Android Canvas Redo and Undo Operation

Question

I am working on a drawing project. My code is working perfectly other than canvas redo and undo operations. My undo operation removes paths from the paths Arr

Answer 1

Problem

The path is only shown when you finish drawing it which leaves the user clueless as to what he is drawing

Solution

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

   for (Path p : paths){
        canvas.drawPath(p, mPaint);
    }

    //Draw path along with the finger
    canvas.drawPath(mPath, mPaint);
}

Add canvas.drawPath(mPath,mPaint) to onDraw() so the user gets a feeling of actually painting on the canvas.