDestroy() {
if (adView != null) {
adView.destroy();
}
super.onDestroy();
}
public void angelFish(View view){
Intent af=new Intent(this,AngelFishActivity.class);
startActivity(af);
}
public void anglerFish(View view){
Intent af=new Intent(this,AnglerFishActivity.class);
startActivity(af);
}
public void ant(View view){
Intent af=new Intent(this,AntActivity.class);
startActivity(af);
}
public void antEater(View view){
Intent ae=new Intent(this,AntEaterActivity.class);
startActivity(ae);
}
public void armdillo(View view){
Intent ad=new Intent(this,ArmdilloActivity.class);
startActivity(ad);
}
public void baboon(View view){
Intent b=new Intent(this,BaboonActivity.class);
startActivity(b);
}
public void bat(View view){
Intent a=new Intent(this,BatActivity.class);
startActivity(a);
}
public void bear(View view){
Intent a=new Intent(this,BearActivity.class);
startActivity(a);
}
public void beaver(View view){
Intent a=new Intent(this,BeaverActivity.class);
startActivity(a);
}
public void bee(View view){
Intent a=new Intent(this,BeeActivity.class);
startActivity(a);
}
public void blueWhale(View view){
Intent a=new Intent(this,BlueWhaleActivity.class);
startActivity(a);
}
public void buffalo(View view){
Intent a=new Intent(this,BuffaloActivity.class);
startActivity(a);
}
public void camel(View view){
Intent a=new Intent(this,CamelActivity.class);
startActivity(a);
}
public void cat(View view){
Intent a=new Intent(this,CatActivity.class);
startActivity(a);
}
public void chameleon(View view){
Intent a=new Intent(this,ChameleonActivity.class);
startActivity(a);
}
public void cheetah(View view){
Intent a=new Intent(this,CheetahActivity.class);
startActivity(a);
}
public void chicken(View view){
Intent a=new Intent(this,ChickenActivity.class);
startActivity(a);
}
public void chimpanzee(View view){
Intent a=new Intent(this,ChimpanzeeActivity.class);
startActivity(a);
}
public void cobra(View view){
Intent a=new Intent(this,CobraActivity.class);
startActivity(a);
}
public void cow(View view){
Intent a=new Intent(this,CowActivity.class);
startActivity(a);
}
public void crab(View view){
Intent a=new Intent(this,CrabActivity.class);
startActivity(a);
}public void crocodile(View view){
Intent a=new Intent(this,CrocodileActivity.class);
startActivity(a);
}
public void dog(View view){
Intent a=new Intent(this,DogActivity.class);
startActivity(a);
}
public void dolphin(View view){
Intent a=new Intent(this,DolphinActivity.class);
startActivity(a);
}public void donkey(View view){
Intent a=new Intent(this,DonkeyActivity.class);
startActivity(a);
}public void dragonfly(View view){
Intent a=new Intent(this,DragonFlyActivity.class);
startActivity(a);
}public void duck(View view){
Intent a=new Intent(this,DuckActivity.class);
startActivity(a);
}public void eagle(View view){
Intent a=new Intent(this,EagleActivity.class);
startActivity(a);
}public void elephant(View view){
Intent a=new Intent(this,ElephantActivity.class);
startActivity(a);
}public void fish(View view){
Intent a=new Intent(this,FishActivity.class);
startActivity(a);
}public void flamingo(View view){
Intent a=new Intent(this,FlamingoActivity.class);
startActivity(a);
}public void fly(View view){
Intent a=new Intent(this,FlyActivity.class);
startActivity(a);
}public void frog(View view){
Intent a=new Intent(this,FrogActivity.class);
startActivity(a);
}public void giraffe(View view){
Intent a=new Intent(this,GiraffeActivity.class);
startActivity(a);
}public void goat(View view){
Intent a=new Intent(this,GoatActivity.class);
startActivity(a);
}public void goose(View view){
Intent a=new Intent(this,GooseActivity.class);
startActivity(a);
}public void gorilla(View view){
Intent a=new Intent(this,GorillaActivity.class);
startActivity(a);
}public void grasshopper(View view){
Intent a=new Intent(this,GrassHopperActivity.class);
startActivity(a);
}
public void shark(View view){
Intent a=new Intent(this,SharkActivity.class);
startActivity(a);
}
public void hippo(View view){
Intent a=new Intent(this,HippoActivity.class);
startActivity(a);
}
public void horse(View view){
Intent a=new Intent(this,HorseActivity.class);
startActivity(a);
}
public void hummingbird(View view){
Intent a=new Intent(this,HummingBirdActivity.class);
startActivity(a);
}
public void jellyfish(View view){
Intent a=new Intent(this,JellyFishActivity.class);
startActivity(a);
}
public void kangaroo(View view){
Intent a=new Intent(this,KangarooActivity.class);
startActivity(a);
}
public void killerwhale(View view){
Intent a=new Intent(this,KillerWhaleActivity.class);
startActivity(a);
}
public void koala(View view){
Intent a=new Intent(this,KoalaActivity.class);
startActivity(a);
}
public void dragon(View view){
Intent a=new Intent(this,DragonActivity.class);
startActivity(a);
}
public void ladybug(View view){
Intent a=new Intent(this,LadyBugActivity.class);
startActivity(a);
}
public void lion(View view){
Intent a=new Intent(this,LionActivity.class);
startActivity(a);
}
public void lobster(View view){
Intent a=new Intent(this,LobsterActivity.class);
startActivity(a);
}
public void mantaray(View view){
Intent a=new Intent(this,MantarayActivity.class);
startActivity(a);
}
public void mole(View view){
Intent a=new Intent(this,MoleActivity.class);
startActivity(a);
}
public void monkey(View view){
Intent a=new Intent(this,MonkeyActivity.class);
startActivity(a);
}public void moose(View view){
Intent a=new Intent(this,MooseActivity.class);
startActivity(a);
}public void mountaingoat(View view){
Intent a=new Intent(this,MountainGoatActivity.class);
startActivity(a);
}
public void mouse(View view){
Intent a=new Intent(this,MouseActivity.class);
startActivity(a);
}
public void octopus(View view){
Intent a=new Intent(this,OctopusActivity.class);
startActivity(a);
}
public void penguin(View view){
Intent a=new Intent(this,PenguinActivity.class);
startActivity(a);
}
public void spider(View view){
Intent a=new Intent(this,SpiderActivity.class);
startActivity(a);
}
public void tiger(View view){
Intent a=new Intent(this,TigerActivity.class);
startActivity(a);
}
public void wolf(View view){
Intent a=new Intent(this,WolfActivity.class);
startActivity(a);
}
}
By looking at this you must understand whyit is not assume as good approach.
