HTML5 and Qt, Two Popular Tools for Embedded Linux Application Development. Along with the proliferation of mobile and touchscreen devices, embedded Linux developers have shifted away from building their own operating systems from scratch.
Instead they’ve been moving over the past few years toward frameworks such as the Yocto Project, Tizen or Android. “We build upon existing frameworks and just extend with our hardware abstraction and with an application for user interaction,” said Jan-Simon Moeller, a Linux Foundation trainer in embedded Linux. Standardization has now also moved up to the application layer as developers adopt tools that simplify and speed UI creation.
Instead of building from scratch with Java, Objective C or C++, developers build on top of a stack of pre-defined software that limits the need to rewrite the application’s common functionality. The holy grail is an application framework that works across all devices and platforms, Moeller said. “Traditional embedded development typically didn’t have such nice UIs,” Moeller said.
Qt for Android (Necessitas) PyQt. Un article de Wikipédia, l'encyclopédie libre.
Un Hello World avec PyQt[modifier | modifier le code] Untitled Document. Delta XMPP Project » Qt Cryptographic Architecture (QCA) Language: English | Serbo-Croatian What is it?
Taking a hint from the similarly-named Java Cryptography Architecture, QCA aims to provide a straightforward and cross-platform crypto API, using Qt datatypes and conventions. QCA separates the API from the implementation, using plugins known as Providers. The advantage of this model is to allow applications to avoid linking to or explicitly depending on any particular cryptographic library. This allows one to easily change or upgrade crypto implementations without even needing to recompile the application! What do I need to be able to use it? QCA depends on Qt 4.2. What features are supported? SSL/TLSX.509OpenPGPCryptographic Message Syntax (for S/MIME)SASLPKCS#12Smart cards and other key storageSecure memorySecure randomRSA/DSA/Diffie-HellmanHash/Cipher/MAC algorithmsThreading considerationsAccess operating system root certificates How does it work?
What is the development plan? The base QCA library is considered mostly complete. Compatibility. Qt Quick Demos in Qt Creator. Orb Live disponible sur Android Market. 18juin Orb Live est une application développée par la société Orb Network, qui permet d’utiliser votre ordinateur pour renvoyer du contenu audio et vidéo en streaming sur des terminaux mobiles.
Grâce à cette application, vous pourrez regarder et accéder aux TV live, aux TV Internet et aux Webcams en utilisant une connexion WiFi ou EDGE. Une version Android de cette application est maintenant disponible. Pour utiliser cette solution vous devez télécharger et installer la version pour PC ici, puis installer Orb Live sur votre Android Phone. Cette application est une bonne solution pour avoir une télé nomade sur sa tablette tactile par exemple. Orb Live est disponible sous Android Market au prix de 9.99 dollars soit 8 euros. Co-fondateur du site Android france, senior lead developper, passionné de bière et de cigare cubain.
Introduction à Qt. Unit Testing with Qt Script. The first commit in the effort to port Qt 4 to Android was on Christmas Day, 2009: “Android mkspecs and semaphore” by BogDan Vatra. On January 22nd, 2010, he committed “A small step for Qt, a giant leap for android” with a working graphics system plugin and could actually run Qt applications on an Android device. He uploaded a video to celebrate. On February 20th, 2011, he announced the first usable release of Qt 4 for Android, under the moniker of Necessitas . For the past 3+ years, BogDan and others have been (and are still) developing Necessitas on their spare-time, and on November 8th, last year, BogDan agreed to take his work into Qt 5 and submit the port to the Qt Project . He pushed the first version of Qt 5 for Android to a WIP branch on January 4th, and recently we integrated into the “dev” branch, meaning that it will become part of Qt 5.1 when it is released.
On to the demos! In addition to the core parts of Qt, we also support the QML media player APIs in QtMultimedia. Qt Quick Designer. Qt5 Cadaques â Qt5 Cadaques Book v2015-03. Getting started Downloading QtCreator and Qt Libs. Introducing Qt Quick Controls in Qt 5.1. QT C++ GUI Tutorial 3- Qt Signal and slots (QSlider and QProgressBar) QML ♥ Android. QML ⥠Android. QML ♥ Android. Licensing-talk-about-mobile-platforms - Qt Wiki. This discussion revolved around licensing issues (if any) for app developers using the different mobile ports of Qt, mainly focusing on iOS and Android.
Who: Lars, Christy, Tukka, Ian, Markus, Espen (and some more I didn't catch the name of) Qt for Android / Necessitas As Qt for Android uses the LGPL version of Qt, and it's perfectly possible (and also recommended and supported) to dynamically link in the Qt libraries when creating an app - there are no problems for app developers using Qt for Android. The app developers can develop closed source code and publish the app - no worries. Only if you statically link with the Qt libs could there be a problem with closed source apps. Qt for iOS On iOS it is possible to use a dynamically linked version of the Qt libraries, and have them bundled with the application. QtDD14 -C++/QML Judgement Day - Bo Thorsen.
Managed C++ bridge about .NET.
Rasberry Pi & Qt.