通过自定义view来做一个五子棋

这是在慕课网找到的，如果有兴趣的同学可以去看看，老师讲的很好，我这只有成品代码

：

自定义view：

public class Wuziqi extends View{    private int mPanelWidth;    private float mLineHeight;    private int MAX_LINE=15;    private int MAX_COUNT_IN_LINE=5;    private Paint mpaint=new Paint();    private Bitmap mWhitePiece;    private Bitmap mBlackPiece;    private float ratioPieceOfLineHeight = 3 * 1.0f / 4;    //白棋先手，或者是轮到白棋了    private boolean mIsWhite=true;    private List<Point> mWhiteArray=new ArrayList<>();    private List<Point> mBlackArray=new ArrayList<>();    private boolean mIsGameOver;    private boolean mIsWhiteWinner;    public Wuziqi(Context context) {        this(context,null);    }    public Wuziqi(Context context, @Nullable AttributeSet attrs) {        this(context, attrs,0);    }    public Wuziqi(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        setBackgroundColor(0x44ff0000);        //初始化        init();    }    private void init() {        mpaint.setColor(0x88000000);        mpaint.setAntiAlias(true);        mpaint.setDither(true);        mpaint.setStyle(Paint.Style.STROKE);        //获取黑白棋        mWhitePiece= BitmapFactory.decodeResource(getResources(),R.drawable.stone_w2);        mBlackPiece= BitmapFactory.decodeResource(getResources(),R.drawable.stone_b1);    }    //测量    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);        //宽        int widthSize = MeasureSpec.getSize(widthMeasureSpec);        int widthMode = MeasureSpec.getMode(widthMeasureSpec);        //高        int heightSize = MeasureSpec.getSize(heightMeasureSpec);        int heightMode = MeasureSpec.getMode(heightMeasureSpec);        int witch = Math.min(widthSize, heightSize);        if(widthMode==MeasureSpec.UNSPECIFIED){            witch = heightSize;        }else if(heightMode==MeasureSpec.UNSPECIFIED){            witch = widthSize;        }        setMeasuredDimension(witch,witch);    }    //对关于尺寸的成员变量进行赋值    @Override    protected void onSizeChanged(int w, int h, int oldw, int oldh) {        super.onSizeChanged(w, h, oldw, oldh);        mPanelWidth = w;        mLineHeight = mPanelWidth * 1.0f / MAX_LINE;        int PieceWidth = (int) (mLineHeight* ratioPieceOfLineHeight);        //白棋        mWhitePiece = Bitmap.createScaledBitmap(mWhitePiece,PieceWidth,PieceWidth,false);        //黑棋        mBlackPiece = Bitmap.createScaledBitmap(mBlackPiece,PieceWidth,PieceWidth,false);    }    @Override    public boolean onTouchEvent(MotionEvent event) {        if(mIsGameOver){            return false;        }        int action = event.getAction();        if(action==MotionEvent.ACTION_DOWN){            int x= (int) event.getX();            int y= (int) event.getY();            Point p=getValidPoint(x,y);            if(mWhiteArray.contains(p)||mBlackArray.contains(p)){                return false;            }            if(mIsWhite){                mWhiteArray.add(p);            }else{                mBlackArray.add(p);            }            invalidate();            mIsWhite=!mIsWhite;        }        return true;    }    private Point getValidPoint(int x, int y) {        return  new Point((int) (x/mLineHeight) ,(int)(y/mLineHeight));    }    //绘制    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        //绘制棋盘        drawBoard(canvas);        //绘制棋子        drawPiece(canvas);        //五子连的逻辑判断        checkGameOver();    }    private void checkGameOver() {        //白棋赢        boolean whiteWin= checkFiveInLine(mWhiteArray);//黑棋赢        boolean blackWin= checkFiveInLine(mBlackArray);        //判断有一个赢就游戏Over        if(whiteWin||blackWin){            mIsGameOver=true;            mIsWhiteWinner = whiteWin;            String text=mIsWhiteWinner ? "白棋胜利" : "黑棋胜利";            Toast.makeText(getContext(),text,Toast.LENGTH_SHORT).show();            start();        }    }    public void start(){        mWhiteArray.clear();        mBlackArray.clear();        mIsGameOver=false;        mIsWhiteWinner=false;        invalidate();    }    private boolean checkFiveInLine(List<Point> mWhiteArray) {        for (Point p:mWhiteArray) {            int x=p.x;            int y=p.y;            boolean win= checkHorizontal(x,y,mWhiteArray);            if(win){return true;}            win= checkVertical(x,y,mWhiteArray);            if(win){return true;}            win= checkRight(x,y,mWhiteArray);            