Work1

package com.example.user.assignment10;

import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;

import com.example.user.assignment10.Adapter.GridViewAnswerAdapter;
import com.example.user.assignment10.Adapter.GridViewSuggestAdapter;
import com.example.user.assignment10.Common.Common;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public abstract class MainActivity extends AppCompatActivity implements View.OnClickListener {


    public GridViewAnswerAdapter answerAdapter;
    public List<String> suggestSource = new ArrayList<>();
    public GridViewSuggestAdapter suggestAdapter;
    public Button btnSubmit;
    public GridView gridViewAnswer, gridViewSuggest;
    public ImageView imageViewQuestion;

    /*ArrayList<Integer> pictures;

    {
        pictures = new ArrayList <Integer>() {


            R.drawable.crane;
            R.drawable.cross;
            R.drawable.date;
            R.drawable.funnel;
            R.drawable.pair;
            R.drawable.sign;
            R.drawable.snow;
            R.drawable.trip;
            R.drawable.zebra;

        };

    }*/

    // hidden first ArrayList <Integer> image_list ;


    public char[] answer;

    String correct_answer;


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

        //Init  View

       // myList.add(R.drawable.crane);
       ArrayList<> image_list = new ArrayList <> () {
            {
                add(getDrawable(R.drawable.crane)) ;
                add(getDrawable(R.drawable.cross)) ;
                add(getDrawable(R.drawable.date)) ;
                add(getDrawable(R.drawable.funnel)) ;
                add(getDrawable(R.drawable.pair)) ;
                add(getDrawable(R.drawable.sign)) ;
                add(getDrawable(R.drawable.snow)) ;
                add(getDrawable(R.drawable.trip)) ;
                add(getDrawable(R.drawable.zebra)) ;

                /*add(R.drawable.crane);
                add(R.drawable.cross);
                add(R.drawable.date);
                add(R.drawable.funnel);
                add(R.drawable.pair);
                add(R.drawable.sign);
                add(R.drawable.snow);
                add(R.drawable.trip);
                add(R.drawable.zebra);
                */
            }

        };

        initView();




    }

    private void initView() {
        gridViewAnswer = findViewById(R.id.gridViewAnswer);
        gridViewSuggest = findViewById(R.id.gridViewSuggest);

        imageViewQuestion = findViewById(R.id.image);

        //add setuplist method here to generate image question and setuplist
        // when app start
        setupList();

        btnSubmit = findViewById(R.id.btnSubmit);
        btnSubmit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String result="";
                for(int i=0;i< Common.user_submit_answer.length;i++)
                    result += String.valueOf(Common.user_submit_answer[i]);
             //Here we will convert char array to string, so we can use loop
                // or use String constructor to do that
                // if user submit equals correct answer, it will go to the next question


                if (result.equals(correct_answer))
                {
                    Toast.makeText(getApplicationContext(), String.format("Congrats,you got it right! This is%s", result),Toast.LENGTH_SHORT).show();
                    //Reset
                    Common.count=0;
                    Common.user_submit_answer= new char[correct_answer.length()];

                    //Set Adapter
                    GridViewAnswerAdapter answerAdapter = new GridViewAnswerAdapter(setupNullList(),getApplicationContext());
                    gridViewAnswer.setAdapter(answerAdapter);
                    answerAdapter.notifyDataSetChanged();
                    GridViewSuggestAdapter suggestAdapter = new GridViewSuggestAdapter(suggestSource,getApplicationContext(),MainActivity.this);
                    gridViewSuggest.setAdapter(suggestAdapter);
                    suggestAdapter.notifyDataSetChanged();

                    setupList();
                    }
                    else
                {
                    Toast.makeText(MainActivity.this,"Incorrect!!!",Toast.LENGTH_SHORT).show();
                }
            }
        });
    }

    private void setupList() {
        //Here we will setup Suggest character list, and image
        //Random image
        Random random = new Random();
        int imageSeleced = image_list[random.nextInt(image_list.length)]; // HERE ERROR
        imageViewQuestion.setImageResource(imageSeleced);

        correct_answer = getResources().getResourceName(imageSeleced);
        correct_answer = correct_answer.substring(correct_answer.lastIndexOf("/")+1);

        answer = correct_answer.toCharArray();
        Common.user_submit_answer = new char[answer.length];

        //Adding Answer character to List
        suggestSource.clear();
        for(char item:answer)
        {
            //converting correct answers to character and adding to list suggest
            suggestSource.add(String.valueOf(item));
        }
        //Random add some character to list
        for(int i= answer.length;i<answer.length*2;i++)
            //random some characters from alphabet list and add to our suggest list
        suggestSource.add(Common.alphabet_character[random.nextInt(Common.alphabet_character.length)]);

        //Sort random list
        Collections.shuffle(suggestSource);
        //set for GridView
        answerAdapter = new GridViewAnswerAdapter(setupNullList(),this);
        suggestAdapter = new GridViewSuggestAdapter(suggestSource,this,this);
        answerAdapter.notifyDataSetChanged();
        suggestAdapter.notifyDataSetChanged();
        gridViewSuggest.setAdapter(suggestAdapter);
        gridViewAnswer.setAdapter(answerAdapter);
    }

    //NULL CHAR ARRAY
    private char[] setupNullList() {
        char result[] = new char[answer.length];
        for(int i=0;i<answer.length;i++)
            result[i]=' ';
        return result;
        }
}