Android自定义view之围棋动画效果的实现

 @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); mWidth = w; mHeight = h; useWidth = mWidth; if (mWidth > mHeight) { useWidth = mHeight; } }

 minwidth = useWidth / 10;

 mPaint = new Paint();  //创建画笔对象 mPaint.setColor(Color.BLACK); //设置画笔颜色 mPaint.setStyle(Paint.Style.FILL); //设置画笔模式为填充 mPaint.setStrokeWidth(4f);  //设置画笔宽度为10px mPaint.setAntiAlias(true);  //设置抗锯齿 mPaint.setAlpha(255);  //设置画笔透明度

 //细的X轴 canvas.drawLine(minwidth, 3 * minwidth, 9 * minwidth, 3 * minwidth, mPaint);// 斜线 canvas.drawLine(minwidth, 5 * minwidth, 9 * minwidth, 5 * minwidth, mPaint);// 斜线 canvas.drawLine(minwidth, 7 * minwidth, 9 * minwidth, 7 * minwidth, mPaint);// 斜线 //细的y轴 canvas.drawLine(3 * minwidth, minwidth, 3 * minwidth, 9 * minwidth, mPaint);// 斜线 canvas.drawLine(5 * minwidth, minwidth, 5 * minwidth, 9 * minwidth, mPaint);// 斜线 canvas.drawLine(7 * minwidth, minwidth, 7 * minwidth, 9 * minwidth, mPaint);// 斜线 mPaint.setStrokeWidth(8f); //粗的X轴（边框） canvas.drawLine(minwidth, minwidth, 9 * minwidth, minwidth, mPaint);// 斜线 canvas.drawLine(minwidth, 9 * minwidth, 9 * minwidth, 9 * minwidth, mPaint);// 斜线 //粗的y轴（边框） canvas.drawLine(minwidth, minwidth, minwidth, 9 * minwidth, mPaint);// 斜线 canvas.drawLine(9 * minwidth, minwidth, 9 * minwidth, 9 * minwidth, mPaint);// 斜线

 canvas.drawPoint(minwidth, minwidth, mPaint); canvas.drawPoint(9 * minwidth, minwidth, mPaint); canvas.drawPoint(minwidth, 9 * minwidth, mPaint); canvas.drawPoint(9 * minwidth, 9 * minwidth, mPaint);

 //画围棋 canvas.drawCircle(3*minwidth, 3*minwidth, useWidth/16, mPaint); canvas.drawCircle(3*minwidth, 7*minwidth, useWidth/16, mPaint); canvas.drawCircle(5*minwidth, 5*minwidth, useWidth/16, mPaint); canvas.drawCircle(7*minwidth, 3*minwidth, useWidth/16, mPaint); canvas.drawCircle(7*minwidth, 7*minwidth, useWidth/16, mPaint); mPaint.setColor(rightcolor); canvas.drawCircle(3*minwidth, 5*minwidth, useWidth/16, mPaint); canvas.drawCircle(5*minwidth, 3*minwidth, useWidth/16, mPaint); canvas.drawCircle(5*minwidth, 7*minwidth, useWidth/16, mPaint); canvas.drawCircle(7*minwidth, 5*minwidth, useWidth/16, mPaint);

 public class XYEvaluator implements TypeEvaluator { public Object evaluate(float fraction, Object startValue, Object endValue) { XYHolder startXY = (XYHolder) startValue; XYHolder endXY = (XYHolder) endValue; return new XYHolder(startXY.getX() + fraction * (endXY.getX() - startXY.getX()), startXY.getY() + fraction * (endXY.getY() - startXY.getY())); } }

 private ShapeHolder createBall(float x, float y, int color) { OvalShape circle = new OvalShape(); circle.resize(useWidth / 8f, useWidth / 8f); ShapeDrawable drawable = new ShapeDrawable(circle); ShapeHolder shapeHolder = new ShapeHolder(drawable); shapeHolder.setX(x - useWidth / 16f); shapeHolder.setY(y - useWidth / 16f); Paint paint = drawable.getPaint(); paint.setColor(color); return shapeHolder; }

