Android Open Source - android-quiz-php Question Fragment

From Project

License

The source code is released under:
Copyright (c) 2014, Fabricio Bedeschi All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are me...
If you think the Android project android-quiz-php listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package com.quiz.php.ui;
/*w  w  w  .  jav a  2 s .  c o  m*/
import android.content.Context;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.NavUtils;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;

import com.quiz.php.R;
import com.quiz.php.core.Alternative;
import com.quiz.php.core.Question;
import com.quiz.php.core.Quiz;

import java.util.ArrayList;


/**
 * Created by fabricio on 1/29/14.
 */
public class QuestionFragment extends Fragment {

    public static final String EXTRA_QUESTION_INDEX = "com.android.quiz.question_index";
    private Context mContext;
    private CodeTextView mTxtViewQuestion;
    private Question mQuestion;
    private Quiz mQuiz;
    int mCurrent;

    private RadioGroup mAnswers;
    private ArrayList<Alternative> mAlternatives;
    private RadioButton[] mRadioAlternatives;
    private View mRootView;
    private CheckBox[] mCheckAlternatives;
    private TextView mChooseText;


    public static QuestionFragment newInstance (int index) {

        QuestionFragment fragment = new QuestionFragment();

        Bundle args = new Bundle();
        args.putInt(EXTRA_QUESTION_INDEX, index);
        fragment.setArguments(args);

        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);
        setRetainInstance(true);

        getActivity().getWindow().setSoftInputMode(
                WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

        mContext = getActivity();
        mQuiz = Quiz.get(mContext);
        mCurrent = getArguments().getInt(EXTRA_QUESTION_INDEX);

        mQuestion = mQuiz.getQuestion(mCurrent);
        mAlternatives = mQuestion.getAlternatives();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {

        mRootView = inflater.inflate(R.layout.question_fragment, parent, false);

        mTxtViewQuestion = (CodeTextView) mRootView.findViewById(R.id.questionTxtView);
        mTxtViewQuestion.setTextHighlighted(mQuestion.getQuestion());

        switch (mQuestion.getType()) {
            case 1:
                setSingleQuestion(inflater);
                break;
            case 2:
                setTextQuestion();
                break;
            case 3:
                setMultiQuestion();
                break;
        }

        return mRootView;
    }

    private void setMultiQuestion() {

        mCheckAlternatives = new CheckBox[mAlternatives.size()];
        LinearLayout optionsContainer = (LinearLayout) mRootView.findViewById(R.id.multi_alternatives);

        //number of options to choose
        mChooseText = (TextView) mRootView.findViewById(R.id.choose_text);
        mChooseText.setVisibility(View.VISIBLE);
        mChooseText.setText("Choose: "+String.valueOf(mQuestion.getRemaining()));


        ArrayList<Integer> checkedIndices = new ArrayList<Integer>();
        for (int i = 0; i < mAlternatives.size(); i++) {
            mCheckAlternatives[i] = new CheckBox(mContext);

            mCheckAlternatives[i].setText(mAlternatives.get(i).getAlternative());
            mCheckAlternatives[i].setId(mAlternatives.get(i).getId());
            mCheckAlternatives[i].setTextSize(TypedValue.COMPLEX_UNIT_PX,
                    getResources().getDimensionPixelSize(R.dimen.text_size_medium));

            if (Build.VERSION.SDK_INT > Build.VERSION_CODES.JELLY_BEAN) {
                mCheckAlternatives[i].setPadding(20, 20, 20, 20);
            }
            mCheckAlternatives[i].setButtonDrawable(getResources().getIdentifier(
                    "custom_button_" + i, "drawable",
                    getActivity().getApplicationContext().getPackageName()));

            mCheckAlternatives[i].setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    ArrayList<Alternative> alternatives = mQuestion.getAlternatives();

                    for (int i = 0; i < alternatives.size(); i++) {

                        Alternative alt = alternatives.get(i);
                        if (v.getId() == alt.getId()) {

                            if (alt.isSelected()) {
                                mCheckAlternatives[i].setTypeface(null, Typeface.NORMAL);
                                alt.setSelected(false);
                            } else if (mQuestion.getRemaining() > 0) {
                                mCheckAlternatives[i].setTypeface(null, Typeface.BOLD);
                                alt.setSelected(true);
                            } else {
                                mCheckAlternatives[i].setChecked(false);
                            }
                        }
                    }
                    mChooseText.setText("Choose: "+String.valueOf(mQuestion.getRemaining()));

                    //checks if the question is answered
                    if (mQuestion.getNumOfChecked()  > 0) {
                        mQuestion.setAnswered(true);
                    } else {
                        mQuestion.setAnswered(false);
                    }
                }
            });

