jogboms

Android: Generate Release/Debug Keystores

Generate Keystores

Debug Keystore

$ keytool -genkey -v -keystore debug.keystore -storepass android -alias androiddebugkey -keypass android -keyalg RSA -keysize 2048 -validity 10000 -dname "C=US, O=Android, CN=Android Debug"

jogboms

Hey 👋

If you have not already seen https://gist.github.com/jogboms/7bc0318e9b33a4b4817306c5333a6cf3 then do have a look before this as this is only an extension to support the Flutter framework.

You can see this in action via this DartPad

jogboms

Hey 👋

This is an attempt to recreate to a degree the essence of Riverpod. There is also a Flutter version https://gist.github.com/jogboms/f7f44f11e2d9aa30d355f94f5257281d.

Warning

As you would later notice, there are two major missing pieces: A robust error handling mechanism & Tests. The goal is educational and not a replacement of the said library.

See the hosted version on DartPad.

jogboms

A simple benchmark of jogboms/registry.dart vs MelbourneDeveloper/ioc_container vs fluttercommunity/get_it for educational purposes

Results as at 18/06/2023

get_it -> 7.6.0
ioc_container -> 1.0.12
registry -> https://github.com/jogboms/registry.dart/commit/c93055554a589cc8e8b03b7ff35502438cfc235f

jogboms

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

void main() => runApp(
      const MaterialApp(
        debugShowCheckedModeBanner: false,
        home: SliverPhysicalShapeDemo(),
      ),
    );

jogboms

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

void main() => runApp(
      const MaterialApp(
        debugShowCheckedModeBanner: false,
        home: ParallaxHeaderDemo(),
      ),
    );

jogboms

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

void main() {
  runApp(const App());
}

class App extends StatelessWidget {
  const App({super.key});

jogboms

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

Download This sample on Google Play Store

jogboms

// AFTER: Added this for `lerpDouble`
import 'dart:ui';

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {

jogboms

Demystifying the journey from Widget to the RenderObject.

These are Dartpad links to the examples. Full repo can be found jogboms/flutter_guild_demo

Widget ・ Gist ・ Dartpad

Multi-Child layout ・ Gist ・ Dartpad

CustomPainter ・ Gist ・ Dartpad