JoorgeFerrari

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

class PhoneFormatter extends TextInputFormatter {
  @override
  TextEditingValue formatEditUpdate(TextEditingValue oldValue, TextEditingValue newValue) {
    if ( newValue.text.length < oldValue.text.length ) {
      bool isLastNumber = int.tryParse( newValue.text.substring(newValue.text.length - 1) ) != null;
      if ( !isLastNumber )
        return newValue;

JoorgeFerrari

class MyGridview extends StatelessWidget {

  List<dynamic> myitems = [ 'lorem', 'ipsum', 'dolor' ];

  @override
  Widget build(BuildContext context) {
    return GridView.count(
      crossAxisCount: 2, // This defined the number of itens on each row
      childAspectRatio: 0.85, // You use this to define the height of each child, kind of tricky at first
      children: List.generate(myitems.length, (index) {

JoorgeFerrari

Firestore.instance.collection(ProductModel.DB_REF).where({'sku': 'MYPRD'}).getDocuments().then( (result) {
    if ( result.documents.length == 0 )
      debugPrint('No result found');
  });

JoorgeFerrari

class ProductModel {
  static String DB_REF = 'products';

  String key;
  String name;
  String sku;
  double price;
  List<String> images;
  DateTime created;
  DateTime updated;

JoorgeFerrari

class GridviewFlexibleFix extends StatelessWidget {

  List<dynamic> mylist = [ 'one', 'two', 'three' ];

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        Text('Some other elements you might need'),
        Flexible(

JoorgeFerrari

class GridviewContainerFix extends StatelessWidget {

  List<dynamic> mylist = [ 'one', 'two', 'three' ];

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        Text('Some other elements you might need'),
        Container(