Android Open Source - GeoQuiz Quiz Activity

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License

The source code is released under:

Apache License

Java Source Code

package geoquiz.android.bignerdranch.com.geoquiz;
//from  ww  w .j  a  v  a 2 s . c o m
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;


public class QuizActivity extends ActionBarActivity {

    private Button mTrueButton;
    private Button mFalseButton;
    private Button mNextButton;
    private TextView mQuestionTextView;

    private TrueFalse[] mQuestionBank = new TrueFalse[] {
            new TrueFalse(R.string.question_oceans,   true),
            new TrueFalse(R.string.question_mideast,  false),
            new TrueFalse(R.string.question_africa,   false),
            new TrueFalse(R.string.question_americas, true),
            new TrueFalse(R.string.question_asia,     true),
    };

    private int mCurrentIndex = 0;


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

        /*
        * Question Text View
        */
        mQuestionTextView = (TextView)findViewById(R.id.question_text_view);
        updateQuestion();

        /*
        * True Button
        */
        mTrueButton  = (Button)findViewById(R.id.true_button);
        mTrueButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                checkAnswer(true);
            }
        });

        /*
        * False Button
        */
        mFalseButton = (Button)findViewById(R.id.false_button);
        mFalseButton.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                checkAnswer(false);
            }
        });

        /*
        * Next Button
        */
        mNextButton = (Button)findViewById(R.id.next_button);
        mNextButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mCurrentIndex = (mCurrentIndex + 1)% mQuestionBank.length;
                updateQuestion();
            }
        });

    }


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

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    /*
    * Private methods
    */
    private void updateQuestion() {
        int question = mQuestionBank[mCurrentIndex].getQuestion();
        mQuestionTextView.setText(question);
    }

    private void checkAnswer(boolean userPressedTrue){
        boolean answerIsTrue = mQuestionBank[mCurrentIndex].isTrueQuestion();
        int messageResId = 0;

        if(userPressedTrue == answerIsTrue){
            messageResId = R.string.correct_toast;
        }else{
            messageResId = R.string.incorrect_toast;
        }

        Toast.makeText(QuizActivity.this, messageResId , Toast.LENGTH_SHORT).show();
    }
}

Java Source Code List

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