I'm new to android. I'm trying to make a quiz app which has categories (history, sports...).
There is only one table with 60 questions in database. First 10 question are from category one(history) and 10 to 20 from category second(sports) and so on. I want that on click of First category only first 10 questions will be fetched and on click on second category only 10 to 20 questions will be fetched. Can we solve this problem passing some value through intent in onclick() and use that value in if else for bounding the questions?
QuestionActivity.java
public class QuestionActivity extends Activity {
List<Question> quesList;
int score = 0;
Random r = new Random();
int qid= (r.nextInt(60) + 0);
Question currentQ;
TextView txtQuestion, times, scored;
Button button1, button2, button3;
CounterClass timer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
QuizHelper db = new QuizHelper(this); // my question bank class
quesList = db.getAllQuestions(); // this will fetch all quetonall
questions
currentQ = quesList.get(qid); // the current question
txtQuestion = (TextView) findViewById(R.id.txtQuestion);
// the textview in which the question will be displayed
// the three buttons,
// the idea is to set the text of three buttons with the options from
question bank
button1 = (Button) findViewById(R.id.button1);
button2 = (Button) findViewById(R.id.button2);
button3 = (Button) findViewById(R.id.button3);
// the textview in which score will be displayed
scored = (TextView) findViewById(R.id.score);
// the timer
times = (TextView) findViewById(R.id.timers);
// method which will set the things up for our game
setQuestionView();
times.setText("00:00:30");
// A timer of 30 seconds to play for, with an interval of 1 second
(1000 milliseconds)
timer = new CounterClass(30000, 1000);
timer.start();
// button click listeners
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// passing the button text to other method
// to check whether the anser is correct or not
// same for all three buttons
getAnswer(button1.getText().toString());
}
});
button2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getAnswer(button2.getText().toString());
}
});
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getAnswer(button3.getText().toString());
}
});
}
public void getAnswer(String AnswerString) {
if (currentQ.getANSWER().equals(AnswerString)) {
// if conditions matches increase the int (score) by 1
// and set the text of the score view
score++;
scored.setText("Score : "+ score);
}
else {
// if unlucky start activity and finish the game
timer.cancel();
Intent intent = new Intent(QuestionActivity.this,
ResultActivity.class);
// passing the int value
Bundle b = new Bundle();
b.putInt("score", score); // Your score
intent.putExtras(b); // Put your score to your next
startActivity(intent);
finish();
}
if (qid < 60) {
// if questions are not over then do this
currentQ = quesList.get(qid);
setQuestionView();
} else {
// if over do this
timer.cancel();
Intent intent = new Intent(QuestionActivity.this,
ResultActivity.class);
Bundle b = new Bundle();
b.putInt("score", score); // Your score
intent.putExtras(b); // Put your score to your next
startActivity(intent);
finish();
}
}
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
@SuppressLint("NewApi")
public class CounterClass extends CountDownTimer {
public CounterClass(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
// TODO Auto-generated constructor stub
}
@Override
public void onFinish() {
times.setText("Time is up");
Intent intent = new Intent(QuestionActivity.this,
ResultActivity.class);
timer.cancel();
Bundle b = new Bundle();
b.putInt("score", score); // Your score
intent.putExtras(b); // Put your score to your next
startActivity(intent);
finish();
}
@Override
public void onTick(long millisUntilFinished) {
// TODO Auto-generated method stub
long millis = millisUntilFinished;
String hms = String.format(
"%02d:%02d:%02d",
TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis)
- TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS
.toHours(millis)),
TimeUnit.MILLISECONDS.toSeconds(millis)
-
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS
.toMinutes(millis)));
System.out.println(hms);
times.setText(hms);
}
}
private void setQuestionView() {
// the method which will put all things together
txtQuestion.setText(currentQ.getQUESTION());
button1.setText(currentQ.getOPTA());
button2.setText(currentQ.getOPTB());
button3.setText(currentQ.getOPTC());
qid= (r.nextInt(60) + 0);
}
}
Home.java
public class Home extends Activity {
Button play,about,help,quit;
ImageView img;
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.home);
play=(Button)findViewById(R.id.play);
about=(Button)findViewById(R.id.about);
quit=(Button)findViewById(R.id.quit);
help=(Button)findViewById(R.id.help);
play.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent=new Intent(getApplicationContext(),QuestionActivity.class);
startActivity(intent);
finish();
}
});
quit.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
about.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(getApplicationContext(),about.class);
startActivity(intent);
}
});
help.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(getApplicationContext(),help.class);
startActivity(intent);
}
});
}
}
