Lecture 1

Slides:

• Introductory slide deck
• How to avoid writing Android apps
• Introduction to activities

Videos:

• Part 1
• Part 2

Code: See attachment for complete zip file.

The main portion of code we wrote is the following, for MainActivity.java:

package com.example.first_app_2014;

import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.view.View;

import android.widget.TextView;

public class MainActivity extends Activity {

private int count;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

count = 0;

}

@Override

protected void onResume() {

super.onResume();

// count = 0;

}

public void plusOne(View v) {

count += 1;

TextView w = (TextView) findViewById(R.id.textview1);

w.setText(Integer.toString(count));

}

@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;

}

}