Ajax - une autocomplétion pas à pas. Cette première étape est celle ou nous allons mettre en oeuvre le fameux objet xmlHttpRequest qui va nous permettre de faire communiquer notre navigateur web avec le serveur, sans que l'utilisateur ait besoin de recharger sa page.
C'est le coeur de toute page utilisant Ajax, et la nouveauté introduite par cette technologie. Mais pour autant, ce n'est absolument pas la partie la plus difficile de la chose.... L'objet xmlHttpRequest permet comme son nom l'indique d'effectuer une requête HTTP vers notre serveur (et uniquement celui-là pour des raisons de sécurité), et d'effectuer un traitement dans notre page au moment du retour de la requête. Dans notre cas, la requête nous donnera les 10 premières possibilités de complétion de notre champ texte.
Tout d'abord intéressons-nous à la page coté serveur qui va renvoyer les possibilités de complétion à notre utilisateur. Voici le fichier php que nous utiliserons: <? 1-B-1. <! Le body de la page ne changera pas de tout l'article. 1-B-2. 1-B-3. ViewPagerIndicator. Android: ViewFlipper Touch Animation like News & Weather. Introduction In thie tutorial we can learn how to solve a common problem in Android project, to have more info regarding Android project I suggest to you to download the ADT Android Pluglins and Eclipse.
Let's start with a little basics around Android development. Background To begin the android develompent you need tree important thins: The Android Sdk (you can download it here), A Project Editor (i suggest eclipse) and the Android eclipse plugin. When you have the environment ready you can start with this tutorial. When you open for the first time the Android SDK you need to create a virtual device, I suggest to create a common device using as Target the Android 1.6 Api Level 4 and then you need to add the hardware features that you need in your environment, for example: SD Card Support, Accellerometer, Camera Support etc. if you need help to start up an android virtual device follow this link. Start the Ecplise Project Follow these simple step to create an Android Project in eclipse: Android: touchscreen 'swipe' movement detection - Tutorial. Posted by DimasTheDriver | Jan 11th, 2011 | Filed under Programming This post explains how to code a simple swipe screen movement detection that can be used to control characters and other objects on an Android game or any other application.
All this code is written inside the View class, so open it up and let’s get to it. The first thing we will have to do is to create four different variables: one pair will store where the screen was touched, and the other one will be used to store the difference between the location where the screen has been pressed and where the screen has been released. Create this variables and assign zero to all of then, like this: private float initialX = 0 ; private float initialY = 0 ; private float deltaX = 0 ; private float deltaY = 0 ; private float initialX = 0; private float initialY = 0; private float deltaX = 0; private float deltaY = 0; With that set of variables created, let’s get to the method that will handle the touchscreen events.