having real trouble in this app ;

Question

i Created this app but after adding the marks showing feature .....

even with a lot of work i am not able to debug it

They are not letting me post as there is mostly code ( Google Terms of Service Last modified: October 25, 2017 (view archived versions)

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package com.example.user.questions;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import java.util.Arrays;

import static android.widget.Toast.makeText;
import static com.example.user.questions.R.string.your_answer;

public class MainActivity extends AppCompatActivity {

    private Button mTrueButton;
    private Button mFalseButton;
    private TextView mQuestionTextView;
    private Button mNextButton;
    private static final String  TAG = "QuizActivity";
    private static final String KEY_INDEX = "index";
    private int marksObtained = 0;
    private TextView mShowAnswers;



    //array for question
    private Question[] mQuestionBank = new Question[]
            {
              new Question( R.string.question_inc , true )  ,

              new Question( R.string.question_nda , true ),

              new Question( R.string.question_sex , false )
            };
    private int mCurrentIndex = 0 ;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate( savedInstanceState );
        setContentView( R.layout.activity_main );

        mTrueButton = findViewById( R.id.true_button );

        mFalseButton = findViewById( R.id.false_button );


        mNextButton = findViewById( R.id.next_button );
        mQuestionTextView = findViewById( R.id.questions_text );
        mShowAnswers = findViewById( R.id.show_result );

        //using nezt button here cause it should implement before setting text og question
        updateQuestion();
        mNextButton.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length ;

                    updateQuestion();
                    showAnswers( mCurrentIndex );

            }
        } );




        mTrueButton.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                checkAnswers( true );
                mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length ;

                updateQuestion();
                showAnswers( mCurrentIndex );


            }
        } );
        mFalseButton.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                checkAnswers( false );
                mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length ;

                updateQuestion();
                showAnswers( mCurrentIndex );
            }
        } );

    }
    private void updateQuestion() {
        int questions = mQuestionBank[mCurrentIndex].getTextResId();
        mQuestionTextView.setText( questions );    }

        private  void checkAnswers (boolean mUserPressedTrue){
            boolean answerIsTrue = mQuestionBank[mCurrentIndex].isAnswerTrue();

            int messageResId = 0;
            if (answerIsTrue == mUserPressedTrue) {
                messageResId = R.string.correct_toast;
                marksObtained = marksObtained + 1 ;

            } else {
                messageResId = R.string.wrong_toast;
            }

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

        }
    @Override
    public void onSaveInstanceState (Bundle savedInstanceState){
        super.onSaveInstanceState( savedInstanceState );
        savedInstanceState.putInt( KEY_INDEX , mCurrentIndex );
    }
    public void showAnswers (int var){
        if (var == 2) mShowAnswers.setText( marksObtained );
    }
}

log cat while i click last "next_button" hit

score 1 · Accepted Answer · answered Apr 03 '18 at 16:47

mShowAnswers.setText( marksObtained );

This line contains the bug. As you are setting text into the textview(mShowAnswers) and the marksObtained is integer value, what is happening is Android is taking this marksObtained integer value as @StringRes and is trying to get matching String Value from Strings.xml which is not found and hence the exception is shown.

Please dont pass integer value in the setText until you are passing value from Strings.xml using R.string.

To solve please use:

 mShowAnswers.setText( String.valueOf(marksObtained));

having real trouble in this app ;

1 Answers1