Android Studio

View group is a container but view is only an object. We can contain views inside view group but not vice-versa.

Go to setting of phone. Choose about phone. Go to software information tab and click it. Click on build number tab 7-8 time. Developer mode will be enable. Go to…

A. MainActivity.java package com.example.myfirstandroidapp; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } } onCreate function is loading during open…