MainActivity.java 文件源码

private void drawOnTouchMove() {
    Paint paint = new Paint();
    paint.setStrokeWidth((float) updatedBrushSize);
    paint.setColor(0);
    paint.setStyle(Style.STROKE);
    paint.setAntiAlias(true);
    paint.setStrokeJoin(Join.ROUND);
    paint.setStrokeCap(Cap.ROUND);
    paint.setXfermode(new PorterDuffXfermode(Mode.SRC));
    canvasMaster.drawPath(drawingPath, paint);
    touchImageView.invalidate();
}