 private void createAnimation() { if (bounceAnim == null) { XYHolder lstartXY = new XYHolder(3 * minwidth - useWidth / 16f, 3 * minwidth - useWidth / 16f); XYHolder processXY = new XYHolder(7 * minwidth - useWidth / 16f, 3 * minwidth - useWidth / 16f); XYHolder lendXY = new XYHolder(7 * minwidth - useWidth / 16f, 7 * minwidth - useWidth / 16f); bounceAnim = ObjectAnimator.ofObject(ballHolder, "xY", new XYEvaluator(), lstartXY, processXY, lendXY, lstartXY); bounceAnim.setDuration(animaltime); bounceAnim.setRepeatCount(ObjectAnimator.INFINITE); bounceAnim.setRepeatMode(ObjectAnimator.RESTART); bounceAnim.addUpdateListener(this); } if (bounceAnim1 == null) { XYHolder lstartXY = new XYHolder(7 * minwidth - useWidth / 16f, 7 * minwidth - useWidth / 16f); XYHolder processXY = new XYHolder(3 * minwidth - useWidth / 16f, 7 * minwidth - useWidth / 16f); XYHolder lendXY = new XYHolder(3 * minwidth - useWidth / 16f, 3 * minwidth - useWidth / 16f); bounceAnim1 = ObjectAnimator.ofObject(ballHolder1, "xY", new XYEvaluator(), lstartXY, processXY, lendXY, lstartXY); bounceAnim1.setDuration(animaltime); bounceAnim1.setRepeatCount(ObjectAnimator.INFINITE); bounceAnim1.setRepeatMode(ObjectAnimator.RESTART); bounceAnim1.addUpdateListener(this); } }

 AnimatorSet animatorSet = new AnimatorSet(); animatorSet.play(bounceAnim).with(bounceAnim1); animatorSet.start();

 RadialGradient gradient = new RadialGradient(useWidth / 16f, useWidth / 16f, useWidth / 8f, color, Color.GRAY, Shader.TileMode.CLAMP); paint.setShader(gradient); shapeHolder.setPaint(paint);

 /** * 获取自定义属性 */ private void initCustomAttrs(Context context, AttributeSet attrs) { //获取自定义属性 TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.WeiqiView); //获取颜色 leftcolor = ta.getColor(R.styleable.WeiqiView_leftscolor, Color.BLACK); rightcolor = ta.getColor(R.styleable.WeiqiView_rightscolor, Color.WHITE); qipancolor = ta.getColor(R.styleable.WeiqiView_qipancolor, Color.BLACK); //获取动画时间 animaltime = ta.getInt(R.styleable.WeiqiView_animalstime, 2000); //回收 ta.recycle(); }

