public class MainActivity extends Activity implements OnClickListener {

        private TextView display;
        private Button ok;
        public EditText et;

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            ok = (Button) findViewById(R.id.button1);
            ok.setOnClickListener(this);
            display = (TextView) findViewById(R.id.textView1);
            et = (EditText) findViewById(R.id.etNumbers);
            display.setText("Random Number:" + random()); // Show the random number

        }

        // ************RANDOM******************************
        public static int random() {
            Random generator = new Random();

            int x = generator.nextInt(100);
            return x;
        }

        // ************************************************

        public void onClick(View v) {
            // TODO Auto-generated method stub

            int random = random();
            int numberEntered = -1;
            try {
                numberEntered = Integer.parseInt(et.getText().toString());
            } catch (NumberFormatException nfe) {
                Toast.makeText(et.getContext(), "That's not a number!",
                        Toast.LENGTH_LONG).show();
            }
            if (random == numberEntered) {
                Toast.makeText(et.getContext(), "Great!", Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(et.getContext(), "Bad!", Toast.LENGTH_LONG).show();
            }

        }

}