Tri Nguyen trinnguyen

Kotin, Swift, Xamarin, KMP, Xtext

trinnguyen / FileCrypto.cs

Last active September 20, 2020 11:39

File encryption with Tink iOS

	using System;
	using System.Diagnostics;
	using Foundation;
	using Tink;

	namespace TnnCrypto
	{
	public class FileCrypto
	{
	private readonly ITINKAead _aead;

trinnguyen / DefaultKeychain.cs

Created September 13, 2020 16:40

Simple wrapper for iOS Keychain usage for key-value

	using Foundation;
	using Security;

	namespace TnnCrypto
	{
	public class DefaultKeychain
	{
	static DefaultKeychain()
	{
	string id = NSBundle.MainBundle.ObjectForInfoDictionary("CFBundleIdentifier")?.ToString() ?? "";

trinnguyen / AesGcmAead.cs

Created September 13, 2020 16:37

C# Encrypt/Decrypt with BouncyCastle

	using System;
	using Org.BouncyCastle.Crypto.Engines;
	using Org.BouncyCastle.Crypto.Modes;
	using Org.BouncyCastle.Crypto.Parameters;
	using Org.BouncyCastle.Security;

	namespace TnnCrypto
	{
	public class AesGcmAead
	{

trinnguyen / msbuild_xamarin_android.md

Created September 14, 2019 09:04

MSBuild targets for Xamarin.Android

Xamarin.Android msbuild tasks

msbuild /t:Clean
msbuild /t:Build
msbuild /t:Rebuild
msbuild /t:Install
msbuild /t:UpdateAndroidResources

trinnguyen / resize.sh

Created September 7, 2019 14:56

Bash script to resize ios icons for cordova project (personal usage)

	#!/usr/bin/env bash
	# usage: sh resize.sh [PATH_TO_ICON_FOLDER]
	export MAGICK_HOME="$HOME/opt/ImageMagick-7.0.8"
	export DYLD_LIBRARY_PATH="$MAGICK_HOME/lib/"
	src=$1
	originfilepath="${src}/180x180.png"
	sizes=('20' '29' '40' '50' '57' '60' '58' '80' '72' '76' '87' '100' '114' '120' '144' '152' '167' '180' '1024')

	if test -f ${originfilepath}; then
	for s in ${sizes[@]}; do

trinnguyen / gist:b37daa22bef2b3293fcbe08b0d4b22c6

Created April 6, 2019 10:00

Commands sequence to fix Foxit Reader in Fedora 29

	cd ~/opt/foxitsoftware/foxitreader
	rm lib/libssl.so.10
	rm lib/libcrypto.so.10
	ln -s /lib64/libssl.so.10 lib/libssl.so.10
	ln -s /lib64/libcrypto.so.10 lib/libcrypto.so.10

trinnguyen / keyboard_helper_activity.cs

Last active March 15, 2019 12:58

Simply approach to detech keyboard visibility changed on Xamarin.Android, based on blog of PDFKit (https://pspdfkit.com/blog/2016/keyboard-handling-on-android/#)

	private void AddKeyboardVisibilityHandler()
	{
	var decorView = Window.DecorView;
	decorView.ViewTreeObserver.GlobalLayout += OnViewTreeObserverGlobalLayoutChange;
	}

	private void RemoveKeyboardVisibilityHandler()
	{
	var decorView = Window.DecorView;
	decorView.ViewTreeObserver.GlobalLayout -= OnViewTreeObserverGlobalLayoutChange;

trinnguyen / IosHelpers.cs

Created July 15, 2018 09:00

Xamarin ios check wether a ViewController is presented as Modal. Support NavigationController (not TabBar)

	public static bool CheckIsModalVC(UIViewController viewController)
	{
	// find root
	var vc = viewController;
	while (vc.NavigationController != null)
	{
	vc = vc.NavigationController;
	}

	// check cur

trinnguyen / xamarin tools

Last active December 8, 2017 04:17

Path of Frameworks in macOS (Mono.framework, Xamarin.* frameworks

	Framework path: /Library/Frameworks

	VSTool Commandline tool of VS4Mac: /Applications/Visual Studio.app/Contents/MacOS/vstool
	Available tools:
	- build: Project build tool
	- dbgen: Parser database generation tool
	- project-export: Project conversion tool
	- gsetup: Graphical extension setup utility
	- archive: Project archiving tool
	- account: Xamarin account tool

trinnguyen / styles.xml

Last active March 18, 2020 14:56

Android style for Splash screen with status bar and navigation bar are transparent, API 21+

	<style name="AppTheme.Splash">
	<item name="windowActionBar">false</item>
	<item name="windowNoTitle">true</item>
	<item name="android:statusBarColor">@android:color/transparent</item>
	<item name="android:navigationBarColor">@android:color/transparent</item>
	<item name="android:windowDrawsSystemBarBackgrounds">true</item>
	</style>