dart - Flutter - Drawing a rectangle in bottom -


i'm trying draw rectangle @ bottom rect object rect.fromltrb not drawing.

i not know if i'm interpreting rect object in wrong way or i'm writing drawrect object erroneously.

could me draw rectangle in bottom?

import 'package:flutter/material.dart';  void main() {   runapp(new materialapp(home: new homepage())); }  class homepage extends statefulwidget {   @override   homepagestate createstate() => new homepagestate(); }  class homepagestate extends state<homepage> {   @override   widget build(buildcontext context) {     return new scaffold(       body: new stack(         children: <widget>[           new positioned(             bottom: 0.0,             left: 0.0,             right: 0.0,             top: 0.0,             child: new custompaint(               painter: new sky(),             )           ),         ]       )     );   } }  class sky extends custompainter {   @override   void paint(canvas canvas, size size) {     canvas.drawrect(       new rect.fromltrb(         0.0, 100.0, 0.0, 0.0       ),       new paint()..color = new color(0xff0099ff),     );   }    @override   bool shouldrepaint(sky olddelegate) {     return false;   } }

your left , right same (0.0) draws empty rect. coordinates start on top, bottom should > top; try this

new rect.fromltrb( 0.0, 0.0, 20.0, 100.0 )


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