HtetWaiYanLin

Flutter

A quick cheatsheet of useful snippet for Flutter

Widget

A widget is the basic type of controller in Flutter Material. There are two type of basic Widget we can extend our classes: StatefulWidget or StatelessWidget.

Stateful

StatefulWidget are all the widget that interally have a dynamic value that can change during usage. It can receive an input value in the constructor or reference to functions. You need to create two classes like:

HtetWaiYanLin

import java.util.*;
import java.io.*;
import java.security.*;

public class ChangePassword
{
  private final static JKS j = new JKS();

  public static void main(String[] args) throws Exception
  {

HtetWaiYanLin

class HomePage extends StatelessWidget {
  HomePage(this.jwt, this.payload);
  
  factory HomePage.fromBase64(String jwt) =>
    HomePage(
      jwt,
      json.decode(
        ascii.decode(
          base64.decode(base64.normalize(jwt.split(".")[1]))
        )

HtetWaiYanLin

package com.example.csv;

import com.opencsv.bean.ConverterDate;
import com.opencsv.exceptions.CsvDataTypeMismatchException;
import java.lang.reflect.InvocationTargetException;
import java.time.LocalDate;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.Temporal;
import java.util.Locale;