幫助界面
幫助界面很簡單，把需要的文字排好寬度放在一個String數組里，然后繪制在屏幕上，假如一屏放不下就增加按鍵響應來翻屏，其實只是重新畫出數組前面或后面的幾個值，源代碼如下：

在MiningCanvas.java中添加如下代碼final String[] strGamehelp =new String[10];public MiningCanvas(MiningMIDlet miningMIDlet){    ...    strGamehelp[0]="此PRivate void paintHelpScreen(Graphics g){    g.setColor(0x00FFFFFF);    g.fillRect(0,0,canvasW,canvasH);    g.setFont(lowFont);    g.setColor(0x00000000);    for(int i=0;i<strGamehelp.length;i++){        g.drawString(strGamehelp[i],5,5+(lowFont.getHeight()+3)*i,Graphics.TOPGraphics.LEFT);    }}在keyPressed方法中的switch結構中添加case GAMESTATE_HELP://假如游戲現在的狀態為幫助狀態，那個不管玩家按哪個鍵都會跳轉到主菜單狀態    gamestate=GAMESTATE_MENU;    break;

游戲主界面
主界面的繪制分成幾個部分，一個是雷區棋盤的繪制，根據雷區二位數組中的每一個Bomb對象中的變量值繪出整個棋盤，假如hasFound值為false，畫出；假如hasFound值為true且isBomb值為false，那么會畫出這個雷位四周的雷數、、、、、、；假如hasFound值為true且isBomb值為true，那么會畫出這個雷位是哪一個玩家所挖出的，分別是和。第二個部分是玩家的選擇框。第三個部分是游戲的信息框，也就是兩個玩家目前的分值，還剩幾顆雷，信息框的圖片為。最后一個部分是提示當前輪到哪一個玩家掃雷，在雷區的外框用玩家的顏色提示，和在信息框中畫出玩家的旗幟和。
這里有幾個注重點：
1.雷區不能全部在屏幕中畫下，所以會通過卷軸滾動。整個雷區是16x16，我們的屏幕預備畫出10x12，用兩個變量（paintX和paintY）來控制當前要畫出的雷區左上角的雷位坐標，例如這兩個變量的值分別為3和4，那么會畫出橫軸3-10，縱軸4-13的雷位，選擇框的坐標（selectedX和selectedY）不用擔心，當他超出了屏幕，只需要增加或減少paintX和paintY的值即可，只要保證選擇框的坐標和paintX/Y坐標值得距離不超過9（10-1）和11（12-1）即可。這里要十分小心的是，我們這里所有的坐標值和雷區的二位數組bombs中的坐標正好相反，也就是選擇框（5，6）是類位bombs[6][5]。
2.在創建雷區二維Bomb數組時，二位數組的大小是18x18（new Bomb[miningMapGrid+2][miningMapGrid+2]），目的是在大小16x16的真正雷區外加一圈雷位，以避免bombOut()方法和其他需要周邊搜索雷位時不會出現超越邊界異常。
3.因為bombs數組中的索引1-16才是真正代表雷區中坐標（1，1）至（16，16）的雷位，所以在整個程序中，所有有關坐標和數組索引值的地方都要十分小心，不要出現位置錯誤
4.消息框中需要繪制的幾個數值的坐標變量（Player1X/Y，Player2X/Y，bombnowX/Y）的值都是相對于整個消息框的左上角的相對坐標，我們也可以為消息框的坐標單獨定義一對變量，這樣就更清楚了。
源代碼如下：

在MiningCanvas.java中添加如下代碼int empty;static final int miningMapGrid=16;//雷區為16格x16格static final int bombNum=52;//共有52顆雷int miningMapLength,miningGridLength;//整個雷區的邊長，每一個雷位格子的邊長int miningMapX,miningMapY;//雷區的左上角坐標int selectedX,selectedY;//選擇框的坐標，是在雷區里的坐標（1-16）int player1Found,player2Found;//兩個玩家的分值，即已經找到的雷數int paintX,paintY;//要畫出的區域的左上角坐標，是在雷區里的坐標（1-16）int bombLeft;//剩下未掃出的雷數static final int Player1X=10,Player1Y=30;//信息框中畫出玩家一分數的坐標位置，相對于信息框左上角static final int Player2X=10,Player2Y=90;//信息框中畫出玩家二分數的坐標位置，相對于信息框左上角static final int bombnowX=8,bombnowY=52;//信息框中畫出剩余雷數的坐標位置，相對于信息框左上角static final int bombMapW=10,bombMapH=12;//屏幕上能繪出的雷位的數量Bomb[][] bombs;boolean isPlayer1;//當前是否輪到玩家一掃雷Alert winAlert;//顯示輸贏信息的Alert對象String winString;//比出輸贏后要輸出的信息boolean sbWon;//是否得出輸贏static final Font font  = Font.getFont(Font.FACE_MONOSPACE,Font.STYLE_PLAIN,Font.SIZE_SMALL);    //消息框中使用的字體Image infoImg,splashImage;Image unFoundGroundImg;Image foundGroundImg;Image player1BombImg,player2BombImg,player1TurnImg,player2TurnImg;Image bomb1Img,bomb2Img,bomb3Img,bomb4Img,bomb5Img,bomb6Img,bomb7Img,bomb8Img;     //所有要用到的圖片public MiningCanvas(MiningMIDlet miningMIDlet){    ...    try{//實例化游戲中需要的Image對象        unFoundGroundImg=Image.createImage("/unfoundGroundbig.png");        foundGroundImg=Image.createImage("/foundGroundbig.png");        player1BombImg=Image.createImage("/player1bombbig.png");        player2BombImg=Image.createImage("/player2bombbig.png");        bomb1Img=Image.createImage("/bomb1big.png");        bomb2Img=Image.createImage("/bomb2big.png");        bomb3Img=Image.createImage("/bomb3big.png");        bomb4Img=Image.createImage("/bomb4big.png");        bomb5Img=Image.createImage("/bomb5big.png");        bomb6Img=Image.createImage("/bomb6big.png");        infoImg=Image.createImage("/info.png");        splashImage=Image.createImage("/occo.png");        player1TurnImg=Image.createImage("/player1turn.png");        player2TurnImg=Image.createImage("/player2turn.png");    }catch(IOException e){}    isPlayer1=true;//初始化玩家先后順序    miningGridLength=14;//初始化每一個雷位的邊長    