Implementing an eraser in an Android drawing app - black trail and then transparent

Question

I have an drawing app for Android and I am currently trying to add a real eraser to it. Before, I had just used white paint for an eraser, but that won\'t do anymore since n

Answer 1

Can you comment canvas.drawPath(mPreviewPath, mPaint) line and see if it works:

@Override
protected void onDraw(Canvas canvas) {
    canvas.drawColor(Color.TRANSPARENT);
    canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
    canvas.drawPath(mPath, mPaint);
    //canvas.drawPath(mPreviewPath, mPaint);
}