Code from the VideoMainActivity.javapackage com.newthinktank.helloagain.app;

import android.os.Bundle;import android.support.v7.app.ActionBarActivity;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.TextView;

public class MainActivity extends ActionBarActivity {

// onCreate is executed when the activity is created @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Sets the file activity_main.xml as the user interface setContentView(R.layout.activity_main);

// To be able to edit the TextView with our code we have to create it and // bind it to a TextView object. I need to use final because it will be // used in the inner class below final TextView firstTextView = (TextView) findViewById(R.id.textView);

// I set up the Button just like I did the TextView Button firstButton = (Button) findViewById(R.id.firstButton);

// This is how you make the Button change the text in the TextView when it is clicked firstButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) {

firstTextView.setText("You Clicked");

} }); }

@Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }

@Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); }}activity_main.xml

dimens.xml

16dp 16dp

strings.xml

HelloAgain Hello Again Settings You Clicked

AndroidManifest.xml