自定义圆环进度条

RoundProgress

public class RoundProgress extends View {
    private Paint paint = new Paint();
    private int roundColor;
    private int roundProgressColor;
    private int textColor;
    private float textSize;
    private float roundWidth;
    private int max = 100;
    private int progress = 50;
    public RoundProgress(Context context) {
        this(context, null);
    }
    public RoundProgress(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }
    public RoundProgress(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        TypedArray mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.RoundProgress);
        //圆环的颜色
        roundColor = mTypedArray.getColor(R.styleable.RoundProgress_roundColor, Color.RED);
        //圆环进度的颜色
        roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgress_roundProgressColor, Color.GREEN);
        //中间进度百分比文字字符串的颜色
        textColor = mTypedArray.getColor(R.styleable.RoundProgress_textColor, Color.GREEN);
        //中间进度百分比的字符串的字体大小
        textSize = mTypedArray.getDimension(R.styleable.RoundProgress_textSize, 15);
        //圆环的宽度
        roundWidth = mTypedArray.getDimension(R.styleable.RoundProgress_roundWidth, 5);
        mTypedArray.recycle();
    }
    @Override
    protected void onDraw(Canvas canvas) {
        //第一步：绘制一个最外层的圆
        paint.setColor(roundColor);
        paint.setStrokeWidth(roundWidth);
        paint.setStyle(Paint.Style.STROKE);
        paint.setAntiAlias(true);
        int center = getWidth() / 2;
        int radius = (int) (center - roundWidth / 2);
        canvas.drawCircle(center, center, radius, paint);
        //第二步：绘制正中间的文本
        float textWidth = paint.measureText(progress + "%");
        paint.setColor(textColor);
        paint.setTextSize(textSize);
        paint.setStrokeWidth(0);
        canvas.drawText(progress + "%", center - textWidth / 2, center + textSize / 2, paint);
        //第三步：
        /**
         * 参数解释：
         * oval：绘制弧形圈所包含的矩形范围轮廓
         * 0：开始的角度
         * 360 * progress / max：扫描过的角度
         * false：是否包含圆心
         * paint：绘制弧形时候的画笔
         */
        RectF oval = new RectF(center - radius, center - radius, center + radius, center + radius);
        paint.setColor(roundProgressColor);
        paint.setStrokeWidth(roundWidth);
        paint.setStyle(Paint.Style.STROKE);
        canvas.drawArc(oval, 0, 360 * progress / max, false, paint);
    }
    public void setProgress(int progress){
        this.progress = progress;
        if(progress>100){
            this.progress = 100;
        }
        postInvalidate();
    }
}

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="RoundProgress">
        <attr name="roundColor" format="color"/>
        <attr name="roundProgressColor" format="color"/>
        <attr name="roundWidth" format="dimension"></attr>
        <attr name="textColor" format="color"/>
        <attr name="textSize" format="dimension"/>
    </declare-styleable>
</resources>

  <!-- 圆环进度-->
                <cn.wh.ui.RoundProgress
                    android:id="@+id/p_progresss"
                    android:layout_width="120dp"
                    android:layout_height="120dp"
                    app:roundColor="@android:color/darker_gray"
                    app:roundProgressColor="@android:color/holo_red_dark"
                    app:roundWidth="10dp"
                    app:textColor="#18b4ed"
                    app:textSize="20sp">
                </cn.wh.ui.RoundProgress>

 private Runnable runnable = new Runnable() {
        @Override
        public void run() {
            int tempProgress = 0;
            try {
                while (tempProgress <= totalProgress) {
                    pProgresss.setProgress(tempProgress);
                    tempProgress++;
                    Thread.sleep(100);
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    };