 public class WeiqiView extends View implements ValueAnimator.AnimatorUpdateListener { private Paint mPaint; private int mWidth; private int mHeight; private int useWidth, minwidth; private int leftcolor; private int rightcolor; private int qipancolor; private int animaltime; //画一个圆（棋子） ValueAnimator bounceAnim, bounceAnim1 = null; ShapeHolder ball, ball1 = null; QiziXYHolder ballHolder, ballHolder1 = null; @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) public WeiqiView(Context context) { this(context, null); } @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) public WeiqiView(Context context, @Nullable AttributeSet attrs) { this(context, attrs, 0); } @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) public WeiqiView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { this(context, attrs, defStyleAttr, 0); initCustomAttrs(context, attrs); } @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) public WeiqiView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) { super(context, attrs, defStyleAttr, defStyleRes); } private void init() { initPaint(); } /** * 获取自定义属性 */ private void initCustomAttrs(Context context, AttributeSet attrs) { //获取自定义属性。 TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.WeiqiView); //获取颜色 leftcolor = ta.getColor(R.styleable.WeiqiView_leftscolor, Color.BLACK); rightcolor = ta.getColor(R.styleable.WeiqiView_rightscolor, Color.WHITE); qipancolor = ta.getColor(R.styleable.WeiqiView_qipancolor, Color.BLACK); animaltime = ta.getInt(R.styleable.WeiqiView_animalstime, 2000); //回收 ta.recycle(); } /** * 初始化画笔 */ private void initPaint() { mPaint = new Paint();  //创建画笔对象 mPaint.setColor(Color.BLACK); //设置画笔颜色 mPaint.setStyle(Paint.Style.FILL); //设置画笔模式为填充 mPaint.setStrokeWidth(4f);  //设置画笔宽度为10px mPaint.setAntiAlias(true);  //设置抗锯齿 mPaint.setAlpha(255);  //设置画笔透明度 } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); mWidth = w; mHeight = h; useWidth = mWidth; if (mWidth > mHeight) { useWidth = mHeight; } } @RequiresApi(api = Build.VERSION_CODES.KITKAT) @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); init(); minwidth = useWidth / 10; mPaint.setColor(qipancolor); if (ball == null) { ball = createBall(3 * minwidth, 3 * minwidth, leftcolor); ballHolder = new QiziXYHolder(ball); } if (ball1 == null) { ball1 = createBall(7 * minwidth, 7 * minwidth, rightcolor); ballHolder1 = new QiziXYHolder(ball1); } //细的X轴 canvas.drawLine(minwidth, 3 * minwidth, 9 * minwidth, 3 * minwidth, mPaint);// 斜线 canvas.drawLine(minwidth, 5 * minwidth, 9 * minwidth, 5 * minwidth, mPaint);// 斜线 canvas.drawLine(minwidth, 7 * minwidth, 9 * minwidth, 7 * minwidth, mPaint);// 斜线 //细的y轴 canvas.drawLine(3 * minwidth, minwidth, 3 * minwidth, 9 * minwidth, mPaint);// 斜线 canvas.drawLine(5 * minwidth, minwidth, 5 * minwidth, 9 * minwidth, mPaint);// 斜线 canvas.drawLine(7 * minwidth, minwidth, 7 * minwidth, 9 * minwidth, mPaint);// 斜线 mPaint.setStrokeWidth(8f); //粗的X轴（边框） canvas.drawLine(minwidth, minwidth, 9 * minwidth, minwidth, mPaint);// 斜线 canvas.drawLine(minwidth, 9 * minwidth, 9 * minwidth, 9 * minwidth, mPaint);// 斜线 //粗的y轴（边框） canvas.drawLine(minwidth, minwidth, minwidth, 9 * minwidth, mPaint);// 斜线 canvas.drawLine(9 * minwidth, minwidth, 9 * minwidth, 9 * minwidth, mPaint);// 斜线 //补瑕疵 canvas.drawPoint(minwidth, minwidth, mPaint); canvas.drawPoint(9 * minwidth, minwidth, mPaint); canvas.drawPoint(minwidth, 9 * minwidth, mPaint); canvas.drawPoint(9 * minwidth, 9 * minwidth, mPaint); //  //画围棋 //  canvas.drawCircle(3*minwidth, 3*minwidth, useWidth/16, mPaint); //  canvas.drawCircle(3*minwidth, 7*minwidth, useWidth/16, mPaint); //  canvas.drawCircle(5*minwidth, 5*minwidth, useWidth/16, mPaint); //  canvas.drawCircle(7*minwidth, 3*minwidth, useWidth/16, mPaint); //  canvas.drawCircle(7*minwidth, 7*minwidth, useWidth/16, mPaint); //  mPaint.setColor(rightcolor); //  canvas.drawCircle(3*minwidth, 5*minwidth, useWidth/16, mPaint); //  canvas.drawCircle(5*minwidth, 3*minwidth, useWidth/16, mPaint); //  canvas.drawCircle(5*minwidth, 7*minwidth, useWidth/16, mPaint); //  canvas.drawCircle(7*minwidth, 5*minwidth, useWidth/16, mPaint); canvas.save(); canvas.translate(ball.getX(), ball.getY()); ball.getShape().draw(canvas); canvas.restore(); canvas.save(); canvas.translate(ball1.getX(), ball1.getY()); ball1.getShape().draw(canvas); canvas.restore(); } private ShapeHolder createBall(float x, float y, int color) { OvalShape circle = new OvalShape(); circle.resize(useWidth / 8f, useWidth / 8f); ShapeDrawable drawable = new ShapeDrawable(circle); ShapeHolder shapeHolder = new ShapeHolder(drawable); shapeHolder.setX(x - useWidth / 16f); shapeHolder.setY(y - useWidth / 16f); Paint paint = drawable.getPaint(); paint.setColor(color); RadialGradient gradient = new RadialGradient(useWidth / 16f, useWidth / 16f, useWidth / 8f, color, Color.GRAY, Shader.TileMode.CLAMP); paint.setShader(gradient); shapeHolder.setPaint(paint); return shapeHolder; } private void createAnimation() { if (bounceAnim == null) { XYHolder lstartXY = new XYHolder(3 * minwidth - useWidth / 16f, 3 * minwidth - useWidth / 16f); XYHolder processXY = new XYHolder(7 * minwidth - useWidth / 16f, 3 * minwidth - useWidth / 16f); XYHolder lendXY = new XYHolder(7 * minwidth - useWidth / 16f, 7 * minwidth - useWidth / 16f); bounceAnim = ObjectAnimator.ofObject(ballHolder, "xY", new XYEvaluator(), lstartXY, processXY, lendXY, lstartXY); bounceAnim.setDuration(animaltime); bounceAnim.setRepeatCount(ObjectAnimator.INFINITE); bounceAnim.setRepeatMode(ObjectAnimator.RESTART); bounceAnim.addUpdateListener(this); } if (bounceAnim1 == null) { XYHolder lstartXY = new XYHolder(7 * minwidth - useWidth / 16f, 7 * minwidth - useWidth / 16f); XYHolder processXY = new XYHolder(3 * minwidth - useWidth / 16f, 7 * minwidth - useWidth / 16f); XYHolder lendXY = new XYHolder(3 * minwidth - useWidth / 16f, 3 * minwidth - useWidth / 16f); bounceAnim1 = ObjectAnimator.ofObject(ballHolder1, "xY", new XYEvaluator(), lstartXY, processXY, lendXY, lstartXY); bounceAnim1.setDuration(animaltime); bounceAnim1.setRepeatCount(ObjectAnimator.INFINITE); bounceAnim1.setRepeatMode(ObjectAnimator.RESTART); bounceAnim1.addUpdateListener(this); } } public void startAnimation() { createAnimation(); AnimatorSet animatorSet = new AnimatorSet(); animatorSet.play(bounceAnim).with(bounceAnim1); animatorSet.start(); } @Override public void onAnimationUpdate(ValueAnimator animation) { invalidate(); } }

