MainActivity.java

package github.nisrulz.collapsibletoolbar;

import android.os.Bundle;
import android.support.design.widget.CollapsingToolbarLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    Toolbar toolbar;
    CollapsingToolbarLayout collapsingToolbarLayout;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        collapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar_layout);
        collapsingToolbarLayout.setTitle("Animated Toolbar");

        TextView textv_1 = (TextView) findViewById(R.id.textv_1);
        textv_1.setText(getResources().getString(R.string.dummytext));

    }
}