The app doesn't require any special permission.
Menisfest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.maktech.howtodraw">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name="com.maktech.howtodraw.WolfActivity"></activity>
<activity android:name="com.maktech.howtodraw.TigerActivity" />
<activity android:name="com.maktech.howtodraw.PenguinActivity" />
<activity android:name="com.maktech.howtodraw.SpiderActivity" />
<activity android:name="com.maktech.howtodraw.OctopusActivity" />
<activity android:name="com.maktech.howtodraw.MouseActivity" />
<activity android:name="com.maktech.howtodraw.MountainGoatActivity" />
<activity android:name="com.maktech.howtodraw.MooseActivity" />
<activity android:name="com.maktech.howtodraw.MonkeyActivity" />
<activity android:name="com.maktech.howtodraw.MoleActivity" />
<activity android:name="com.maktech.howtodraw.MantarayActivity" />
<activity android:name="com.maktech.howtodraw.LobsterActivity" />
<activity android:name="com.maktech.howtodraw.LionActivity" />
<activity android:name="com.maktech.howtodraw.DragonActivity" />
<activity android:name="com.maktech.howtodraw.LadyBugActivity" />
<activity android:name="com.maktech.howtodraw.KoalaActivity" />
<activity android:name="com.maktech.howtodraw.KangarooActivity" />
<activity android:name="com.maktech.howtodraw.KillerWhaleActivity" />
<activity android:name="com.maktech.howtodraw.JellyFishActivity" />
<activity android:name="com.maktech.howtodraw.HummingBirdActivity" />
<activity android:name="com.maktech.howtodraw.HorseActivity" />
<activity android:name="com.maktech.howtodraw.HippoActivity" />
<activity android:name="com.maktech.howtodraw.SharkActivity" />
<activity android:name="com.maktech.howtodraw.GrassHopperActivity" />
<activity android:name="com.maktech.howtodraw.GorillaActivity" />
<activity android:name="com.maktech.howtodraw.GoatActivity" />
<activity android:name="com.maktech.howtodraw.GooseActivity" />
<activity android:name="com.maktech.howtodraw.GiraffeActivity" />
<activity android:name="com.maktech.howtodraw.FrogActivity" />
<activity android:name="com.maktech.howtodraw.FlyActivity" />
<activity android:name="com.maktech.howtodraw.FlamingoActivity" />
<activity android:name="com.maktech.howtodraw.FishActivity" />
<activity android:name="com.maktech.howtodraw.ElephantActivity" />
<activity android:name="com.maktech.howtodraw.EagleActivity" />
<activity android:name="com.maktech.howtodraw.DuckActivity" />
<activity android:name="com.maktech.howtodraw.DragonFlyActivity" />
<activity android:name="com.maktech.howtodraw.DonkeyActivity" />
<activity android:name="com.maktech.howtodraw.DolphinActivity" />
<activity android:name="com.maktech.howtodraw.DogActivity" />
<activity android:name="com.maktech.howtodraw.CrocodileActivity" />
<activity android:name="com.maktech.howtodraw.CrabActivity" />
<activity android:name="com.maktech.howtodraw.CowActivity" />
<activity android:name="com.maktech.howtodraw.CobraActivity" />
<activity android:name="com.maktech.howtodraw.ChimpanzeeActivity" />
<activity android:name="com.maktech.howtodraw.ChickenActivity" />
<activity android:name="com.maktech.howtodraw.CheetahActivity" />
<activity android:name="com.maktech.howtodraw.ChameleonActivity" />
<activity android:name="com.maktech.howtodraw.CatActivity" />
<activity android:name="com.maktech.howtodraw.CamelActivity" />
<activity android:name="com.maktech.howtodraw.BuffaloActivity" />
<activity android:name="com.maktech.howtodraw.BlueWhaleActivity" />
<activity android:name="com.maktech.howtodraw.BeeActivity" />
<activity android:name="com.maktech.howtodraw.BeaverActivity" />
<activity android:name="com.maktech.howtodraw.BearActivity" />
<activity android:name="com.maktech.howtodraw.BatActivity" />
<activity android:name="com.maktech.howtodraw.BaboonActivity" />
<activity android:name="com.maktech.howtodraw.ArmdilloActivity" />
<activity android:name="com.maktech.howtodraw.AntEaterActivity" />
<activity android:name="com.maktech.howtodraw.AntActivity" />
<activity android:name="com.maktech.howtodraw.AnglerFishActivity" />
<activity android:name="com.maktech.howtodraw.AngelFishActivity" />
<activity android:name="com.maktech.howtodraw.MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-8494578888352473~9498057517"/>
</application>
</manifest>
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