Android
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Overview An asynchronous callback-based Http client for Android built on top of Apache’s HttpClient libraries. All requests are made outside of your app’s main UI thread, but any callback logic will be executed on the same thread as the callback was created using Android’s Handler message passing. Features
Android Asynchronous Http Client
GEEK!mind: Android: Simple HttpClient to send/receive JSON Objects
This tutorial is focused on creating a very simple HTTP client for Google's mobile operating system Android , which then can communicate with a web server and exchange JSON information. I won't go too much into detail, since the code is pretty much self-explaining and already has a lot of comments describing the program flow. 1) Create a new Android project 2) Add permission to access the Internet from your application to your AndroidManifest.xml
June 13, 2011 Update: Please note that this tutorial was written over a year ago. ZXing has moved on quite a bit since then as have the Android Developer Tools. I haven’t had time to revisit and update the post but it should give you a good steer in the right direction.
Integrate zxing barcode scanner into your Android app natively using Eclipse « Damian Flannery's Blog
Roch Development: CheckedTextView
Time for an android example. See bottom for source code. Let's say you have a basic widget with a button.
Tips: How to install apk files on Android Emulator | Open Handset Magazine
Tips: How to install apk files on Android Emulator Posted on 19 January 2008 by Hatem Ben Yacoub If you are new to Android and looking for a way to test some of the currently available Android applications, here is how to proceed : First get the Android SDK and unzip it somewhere on your hard drive Add SDK_ROOT to your system variables pointing to /tools folder under the sdk Run the emulator Copy the apk file to /tools folder Change directory to /tools and run from commandline $adb install your_application.apk Now check applications list in the emulator and you should see the new application installed and ready. Some pointed me to the error message when running adb on windows : * deamon still not running * error: no device.
The Android UI toolkit offers several layout managers that are rather easy to use and, most of the time, you only need the basic features of these layout managers to implement a user interface. Sticking to the basic features is unfortunately not the most efficient way to create user interfaces. A common example is the abuse of LinearLayout , which leads to a proliferation of views in the view hierarchy. Every view, or worse every layout manager, you add to your application comes at a cost: initialization, layout and drawing become slower. The layout pass can be especially expensive when you nest several LinearLayout that use the weight parameter, which requires the child to be measured twice.
