怎么在Android中使用view实现一个围棋动画效果？相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。
@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;
}
}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;
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
绘制完后，发现有点小瑕疵
效果图：
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：
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：
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：
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();
}
然后，把背景注释，像不像那些等待动画？
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();
}
}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.WeiqiView android: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() {
@Override
public void onClick(View v) {
weiqi.startAnimation();
}
});看完上述内容，你们掌握怎么在Android中使用view实现一个围棋动画效果的方法了吗？如果还想学到更多技能或想了解更多相关内容，欢迎关注亿速云行业资讯频道，感谢各位的阅读！
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