private RectF rectBorder;
if (rectBorder == null) {
    rectBorder = new RectF(0.5f * dp1, 0.5f * dp1, waveActualSizeWidth - 0.5f * dp1, waveActualSizeHeight - 0.5f * dp1);
}
canvas.drawRoundRect(rectBorder, dp27, dp27, borderPaint);

//這里用到了緩存 根據(jù)參數(shù)創(chuàng)建新位圖
if (circleBitmap == null) {
    circleBitmap = Bitmap.createBitmap(waveActualSizeWidth, waveActualSizeHeight, Bitmap.Config.ARGB_8888);
}
//以該bitmap為底創(chuàng)建一塊畫布
if (bitmapCanvas == null) {
    bitmapCanvas = new Canvas(circleBitmap);
}
// 圓角矩形背景，為了能讓波浪填充完整個(gè)圓形背景
if (rectBg == null) {
    rectBg = new RectF(0, 0, waveActualSizeWidth, waveActualSizeHeight);
}
bitmapCanvas.drawRoundRect(rectBg, dp27, dp27, backgroundPaint);
//裁剪圖片
canvas.drawBitmap(circleBitmap, 0, 0, null);

/**
 * 繪制波浪線
 */
private Path canvasWavePath() {
    //要先清掉路線
    wavePath.reset();
    //起始點(diǎn)移至(0,0) p0 -p1 的高度隨著進(jìn)度的變化而變化
    wavePath.moveTo((currentPercent) * waveActualSizeWidth, -moveDistance);
    //最多能繪制多少個(gè)波浪
    //其實(shí)也可以用 i < getWidth() ;i+=waveLength來(lái)判斷 這個(gè)沒(méi)那么完美
    //繪制p0 - p1 繪制波浪線 這里有一段是超出View的，在View右邊距的右邊 所以是* 2
    for (int i = 0; i < waveNumber * 2; i++) {
        wavePath.rQuadTo(waveHeight, waveLength / 2, 0, waveLength);
        wavePath.rQuadTo(-waveHeight, waveLength / 2, 0, waveLength);
    }
    //連接p1 - p2
    wavePath.lineTo(0, waveActualSizeHeight);
    //連接p2 - p0
    wavePath.lineTo(0, 0);
    //封閉起來(lái)填充
    wavePath.close();
    return wavePath;
}

/**
 * 繪制第二層波浪
 */
private Path canvasSecondPath() {
    secondWavePath.reset();
    //初始點(diǎn)移動(dòng)到下方
    secondWavePath.moveTo((currentPercent) * waveActualSizeWidth, waveActualSizeHeight + moveDistance);
    for (int i = 0; i < waveNumber * 2; i++) {
        secondWavePath.rQuadTo(waveHeight, -waveLength / 2, 0, -waveLength);
        secondWavePath.rQuadTo(-waveHeight, -waveLength / 2, 0, -waveLength);
    }
    secondWavePath.lineTo(0, 0);
    secondWavePath.lineTo(0, waveActualSizeHeight);
    secondWavePath.close();
    return secondWavePath;
}

/**
 * 設(shè)置進(jìn)度
 *
 * @param currentProgress 進(jìn)度
 * @param duration        達(dá)到進(jìn)度需要的時(shí)間
 */
public void setProgress(int currentProgress, long duration, AnimatorListenerAdapter listenerAdapter) {
    float percent = currentProgress * 1f / maxProgress;
    this.currentProgress = currentProgress;
    //從0開始變化
    currentPercent = 0;
    moveDistance = 0;
    mProgressAnimator = ValueAnimator.ofFloat(0, percent);
    //設(shè)置動(dòng)畫時(shí)間
    mProgressAnimator.setDuration(duration);
    //讓動(dòng)畫勻速播放，避免出現(xiàn)波浪平移停頓的現(xiàn)象
    mProgressAnimator.setInterpolator(new LinearInterpolator());
    mProgressAnimator.addUpdateListener(listener);
    mProgressAnimator.addListener(listenerAdapter);
    mProgressAnimator.start();

    // 波浪線
    startWaveAnimal();
}

/**
 * 波浪動(dòng)畫
 */
private void startWaveAnimal() {
    //動(dòng)畫實(shí)例化
    if (waveProgressAnimator == null) {
        waveProgressAnimator = new WaveProgressAnimal();
        //設(shè)置動(dòng)畫時(shí)間
        waveProgressAnimator.setDuration(2000);
        //設(shè)置循環(huán)播放
        waveProgressAnimator.setRepeatCount(Animation.INFINITE);
        //讓動(dòng)畫勻速播放，避免出現(xiàn)波浪平移停頓的現(xiàn)象
        waveProgressAnimator.setInterpolator(new LinearInterpolator());
        //當(dāng)前視圖開啟動(dòng)畫
        this.startAnimation(waveProgressAnimator);
    }
}