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Featured Articles

How to Select and Crop Image on Android

July 22, 2011 by Lorensius Londa 108 Comments

Sometimes when creating an Android app that includes user profile picture or avatar, we need to include a feature that enables users to select and crop image to update their profile picture. On Android we can accomplish that by using intent to open image cropper app. To select an image from files, … [Read more...] about How to Select and Crop Image on Android

How to Use Foursquare API on Android Application

July 17, 2011 by Lorensius Londa 82 Comments

This is my second post about using Oauth enabled API on Android. This time i'll try to explain how to use Foursquare API V2 within Android application. I built my own Android implementation for Foursquare API based on my previous  implementation for Twitter API that can be used to post Twitter … [Read more...] about How to Use Foursquare API on Android Application

How to Post Twitter Status from Android

February 26, 2011 by Lorensius Londa 289 Comments

While developing one of my Android application, i found it was hard to find a good and simple tutorial on how to integrate Twitter into Android app.  There are some external java libraries over the net that can be used to integrate Twitter into Android app, but they lack of good documentation and … [Read more...] about How to Post Twitter Status from Android

How to Create QuickAction Dialog in Android

July 12, 2010 by Lorensius Londa 303 Comments

[Update 15/07/2011]I have updated the quickaction implementation code so it can be used more efficient and the dialog will be automatically dismissed after pressing the action item. All the source codes now available via github so you can track the changes.Official Twitter application for Android … [Read more...] about How to Create QuickAction Dialog in Android

How to Create Android Update Zip Package

June 2, 2010 by Lorensius Londa 36 Comments

There are several ways to install applications or  library files to an Android Phone. You can use Market application to find and install or adb command line tool to install or push the files to Android file system. These are all easy to implement for  single  file but if you have several … [Read more...] about How to Create Android Update Zip Package

How to Sign Android APK or Zip Files

May 21, 2010 by Lorensius Londa 54 Comments

When publishing an application or a custom rom  you need to sign the .apk or .zip files with a certificate using a private key. The Android system uses the certificate to identify the author of an application and establish trust relationship between applications. The classic way of doing this was to … [Read more...] about How to Sign Android APK or Zip Files

How to Share Internet Connection Between PC and Android Phone Using WiFi

May 5, 2010 by Lorensius Londa 370 Comments

WiFi Ad-Hoc Networking is a popular method to share internet connection between  computers (pc or laptop) or between a computer and a smartphone that has built in WiFi. Unfortunately, this method of networking is not supported by Android since it was released until the time of this writting. One of … [Read more...] about How to Share Internet Connection Between PC and Android Phone Using WiFi

Samsung I5700 Galaxy Spica Android 2.1 Flashing Guide

April 9, 2010 by Lorensius Londa 1,196 Comments

This is a complete guide to flash (upgrade) your Samsung I5700 Galaxy Spica to Android 2.1 (firmware EXXJCE (March 2010)). I have tested it on my own Spica with firmware version DXIL1 and two of my friends with firmware version DXJA1 and it really worked. You can use this guide to upgrade your Spica … [Read more...] about Samsung I5700 Galaxy Spica Android 2.1 Flashing Guide

How to Setup Android Application Development on Eclipse

March 2, 2010 by Lorensius Londa 57 Comments

Android SDK provides the tools and APIs necessary to begin developing applications on the Android platform using the Java programming language. Android offers a custom plugin for the Eclipse IDE, called Android Development Tools (ADT), that is designed to give you a powerful, integrated environment … [Read more...] about How to Setup Android Application Development on Eclipse

How to Overlay Video Using JQuery Tools and Flowplayer

February 13, 2010 by Lorensius Londa 14 Comments

In my previous tutorial, i've explained the basic usage of Flowplayer as your web video player. In this tutorial, i'll will show you a little bit advanced usage of Flowplayer combined with Jquery Tools. JqueryTools is used to overlay video with a simple apple effect. This feature is usefull when … [Read more...] about How to Overlay Video Using JQuery Tools and Flowplayer

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