package com.tistory.firewallgogo.ex52collapsingtoolbarlayout; import androidx.appcompat.app.AppCompatActivity; import androidx.appcompat.widget.Toolbar; import android.os.Bundle; public class MainActivity extends AppCompatActivity { Toolbar toolbar; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); toolbar =..
