轮盘

package com.example.zhuanpantwo;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.RectF;
import android.os.strictmode.WebViewMethodCalledOnWrongThreadViolation;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.LinearInterpolator;
import android.view.animation.RotateAnimation;

/**
 * date:2018/11/2
 * author:赵增辉(赵增辉)
 * function:
 */
public class DiscView extends View implements View.OnClickListener {
    private RotateAnimation rotateAnimation;
    private Paint mPaint;
    private Paint strPaint;
    private int mWidth;
    private int mPadding;
    private String str = "start";
    private boolean isStart = false;
    public int[] colors = new int[]{Color.parseColor("#8EE5EE"), Color.parseColor("#FFD700"), Color.parseColor("#FFD39B"), Color.parseColor("#FF8247"), Color.parseColor("#FF34B3"), Color.parseColor("#F0E68C")};
    private String[] contents = new String[]{"美 女", "女 神", "热 舞", "丰 满", "性 感", "知 性"};
    private RectF rectF;

    public DiscView(Context context) {
        this(context, null);
    }

    public DiscView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public DiscView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initPaint();
        initAnim();
        setOnClickListener(this);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        setMeasuredDimension(300, 300);
        mWidth = getMeasuredWidth();
        mPadding = 5;
        initRect();
    }


    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
        super.onLayout(changed, left, top, right, bottom);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        //绘制圆
        mPaint.setStyle(Paint.Style.STROKE);
        canvas.drawCircle(mWidth / 2, mWidth / 2, mWidth / 2 - mPadding, mPaint);
        //绘制 6个椭圆
        mPaint.setStyle(Paint.Style.FILL);

        initArc(canvas);

        //绘制里面的小圆
        mPaint.setColor(Color.RED);
        mPaint.setStyle(Paint.Style.FILL);
        canvas.drawCircle(mWidth / 2, mWidth / 2, 50, mPaint);


        mPaint.setColor(Color.WHITE);
        mPaint.setTextSize(24);
        Rect rect = new Rect();

        mPaint.getTextBounds(str, 0, str.length(), rect);

        int strWidth = rect.width();//文本的宽度
        int textHeight = rect.height();//文本的高度
        canvas.drawText(str, mWidth / 2 - 25 + 25 - strWidth / 2, mWidth / 2 + textHeight / 2, mPaint);

    }

    private void initPaint() {


        strPaint = new Paint();
        strPaint.setStyle(Paint.Style.STROKE);
        strPaint.setAntiAlias(true);
        strPaint.setColor(Color.WHITE);
        strPaint.setStrokeWidth(5);

        mPaint = new Paint();
        mPaint.setStyle(Paint.Style.STROKE);
        mPaint.setAntiAlias(true);
        mPaint.setColor(Color.WHITE);
        mPaint.setStrokeWidth(3);
    }

    private void initAnim() { //以view的中心点为旋转参考点
        rotateAnimation = new RotateAnimation(0f, 360f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
        rotateAnimation.setRepeatCount(-1);
        rotateAnimation.setFillAfter(true);
    }

    private void initRect() {
        rectF = new RectF(0, 0, mWidth, mWidth);
    }

    /**
     * 绘制6个弧 和对应的文字
     */
    private void initArc(Canvas canvas) {
        for (int i = 0; i < 6; i++) {
            mPaint.setColor(colors[i]);
            canvas.drawArc(rectF, (i - 1) * 60 + 60, 60, true, mPaint);
        }
        for (int i = 0; i < 6; i++) {
            mPaint.setColor(Color.BLACK);
            Path path = new Path();
            path.addArc(rectF, (i - 1) * 60 + 60, 60);
            canvas.drawTextOnPath(contents[i], path, 60, 60, mPaint);
        }
    }


    @Override
    public void onClick(View view) {
        if (!isStart) {
            isStart = true;
            rotateAnimation.setDuration(1000);
            rotateAnimation.setInterpolator(new LinearInterpolator());//不停顿
            startAnimation(rotateAnimation);
        } else {
            isStart = false;
            stopAnim();
        }
    }

    /**
     * 停止动画
     */
    public void stopAnim() {
        clearAnimation();
    }
}