Javaで作るブロック崩し⑤｜assetsフォルダで配置を決める 　

package com.example.myapp_block;

import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.Point;
import android.os.Bundle;
import android.os.Handler;
import android.view.Display;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.RelativeLayout;
import android.widget.TextView;


public class MainActivity extends AppCompatActivity {
    Bar bar;
    Ball ball;
    Block[][] block;
    TextView[] textView;
    Intent intent;
    Handler handler = new Handler();
    Runnable runnable;
    RelativeLayout relativeLayout;
    RelativeLayout.LayoutParams params;
    int width, height;
    int tap;
    int dx = 10, dy = 10;
    int breakBlocks = 0;
    int WC = ViewGroup.LayoutParams.WRAP_CONTENT;
    boolean isBreak = false;                              

    //①assetsフォルダ読み込み
    InputStream inputStream;
    BufferedReader bufferedReader;
    StringBuilder stringBuilder;
    String str;
    Pattern pattern1, pattern2;        //③
    Matcher matcher1, matcher2;
    List<String> list1, list2;

    //②ステージデータ
    //(ブロック)
    int colSize, rowSize;
    int margin;
    String blockType;                   


    @RequiresApi(api = Build.VERSION_CODES.O)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        relativeLayout = new RelativeLayout(this);
        relativeLayout.setBackgroundColor(Color.BLACK);
        setContentView(relativeLayout);

        WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
        Display display = windowManager.getDefaultDisplay();
        Point point = new Point();
        display.getSize(point);
        width = point.x;
        height = point.y;

        //④assetsファイルからテキストファイルの文字列データを入手
        inputStream = null;        
        bufferedReader = null;
        stringBuilder = null;
        try {
            //読み込み開始
            inputStream = getAssets().open("stage1");       
            bufferedReader = new BufferedReader(new InputStreamReader(inputStream));   
            stringBuilder = new StringBuilder();           
            while ((str = bufferedReader.readLine()) != null) {     //⑤   
                stringBuilder.append(str);
            }

        } catch (Exception e) {        //例外をキャッチした際の処理
            e.printStackTrace();      
        } finally {
            try {
                //読み込み終了
                if (inputStream != null) inputStream.close();
                if (bufferedReader != null) bufferedReader.close();
            } catch (Exception e) {        //例外をキャッチした際の処理
                e.printStackTrace();
            }
        }


        //⑥読み込んだ文字列から条件にマッチするものを取り出す
        if (stringBuilder != null) {

            // ""（ダブルクォーテーション）で挟まれた文字列を抽出する
            pattern1 = Pattern.compile("\".+?\"");
            matcher1 = pattern1.matcher(stringBuilder.toString());
            list1 = new ArrayList<String>();
            while (matcher1.find()) {
                list1.add(matcher1.group());
            }

            // ''（シングルクォーテーション）で挟まれた文字列を抽出する
            pattern2 = Pattern.compile("\'.+?\'");
            matcher2 = pattern2.matcher(stringBuilder.toString());
            list2 = new ArrayList<String>();
            while (matcher2.find()) {
                list2.add(matcher2.group());
            }

            //⑦ブロックの変数に格納
            colSize = Integer.parseInt(list1.get(0).substring(1, list1.get(0).length()-1));
            rowSize = Integer.parseInt(list1.get(1).substring(1, list1.get(1).length()-1));
            margin = Integer.parseInt(list1.get(2).substring(1, list1.get(2).length()-1));
            blockType = String.join("", list2).replace("'", "");     
        }

        //ボール生成
        ball = new Ball(MainActivity.this);
        ball.x = width / 2;
        ball.y = height / 2;
        relativeLayout.addView(ball);

        //バー生成
        bar = new Bar(MainActivity.this);
        bar.left = width / 3;
        bar.right = width / 3 * 2;
        bar.top = height / 5 * 4;
        bar.bottom = height / 5 * 4 + 20;
        relativeLayout.addView(bar);

        //⑧ブロック生成
        block = new Block[colSize][rowSize];
        int order = 0;       //文字列から１文字ずつ切り出すための変数
        for (int row = 0; row < rowSize; row++) {
            for (int col = 0; col < colSize; col++) {
                block[col][row] = new Block(MainActivity.this);
                block[col][row].left = (width - (colSize - 1) * margin) / colSize * col + col * margin;
                block[col][row].right = (width - (colSize - 1) * margin) / colSize * (col + 1) + col * margin;
                block[col][row].top = height / 36 * row + row * margin;      //⑨
                block[col][row].bottom = height / 36 * (row + 1) + row * margin;
                relativeLayout.addView(block[col][row]);

                //ブロックの配置する
                String type = blockType.substring(order, order+1);      //⑩
                if (type.equals("0")) {
                    block[col][row].top = -50;
                    block[col][row].bottom = -50;
                    block[col][row].setVisibility(View.GONE);       
                    breakBlocks++;
                }

                order++;
            }
        }

        //テキスト生成
        textView = new TextView[6];
        for (int num = 0; num < 6; num++) {
            textView[num] = new TextView(this);
            textView[num].setTextColor(Color.WHITE);
            textView[num].setText("");
            switch (num) {
                case 0: textViewProperty(num, 64, 270, 700);
                    break;
                case 1: textViewProperty(num, 64, 80, 700);
                    break;
                case 2: textViewProperty(num, 28, 80, 1100);
                    break;
                case 3: textViewProperty(num, 28, 610, 1100);
                    break;
                case 4: textViewProperty(num, 28, 650, 1100);
                    break;
                case 5: textViewProperty(num, 64, 130, 700);
                    break;
            }
        }

        textView[0].setText("スタート");
    }


    //テキストプロパティ設定メソッド
    public void textViewProperty(int num, int size, int leftMargin, int topMargin) {
        textView[num].setTextSize(size);
        params = new RelativeLayout.LayoutParams(WC, WC);      
        params.addRule(RelativeLayout.ALIGN_PARENT_TOP);                                   
        params.addRule(RelativeLayout.ALIGN_PARENT_LEFT);                                
        params.setMargins(leftMargin, topMargin, 0, 0);                       
        relativeLayout.addView(textView[num], params);                                    
    }


    // タッチイベントメソッド //
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        textView[0].setText("");
        
                   ・
                   ・
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        return super.onTouchEvent(event);
    }


    //当たり判定メソッド(オブジェクト用)
    public void ballHit(int left, int top, int right, int bottom, boolean isBreakObject) {
        //左面
        if ((ball.x + ball.radius <= left + 5) &&

                   ・
                   ・
                   ・

                isBreak = true;
            }
        }
    }


    //ブロックを壊すメソッド
    public void breakBlock(int col, int row) {
        block[col][row].top = -50;
        block[col][row].bottom = -50;
        block[col][row].setVisibility(View.GONE);
        breakBlocks++;                                  
    }

}