miningMapLength=14*12;//整個掃雷棋盤的邊長    miningMapX=(canvasW-miningMapLength)/2;//屏幕上棋盤左上角的X坐標    miningMapY=(canvasH-miningMapLength)/2;//屏幕上棋盤左上角的Y坐標    selectedX=selectedY=miningMapGrid/2;//初始化選擇框的坐標為    player1Found=player2Found=0;//初始化兩個玩家的得分    paintX=paintY=3;//初始化整個雷區一開始在屏幕上顯示的范圍    sbWon=false;//初始化沒有玩家獲勝    bombLeft=bombNum;//初始化剩余雷數為總雷數    bombs=new Bomb[miningMapGrid+2][miningMapGrid+2];    bombInit();//初始化雷區 }private void paintGameScreen(Graphics g){    paintPlayer(g,isPlayer1);    paintMiningMap(g);    paintInfo(g);    paintSelected(g);}protected void paintInfo(Graphics g){    g.drawImage(infoImg,miningMapX+bombMapW*miningGridLength+1,                miningMapY,Graphics.TOPGraphics.LEFT);    g.setFont(font);    g.setColor(0x00FFFFFF);    g.drawString(String.valueOf(bombLeft),miningMapX+bombMapW*miningGridLength+bombnowX,                miningMapY+bombnowY,Graphics.TOPGraphics.LEFT);    g.drawString(String.valueOf(player1Found),miningMapX+bombMapW*miningGridLength+Player1X,                miningMapY+Player1Y,Graphics.TOPGraphics.LEFT);    g.drawString(String.valueOf(player2Found),miningMapX+bombMapW*miningGridLength+Player2X,                miningMapY+Player2Y,Graphics.TOPGraphics.LEFT);    //這個方法中接下來的代碼是用來在信息框中畫出小地圖，也就是屏幕上顯示的地雷區域在整個雷區      中的位置    g.setColor(0x00777777);    g.fillRect(miningMapX+bombMapW*miningGridLength+1,miningMapY+8*miningGridLength+1,                2*miningGridLength-2,2*miningGridLength-1);    g.setColor(0x00000000);    g.drawRect(miningMapX+bombMapW*miningGridLength+1,miningMapY+8*miningGridLength+1,                2*miningGridLength-2,2*miningGridLength-1);    g.setColor(0x00BBBBBB);    g.fillRect(miningMapX+bombMapW*miningGridLength+4+2*(paintX-1),                miningMapY+8*miningGridLength+4+2*(paintY-1),12,17);    g.setColor(0x00FFFFFF);    g.drawRect(miningMapX+bombMapW*miningGridLength+4+2*(paintX-1),                miningMapY+8*miningGridLength+4+2*(paintY-1),12,17);}protected void paintPlayer(Graphics g,boolean isPlayer1){    if(isPlayer1)//在棋盤外圍畫出玩家顏色的外框        g.setColor(0x000000FF);    else        g.setColor(0x00FF0000);    for(int i=1;i<=5;i++){        g.drawRect(miningMapX-i,miningMapY-i,miningMapLength+2*i,miningMapLength+2*i);    }    if(isPlayer1)//在信息框中畫出代表玩家的旗幟        g.drawImage(player1TurnImg,miningMapX+(bombMapW+1)*miningGridLength+1,                miningMapY+11*miningGridLength,Graphics.HCENTERGraphics.VCENTER);    else        g.drawImage(player2TurnImg,miningMapX+(bombMapW+1)*miningGridLength+1,                miningMapY+11*miningGridLength,Graphics.HCENTERGraphics.VCENTER);}public void paintMiningMap(Graphics g){    for(int i=0;i<bombMapH;i++){        for(int j=0;j<bombMapW;j++){//根據每個Bomb對象中的變量值畫出不同的圖片            if(!bombs[i+paintY+1][j+paintX+1].hasFound){                g.drawImage(unFoundGroundImg,miningMapX+j*miningGridLength,                        miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);            }            else {                if(!bombs[i+paintY+1][j+paintX+1].isBomb){                    switch(bombs[i+paintY+1][j+paintX+1].bombaround){                        case 0:                            g.drawImage(foundGroundImg,miningMapX+j*miningGridLength,                                miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                            break;                        case 1:                            g.drawImage(bomb1Img,miningMapX+j*miningGridLength,                                miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                            break;                        case 2:                            g.drawImage(bomb2Img,miningMapX+j*miningGridLength,                                miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                            break;                        case 3:                            g.drawImage(bomb3Img,miningMapX+j*miningGridLength,                                miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                            break;                        case 4:                            g.drawImage(bomb4Img,miningMapX+j*miningGridLength,                                miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                            break;                        case 5:                            g.drawImage(bomb5Img,miningMapX+j*miningGridLength,                                miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                            break;                        case 6:                            g.drawImage(bomb6Img,miningMapX+j*miningGridLength,                                miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                            break;                        default:                            g.drawImage(foundGroundImg,miningMapX+j*miningGridLength,                                miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                        break;                    }                }                else {                    if(bombs[i+paintY+1][j+paintX+1].isPlayer1){                        g.drawImage(player1BombImg,miningMapX+j*miningGridLength,                            miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                    }                    else{                        g.drawImage(player2BombImg,miningMapX+j*miningGridLength,                            miningMapY+i*miningGridLength,Graphics.TOPGraphics.LEFT);                    }                }            }        }    }}public void paintSelected(Graphics g){    g.setColor(0x00FF0000);//畫出選擇框，注重其與總雷區和能在屏幕上顯示出的區域間的關系    g.drawRoundRect(miningMapX+(selectedX-paintX)*miningGridLength-1,                miningMapY+(selectedY-paintY)*miningGridLength-1,                miningGridLength+1,miningGridLength+1,2,2);}在keyPressed方法中的switch結構中添加case GAMESTATE_GAMEING:{    if(keyCode==FullCanvas.KEY_SOFTKEY1){        gamestate=GAMESTATE_GAMEMENU;    }    else if (action == FullCanvas.LEFT ) {        selectedX=(--selectedX+miningMapGrid)%(miningMapGrid);    }    else if (action == FullCanvas.RIGHT) {        selectedX=(++selectedX)%(miningMapGrid);    }    else if (action == FullCanvas.UP) {        selectedY=(--selectedY+miningMapGrid)%(miningMapGrid);    }    else if (action == FullCanvas.DOWN) {        selectedY=(++selectedY)%(miningMapGrid);    }    else if (action == FullCanvas.FIRE) {        if(!bombs[selectedY+1][selectedX+1].hasFound){            if(bombs[selectedY+1][selectedX+1].isBomb){                bombs[selectedY+1][selectedX+1].hasFound=true;                bombs[selectedY+1][selectedX+1].isPlayer1=this.isPlayer1;                if(isPlayer1)                    player1Found++;                else                    player2Found++;                bombLeft--;                checkWin();//每次有玩家挖到了雷就監測其是否勝出            }            else{                bombOut(selectedY+1,selectedX+1);                //假如此雷位及四周都無雷，打開所有與其相連的相同情況的雷位及此區域周邊一圈雷位                isPlayer1=!isPlayer1;            }        }    }    //以下幾行代碼是調整顯示在屏幕上的區域的坐標，以免選擇框跑出屏幕范圍    if((selectedX-paintX)<0)        paintX=selectedX;    else if((selectedX-paintX)>=bombMapW)        paintX=selectedX-bombMapW+1;    if((selectedY-paintY)<0)        paintY=selectedY;    else if((selectedY-paintY)>=bombMapH)        paintY=selectedY-bombMapH+1;    break;}