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Kotlin: Extensions

Kotlin has a feature to extend classes with new functions and properties, that you are normally not able to extend, maybe because they are final classes. Or you don’t want to create a custom type just because you are missing… Continue Reading →

Merge Sort in Kotlin

I’m learning Kotlin. It’s a statically typed programming language developed by JetBrains running on the JVM. I believe Kotlin has a great future on Android, because it`s offering a lot of functions that Java is missing and i think Google… Continue Reading →

How to run a WebServer on Android

So i have an old Samsung Galaxy S2. And i was thinking about things i could do with it. And i thought, maybe i can try to create a litte home automation server on it. First thing i was looking… Continue Reading →

How to run Swift 4.0 on Ubuntu 16.04

Swift is a programming language developed by Apple Inc. for iOS, macOS, watchOS, tvOS, and Linux at the WWDC 2014. It shares a few similarities with Kotlin, which is now officially supported from Google for Android Development. Because it’s a… Continue Reading →

Android Studio: ADB Idea

Sometimes while developing you need to clear all your user data from your app. E.g when you want to test a fresh installation of your app. One way is to go to:

This is very annoying. Another way is to… Continue Reading →

How to create an Android Launcher App

What is a Launcher App? A Launcher app is the app that comes up when you press the home button or when you start your Android device. The main purpose of this app is to start other apps, but it… Continue Reading →

RxJava: A short Introduction

This post is under construction In the last weeks i made a few experiments with RxJava in Android apps. In this post i want to give a short introduction to the main concepts of RxJava. What is RxJava? RxJava stands… Continue Reading →

Xamarin.Forms: Customize ListView

In this post i want to show you how you can customize a Listview. I will create a ListView with different Layouts for the items.

Xamarin Forms: Call native code with DependencyService

Sometimes you need to use platform specific code in Xamarin Forms. To do this you can use DependencyService. In this example i want to show how you can call an Android specific mail intent.

Android Penetration Testing with QARK

In this post i want to show you how you can check your app against common security vulnerabilities with QARK (Quick Android Review Kit)

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