 public class QiziXYHolder { private ShapeHolder mBall; public QiziXYHolder(ShapeHolder ball) { mBall = ball; } public void setXY(XYHolder xyHolder) { mBall.setX(xyHolder.getX()); mBall.setY(xyHolder.getY()); } public XYHolder getXY() { return new XYHolder(mBall.getX(), mBall.getY()); } }

 public class ShapeHolder { private float x = 0, y = 0; private ShapeDrawable shape; private int color; private RadialGradient gradient; private float alpha = 1f; private Paint paint; public void setPaint(Paint value) { paint = value; } public Paint getPaint() { return paint; } public void setX(float value) { x = value; } public float getX() { return x; } public void setY(float value) { y = value; } public float getY() { return y; } public void setShape(ShapeDrawable value) { shape = value; } public ShapeDrawable getShape() { return shape; } public int getColor() { return color; } public void setColor(int value) { shape.getPaint().setColor(value); color = value; } public void setGradient(RadialGradient value) { gradient = value; } public RadialGradient getGradient() { return gradient; } public void setAlpha(float alpha) { this.alpha = alpha; shape.setAlpha((int)((alpha * 255f) + .5f)); } public float getWidth() { return shape.getShape().getWidth(); } public void setWidth(float width) { Shape s = shape.getShape(); s.resize(width, s.getHeight()); } public float getHeight() { return shape.getShape().getHeight(); } public void setHeight(float height) { Shape s = shape.getShape(); s.resize(s.getWidth(), height); } public ShapeHolder(ShapeDrawable s) { shape = s; } }

 public class XYEvaluator implements TypeEvaluator { public Object evaluate(float fraction, Object startValue, Object endValue) { XYHolder startXY = (XYHolder) startValue; XYHolder endXY = (XYHolder) endValue; return new XYHolder(startXY.getX() + fraction * (endXY.getX() - startXY.getX()), startXY.getY() + fraction * (endXY.getY() - startXY.getY())); } }

 public class XYHolder { private float mX; private float mY; public XYHolder(float x, float y) { mX = x; mY = y; } public float getX() { return mX; } public void setX(float x) { mX = x; } public float getY() { return mY; } public void setY(float y) { mY = y; } }

 weiqi = (WeiqiView) findViewById(R.id.weiqi); weiqi.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { weiqi.startAnimation(); } });