            //finished styles
            if (mQuiz.isFinish()) {
                mCheckAlternatives[i].setEnabled(false);
                mCheckAlternatives[i].setTextColor(Color.BLACK);

                if (mAlternatives.get(i).isCorrect()) {
                    mCheckAlternatives[i].setBackgroundColor(
                            getResources().getColor(R.color.bg_correct));
                }
            }

            if (mAlternatives.get(i).isSelected()) {
                checkedIndices.add(i);
            }

            optionsContainer.addView(mCheckAlternatives[i]);
        }

        for (Integer i : checkedIndices ){
            mCheckAlternatives[i].setChecked(true);
            mCheckAlternatives[i].setTypeface(null, Typeface.BOLD);
        }
    }

    private void setSingleQuestion(LayoutInflater inflater) {
        mAnswers = (RadioGroup) mRootView.findViewById(R.id.radio_single_alternatives);
        mAnswers.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, int id) {
                mQuestion.setAnswered(true);

                ArrayList<Alternative> alternatives = mQuestion.getAlternatives();
                for (int i = 0; i < alternatives.size(); i++) {
                    Alternative alt = alternatives.get(i);

                    if (mRadioAlternatives != null) {
                        mRadioAlternatives[i].setTypeface(null, Typeface.BOLD);
                    }

                    if (id == alt.getId()) {
                        alt.setSelected(true);

                    } else {

                        alt.setSelected(false);
                        if (mRadioAlternatives != null) {
                            mRadioAlternatives[i].setTypeface(null, Typeface.NORMAL);
                        }
                    }
                }
            }
        });

        mRadioAlternatives = new RadioButton[mAlternatives.size()];
        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);

        //not set selected in add loop
        int indexSelected = -1;

        for (int i = 0; i < mAlternatives.size(); i++) {
            mRadioAlternatives[i] = (RadioButton) inflater.inflate(R.layout.alternative_option, null);
            mRadioAlternatives[i].setText(mAlternatives.get(i).getAlternative());
            mRadioAlternatives[i].setId(mAlternatives.get(i).getId());
            mRadioAlternatives[i].setLayoutParams(layoutParams);

            if (Build.VERSION.SDK_INT > Build.VERSION_CODES.JELLY_BEAN) {
                mRadioAlternatives[i].setPadding(20, 20, 20, 20);
            }
            mRadioAlternatives[i].setButtonDrawable(getResources().getIdentifier(
                    "custom_button_" + i, "drawable", getActivity().getApplicationContext().getPackageName()));

            //finished styles
            if (mQuiz.isFinish()) {
                mRadioAlternatives[i].setEnabled(false);
                mRadioAlternatives[i].setTextColor(Color.BLACK);

                if (mAlternatives.get(i).isCorrect()) {
                    mRadioAlternatives[i].setBackgroundResource(R.color.bg_correct);
                }
            }

            //options to radio group
            mAnswers.addView(mRadioAlternatives[i]);

            if (mAlternatives.get(i).isSelected()) {
                indexSelected = i;
            }
        }

        if (indexSelected != -1) {
            mRadioAlternatives[indexSelected].setChecked(true);
        }
    }

    /**
     * Set InputText for open field questions
     */
    private void setTextQuestion() {

        final EditText inputAnswer = (EditText) mRootView.findViewById(R.id.answer_input);
        inputAnswer.setVisibility(View.VISIBLE);
        if (mQuestion.getInputAnswer() != null) {
            inputAnswer.setText(mQuestion.getInputAnswer());
        }

        if (mQuiz.isFinish()) {
            inputAnswer.setEnabled(false);
            if (mQuestion.isCorrect()) {
                inputAnswer.setTextColor(getResources().getColor(R.color.input_answer_correct));
            } else {
                inputAnswer.setTextColor(getResources().getColor(R.color.input_answer_wrong));
            }

        } else {
            inputAnswer.addTextChangedListener(new TextWatcher() {
                @Override
                public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
                }

                @Override
                public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
                }

                @Override
                public void afterTextChanged(Editable editable) {
                    mQuestion.setInputAnswer(inputAnswer.getText().toString());
                }
            });
        }

        if (mQuiz.isFinish()) { //answer textView
            TextView answerTextView = (TextView) mRootView.findViewById(R.id.answer_question);
            answerTextView.setVisibility(View.VISIBLE);
            answerTextView.setText("Answer: " + mQuestion.getAnswer());
            answerTextView.setTypeface(null, Typeface.BOLD);
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                NavUtils.navigateUpFromSameTask(getActivity());
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }

    }

}
Java Source Code List
