Android自定义view之围棋动画

好久不见，最近公众号内粉丝要求上新一篇有点难度的自定义view文章，所以它来了！！

干货文,建议收藏

文章目录

Android自定义view之围棋动画
前言
完成效果图
一、测量
- 1.获取宽高
- 2.定义测量最小长度
二、绘制背景（棋盘）
- 1.初始化画笔
- 2.画棋盘
- 3.补棋盘瑕疵
三.画个不可改变的棋子（以便于了解动画移动位置）
四.为动画开始做准备以及动画
- 1.三个辅助类为动画做准备（参数模仿Android官方Demo）
- 2.自定义该接口实例来控制动画的更新计算表达式
- 3.棋子的创建
- 4.动画的创建
- 5.两个动画的同步执行
- 6.效果图
- 7.解决第6步问题
五.自定义属性
六.自定义属性设置后运行效果
七.小改变，视觉效果就不一样了！
八.源码
总结

前言

废话不多说直接开始

老规矩，文章最后有源码

完成效果图

棋子加渐变色

棋子不加渐变色

一、测量

1.获取宽高

 @Overrideprotected 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;}}

2.定义测量最小长度

将布局分为10份。以minwidth的1，3，5，7，9的倍数为标准点。

        minwidth = useWidth / 10;

二、绘制背景（棋盘）

1.初始化画笔

        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10pxmPaint.setAntiAlias(true);     //设置抗锯齿mPaint.setAlpha(255);        //设置画笔透明度

2.画棋盘

        //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

绘制完后，发现有点小瑕疵
效果图：

3.补棋盘瑕疵

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

效果图：

三.画个不可改变的棋子（以便于了解动画移动位置）

位置比例
（3,3）（3,5）（3,7）
（5,3）（5,5）（5,7）
（7,3）（7,5）（7,7）

        //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);

效果图：

四.为动画开始做准备以及动画

1.三个辅助类为动画做准备（参数模仿Android官方Demo）

主要为get set构造，代码会贴到最后

2.自定义该接口实例来控制动画的更新计算表达式

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()));}
}

3.棋子的创建

    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;}

4.动画的创建

    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);}}

5.两个动画的同步执行

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

6.效果图

视觉效果：感觉白子不太明显

7.解决第6步问题

在棋子的创建方法中添加渐变色

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

效果图：

五.自定义属性

attrs文件：

    <declare-styleable name="WeiqiView">
<!--        黑子颜色--><attr name="leftscolor" format="reference|color"/>
<!--        白子颜色--><attr name="rightscolor" format="reference|color"/>
<!--        棋盘颜色--><attr name="qipancolor" format="reference|color"/>
<!--        动画时间--><attr name="animalstime" format="integer"/></declare-styleable>

java文件中获取

    /*** 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();}

六.自定义属性设置后运行效果

七.小改变，视觉效果就不一样了！

然后，把背景注释，像不像那些等待动画？

八.源码

WeiqiView.java

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10pxmPaint.setAntiAlias(true);     //设置抗锯齿mPaint.setAlpha(255);        //设置画笔透明度}@Overrideprotected 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)@Overrideprotected 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();}@Overridepublic void onAnimationUpdate(ValueAnimator animation) {invalidate();}
}

QiziXYHolder.java

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());}
}

ShapeHolder.java

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;}
}

XYEvaluator.java

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()));}
}

XYHolder.java

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;}
}

attrs.xml

<resources><declare-styleable name="WeiqiView">
<!--        黑子颜色--><attr name="leftscolor" format="reference|color"/>
<!--        白子颜色--><attr name="rightscolor" format="reference|color"/>
<!--        棋盘颜色--><attr name="qipancolor" format="reference|color"/>
<!--        动画时间--><attr name="animalstime" format="integer"/></declare-styleable>
</resources>

布局调用

<com.shenzhen.jimeng.lookui.UI.WeiqiViewandroid:layout_centerInParent="true"android:id="@+id/weiqi"android:layout_width="400dp"android:layout_height="400dp"/>

activity文件中开启动画

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

总结

希望对您有所帮助，欢迎留言。如有问题可联系计蒙。

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Android自定义view之围棋动画

Android自定义view之围棋动画

文章目录

前言

完成效果图

一、测量

1.获取宽高

2.定义测量最小长度

二、绘制背景（棋盘）

1.初始化画笔

2.画棋盘

3.补棋盘瑕疵

三.画个不可改变的棋子（以便于了解动画移动位置）

四.为动画开始做准备以及动画

1.三个辅助类为动画做准备（参数模仿Android官方Demo）

2.自定义该接口实例来控制动画的更新计算表达式

3.棋子的创建

4.动画的创建

5.两个动画的同步执行

6.效果图

7.解决第6步问题

五.自定义属性

六.自定义属性设置后运行效果

七.小改变，视觉效果就不一样了！

八.源码

总结

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