simple calculator using android studio — Step 1 : Design layout xml two text view and 17 button below figure layout xml code or copy paste <?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:layout_marginLeft="15dp"
android:layout_marginTop="50dp"
android:focusableInTouchMode="false"
android:gravity="top|left"…
