Android 绘制太极图

绘制一个太极图：
package com.jackie.taijicircle;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.RectF;import android.util.AttributeSet;import android.view.View;/** * Created by Administrator on 2016/11/14. */public class TaijiCircleView extends View {    private Paint mPaint;    private int mWidth;    public TaijiCircleView(Context context) {        this(context, null);    }    public TaijiCircleView(Context context, AttributeSet attrs) {        this(context, attrs, 0);    }    public TaijiCircleView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        initPaint();    }    private void initPaint() {        mPaint = new Paint();        mPaint.setColor(Color.BLACK);        mPaint.setStrokeWidth(5);        mPaint.setAntiAlias(true);        mPaint.setDither(true);        mPaint.setStyle(Paint.Style.FILL);    }    private void drawCircle(Canvas canvas) {        mPaint.setColor(Color.BLACK);        //x轴正轴为0°//        canvas.drawArc(new RectF(0, 0, width, width), 90, 180, true, mPaint);        canvas.drawArc(new RectF(0, 0, mWidth, mWidth), 270, -180, true, mPaint);        mPaint.setColor(Color.WHITE);//        canvas.drawArc(new RectF(0, 0, width, width), 90, -180, true, mPaint);        canvas.drawArc(new RectF(0, 0, mWidth, mWidth), 270, 180, true, mPaint);    }    private void drawHalfCircle(Canvas canvas) {        mPaint.setColor(Color.BLACK);        canvas.drawArc(new RectF(mWidth / 4, 0, mWidth / 2 + mWidth / 4, mWidth / 2),                270, 180, true, mPaint);        mPaint.setColor(Color.WHITE);        canvas.drawArc(new RectF(mWidth / 4, mWidth / 2, mWidth / 2 + mWidth / 4, mWidth),                270, -180, true, mPaint);    }    private void drawSmallCircle(Canvas canvas) {        mPaint.setColor(Color.BLACK);        canvas.drawCircle(mWidth / 2, mWidth * 3 / 4, 20, mPaint);        mPaint.setColor(Color.WHITE);        canvas.drawCircle(mWidth / 2, mWidth / 4, 20, mPaint);    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        mWidth = Math.min(getWidth(), getHeight());        drawCircle(canvas);        drawHalfCircle(canvas);        drawSmallCircle(canvas);    }}
效果图如下：
Android 绘制太极图_第1张图片
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