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niusounds / async_data.dart
Last active Sep 19, 2019
Asynchronous data management widget.
View async_data.dart
import 'package:flutter/material.dart';
typedef AsyncDataBuilder<T> = Widget Function(BuildContext, T);
typedef AsyncErrorBuilder = Widget Function(BuildContext, dynamic);
/// 非同期データの取得を管理するWidget。
/// 初回ビルド時に非同期データを取得し、[builder]が返却するWidgetをビルドする。
/// その後、必要に応じて非同期データの再取得を行い、Widgetを再構築する。
/// [refreshOnDidPopNext]をtrueにすると、[Navigator.pop]でこのWidgetが含まれる画面に戻ってきた時に再取得する。
View AndroidManifest.xml
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT"/>
<category android:name="android.intent.category.BROWSABLE"/>
<data android:host="handle" android:scheme="myscheme" />
niusounds / main.dart
Created Jun 18, 2019
View main.dart
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
niusounds / deep_merge_map.dart
Last active May 27, 2019
Map deep merge in Dart.
View deep_merge_map.dart
Map<String, dynamic> deepMergeMap(Map<String, dynamic> a, Map<String, dynamic> b) {
b.forEach((k, v) {
if (!a.containsKey(k)) {
a[k] = v;
} else {
// TODO handle List type
if (a[k] is Map) {
deepMergeMap(a[k], b[k]);
} else {
a[k] = b[k];
niusounds / ffserver.js
Created Apr 19, 2019
ffmpeg live transcode test
View ffserver.js
const express = require('express')
const app = express()
const { spawn } = require('child_process');
const URL = ''
.get('/video.webm', (req, res) => {
niusounds / gist:51c9c23f349f492c29957f98e0adbfd7
Created Mar 28, 2019
convert video to animation WebP with infinite loop and appropriate size for web (ex. width=640px).
View gist:51c9c23f349f492c29957f98e0adbfd7
ffmpeg -y -i .\video.mp4 -loop 0 -vf scale=640:-1 output.webp
niusounds / rsa_pem.dart
Last active Dec 25, 2018 — forked from proteye/rsa_pem.dart
How to encode/decode RSA private/public keys to PEM format in Dart with asn1lib and pointycastle
View rsa_pem.dart
import 'dart:convert';
import 'dart:math';
import 'dart:typed_data';
import "package:pointycastle/export.dart";
import "package:asn1lib/asn1lib.dart";
List<int> decodePEM(String pem) {
var startsWith = [
"-----BEGIN PUBLIC KEY-----",
"-----BEGIN PRIVATE KEY-----",
niusounds / GetContext.cs
Last active Dec 14, 2018
Get Android Activity (Context) reference from Unity C#
View GetContext.cs
var unityPlayerClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
var activity = unityPlayerClass.GetStatic<AndroidJavaObject>("currentActivity");
niusounds / OrientationLiveData.kt
Created Jun 29, 2018
Device orientation sensor data for LiveData.
View OrientationLiveData.kt
import android.arch.lifecycle.LiveData
import android.content.Context
import android.hardware.Sensor
import android.hardware.SensorEvent
import android.hardware.SensorEventListener
import android.hardware.SensorManager
data class Orientation(
val azimuth: Float,
val pitch: Float,
niusounds / LocationLiveData.kt
Created Jun 29, 2018
Location wrapper for LiveData
View LocationLiveData.kt
import android.Manifest
import android.annotation.SuppressLint
import android.arch.lifecycle.LiveData
import android.content.Context
import android.location.Location
import android.os.Looper
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