Android Open Source - CoinFlipAndroidApp Coin Flip Activity

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Back to project page CoinFlipAndroidApp.

License

The source code is released under:

GNU General Public License

Java Source Code

package nathanyo.coinflip.coinflip_app;
//from  w w  w .j  a v  a 2s. c  om
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

import java.util.Calendar;
import java.util.Random;

public class CoinFlipActivity extends Activity {

    public static int numHeads = 0;
    public static int numTails = 0;

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

        TextView numHeadsTextView = (TextView) findViewById(R.id.num_heads);
        TextView numTailsTextView = (TextView) findViewById(R.id.num_tails);

        SharedPreferences preferences = getPreferences(MODE_PRIVATE);
        numHeads = preferences.getInt("heads", 0);
        numTails = preferences.getInt("tails", 0);

        numHeadsTextView.setText(String.valueOf(numHeads));
        numTailsTextView.setText(String.valueOf(numTails));

        Button flipButton = (Button) findViewById(R.id.flip_button);
        flipButton.setOnClickListener(flipButtonListener);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.coin_flip, 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.

        TextView numHeadsTextView = (TextView) findViewById(R.id.num_heads);
        TextView numTailsTextView = (TextView) findViewById(R.id.num_tails);

        int id = item.getItemId();
        if (id == R.id.action_settings) {
            numHeads = 0;
            numTails = 0;
            numHeadsTextView.setText(String.valueOf(numHeads));
            numTailsTextView.setText(String.valueOf(numTails));
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onPause(){
        super.onPause();

        SharedPreferences.Editor editor = getPreferences(MODE_PRIVATE).edit();
        editor.putInt("heads", numHeads);
        editor.putInt("tails", numTails);
        editor.commit();
    }

    private OnClickListener flipButtonListener = new OnClickListener() {
        @Override
        public void onClick(View view) {
            flipCoin();
        }
    };

    private void flipCoin(){
        Random coinFlipRandom = new Random();
        int coinFlipResult = coinFlipRandom.nextInt(2);
        Calendar currentDate = Calendar.getInstance();
        TextView resultTextView = (TextView) findViewById(R.id.coin_flip_result);
        TextView numHeadsTextView = (TextView) findViewById(R.id.num_heads);
        TextView numTailsTextView = (TextView) findViewById(R.id.num_tails);
        if (currentDate.DAY_OF_MONTH == 1 && currentDate.MONTH == currentDate.APRIL){
            resultTextView.setText(R.string.result_on_its_side);
        }else if(coinFlipResult == 0){
            resultTextView.setText(R.string.result_heads);
            numHeads++;
            numHeadsTextView.setText(String.valueOf(numHeads));
        }else {
            resultTextView.setText(R.string.result_tails);
            numTails++;
            numTailsTextView.setText(String.valueOf(numTails));
        }
    }
}

Java Source Code List

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