DiscrollvablePathLayout.java 文件源码

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    makeAndMeasurePath();

    if (!isInEditMode()) {
        // Apply the dash effect
        float length = mPathMeasure.getLength();
        PathEffect effect = new DashPathEffect(new float[]{length, length}, length * (1 - mRatio));
        mPaint.setPathEffect(effect);
    }

    canvas.drawPath(mPath, mPaint);
}