if(win){return true;}            win= checkLeft(x,y,mWhiteArray);            if(win){return true;}        }        return false;    }    //判断棋子是不是横向的连续的五个    private boolean checkHorizontal(int x, int y, List<Point> mWhiteArray) {        int count=1;        //左        for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {            if(mWhiteArray.contains(new Point(x-i,y))){                count++;            }else{                break;            }        }        if(count==MAX_COUNT_IN_LINE){            return  true;        }        //右        for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {            if(mWhiteArray.contains(new Point(x+i,y))){                count++;            }else{                break;            }        }        if(count==MAX_COUNT_IN_LINE){            return  true;        }        return false;    }    //判断棋子是不是纵向的连续的五个    private boolean checkVertical(int x, int y, List<Point> mWhiteArray) {        int count=1;        //上        for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {            if(mWhiteArray.contains(new Point(x,y-i))){                count++;            }else{                break;            }        }        if(count==MAX_COUNT_IN_LINE){            return  true;        }        //下        for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {            if(mWhiteArray.contains(new Point(x,y+i))){                count++;            }else{                break;            }        }        if(count==MAX_COUNT_IN_LINE){            return  true;        }        return false;    }    //判断棋子是不是左斜的连续的五个    private boolean checkLeft(int x, int y, List<Point> mWhiteArray) {        int count=1;        //左上        for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {            if(mWhiteArray.contains(new Point(x-i,y+i))){                count++;            }else{                break;            }        }        if(count==MAX_COUNT_IN_LINE){            return  true;        }        //左下        for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {            if(mWhiteArray.contains(new Point(x+i,y-i))){                count++;            }else{                break;            }        }        if(count==MAX_COUNT_IN_LINE){            return  true;        }        return false;    }    //判断棋子是不是右斜的连续的五个    private boolean checkRight(int x, int y, List<Point> mWhiteArray) {        int count=1;        //右上        for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {            if(mWhiteArray.contains(new Point(x-i,y-i))){                count++;            }else{                break;            }        }        if(count==MAX_COUNT_IN_LINE){            return  true;        }        //右下        for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {            if(mWhiteArray.contains(new Point(x+i,y+i))){                count++;            }else{                break;            }        }        if(count==MAX_COUNT_IN_LINE){            return  true;        }        return false;    }    private void drawPiece(Canvas canvas) {        //绘制白棋        for (int i = 0, n= mWhiteArray.size();i < n; i++) {            Point whitePoint =mWhiteArray.get(i);            canvas.drawBitmap(mWhitePiece,                    (whitePoint.x+(1-ratioPieceOfLineHeight)/2)*mLineHeight,                    (whitePoint.y+(1-ratioPieceOfLineHeight)/2)*mLineHeight,null);        }        //绘制黑棋        for (int i = 0, n= mBlackArray.size();i < n; i++) {            Point blackPoint =mBlackArray.get(i);            canvas.drawBitmap(mBlackPiece,                    (blackPoint.x+(1-ratioPieceOfLineHeight)/2)*mLineHeight,                    (blackPoint.y+(1-ratioPieceOfLineHeight)/2)*mLineHeight,null);        }    }    private void drawBoard(Canvas canvas) {        int w=mPanelWidth;        float lineHeight=mLineHeight;        for (int i = 0; i < MAX_LINE; i++) {            //设置起始的X坐标            int startX= (int) (lineHeight/2);            //设置结束的X坐标            int endX= (int) (w-lineHeight/2);            int y= (int) ((0.5+i)*lineHeight);            //画横向            canvas.drawLine(startX,y,endX,y,mpaint);            //画纵向            canvas.drawLine(y,startX,y,endX,mpaint);        }    }}

调用

<text.bwie.com.wuziqi.Wuziqi    android:layout_width="match_parent"    android:layout_height="match_parent" />