Android 开源在线音乐播放器

@Overrideprotected void onDraw(Canvas canvas) {  // 1.绘制顶部虚线  mTopLine.setBounds(0, getTop(), getWidth(), getTop() + mTopLineHeight);  mTopLine.draw(canvas);  // 2.绘制黑胶唱片外侧半透明边框  mCoverBorder.setBounds(mDiscPoint.x - mCoverBorderWidth, mDiscPoint.y - mCoverBorderWidth,      mDiscPoint.x + mDiscBitmap.getWidth() + mCoverBorderWidth, mDiscPoint.y +          mDiscBitmap.getHeight() + mCoverBorderWidth);  mCoverBorder.draw(canvas);  // 3.绘制黑胶  // 设置旋转中心和旋转角度，setRotate和preTranslate顺序很重要  mDiscMatrix.setRotate(mDiscRotation, mDiscCenterPoint.x, mDiscCenterPoint.y);  // 设置图片起始坐标  mDiscMatrix.preTranslate(mDiscPoint.x, mDiscPoint.y);  canvas.drawBitmap(mDiscBitmap, mDiscMatrix, null);  // 4.绘制封面  mCoverMatrix.setRotate(mDiscRotation, mCoverCenterPoint.x, mCoverCenterPoint.y);  mCoverMatrix.preTranslate(mCoverPoint.x, mCoverPoint.y);  canvas.drawBitmap(mCoverBitmap, mCoverMatrix, null);  // 5.绘制指针  mNeedleMatrix.setRotate(mNeedleRotation, mNeedleCenterPoint.x, mNeedleCenterPoint.y);  mNeedleMatrix.preTranslate(mNeedlePoint.x, mNeedlePoint.y);  canvas.drawBitmap(mNeedleBitmap, mNeedleMatrix, null);}

@Overrideprotected void onDraw(Canvas canvas) {  super.onDraw(canvas);  // 中心Y坐标  float centerY = getHeight() / 2 + mTextSize / 2 + mAnimOffset;   // 无歌词文件  if (!hasLrc()) {    float centerX = (getWidth() - mCurrentPaint.measureText(label)) / 2;    canvas.drawText(label, centerX, centerY, mCurrentPaint);    return;  }   // 画当前行  String currStr = mLrcTexts.get(mCurrentLine);  float currX = (getWidth() - mCurrentPaint.measureText(currStr)) / 2;  canvas.drawText(currStr, currX, centerY, mCurrentPaint);   // 画当前行上面的  for (int i = mCurrentLine - 1; i >= 0; i--) {    String upStr = mLrcTexts.get(i);    float upX = (getWidth() - mNormalPaint.measureText(upStr)) / 2;    float upY = centerY - (mTextSize + mDividerHeight) * (mCurrentLine - i);    // 超出屏幕停止绘制    if (upY - mTextSize < 0) {      break;    }    canvas.drawText(upStr, upX, upY, mNormalPaint);  }   // 画当前行下面的  for (int i = mCurrentLine + 1; i < mLrcTimes.size(); i++) {    String downStr = mLrcTexts.get(i);    float downX = (getWidth() - mNormalPaint.measureText(downStr)) / 2;    float downY = centerY + (mTextSize + mDividerHeight) * (i - mCurrentLine);    // 超出屏幕停止绘制    if (downY > getHeight()) {      break;    }    canvas.drawText(downStr, downX, downY, mNormalPaint);  }}