Important note : As an update to this article, I’ve prepared a new post entitled Improved Twitter OAuth for Android focussing on a more simple Oauth / Android experience, and using the Google APIs Client Library for Java.
The goal of this article is to get twitter integration up & running from your Android app in 30 minutes. The guide will show you how to
- setup a twitter test account
- register a twitter application
- authenticate the user in your Android application.
- have the user send tweets from your Android application.
This guide is accompanied by a sample application that’s available in Github in the AndroidTwitterSample repository. To import this project in Eclipse, I suggest using the EGit plugin that can be installed via the Main P2 Repository located at http://download.eclipse.org/egit/updates.
Before running this project, make sure you change the com.ecs.android.sample.twitter.Constants file to include your consumer key and consumer secret. (see subsequent section).
Once you have sample application up & running, you can copy the relevant classes into your projects to have Twitter up & running.
Twitter uses the OAuth protocol to authorize your android application to send tweets on behalf of the end-user. The end-user will need to authenticate against Twitter (meaning that your application will not capture the twitter username / password). Once the user has authorized access, you’ll be able to send tweets on behalf of the user. We’ll use signpost library to handle the OAuth communication, and the Twitter4J library to handle the Twitter specific interactions (sending tweets).
Continue reading “A 30 minute guide to integrating Twitter in your Android application.” »
|Google Latitude is a free service from Google that allows you to share your current location with a selected number of your Google contacts. It also allows you to record your past location changes, and provides you with a dashboard view of your recently visited places. Google Latitude can be used from either a desktop application, or from your mobile phone. Google Latitude is well integrated in most Android phones. Through an extension on the Google Maps application, integration with Latitude is seamless. However, there are a couple of features that are missing in Google Latitude on Android phones, and that’s where Latify tries to fill in the gap.
Latify is an Android client for Google Latitude. With Latify, you can continuously update your current position when on the move or stationary. Even when you’re not online, Latify can sync up your location movements with Google Latitude once back online. Latify can be configured to update your location based on GPS positioning, even when running in the background. It also allows you to view and manipulate your history location stored at the Google Latitude servers. Latify uses OAuth for secure authorization and does not capture your password when logging into Google. All you need is a Google account, and a Latitude setup and you’re ready to go.
Included below are some of the Latify features
- Record and sync your location changes in real-time to Google Latitude.
- No need to have Latify running in the front.
- Visualize & replay your location history on a map
- Remove incorrect / redundant history entries
- Re-publish your last known location at user-defined intervals when no GPS signal is available
- Configure Latify to send an update of your last known location every minute, half hour , hour ,
- Store your location updates on your phone without sending them to Latitude in realtime.
- Push your location updates in one shot to Latitude (ex: when a WIFI connection is available)
Continue reading “Latify – a feature-rich Google Latitude client” »
|In order to use Google Maps in an Android application, you need to make sure that the application is properly setup to be able to host a MapView.
Although it only takes a couple of steps to prepare your application for using Google Maps, failing to complete or skipping one of these steps can quickly turn this into an error-prone process.
The goal of this article is to go over the required steps in order to use Google Maps, and to list down the common mistakes that result in errors.
Continue reading “Using Google Maps in your Android Application” »
|Managing dependencies is very important in software development. The ability to declare your dependencies, handle transitive dependencies, and fetch these dependencies automatically is one of the benefits of using Maven. Today I installed Ubuntu on my laptop, and started checking out my Android projects from my GitHub repository.
During that checkout, I was ashamed to find that some of them had external dependencies declared that couldn’t be found on my newly installed system.The dependencies were pointing to a location on the desktop of the machine where I did the check-in. Shame on me.
One of the strenghts of maven2 is that by declaring the dependencies in the pom.xml, anyone checking out the pom will automatically have all of it’s dependencies resolved.
Having a JEE background, where maven2 is heavily used in my everyday working environment, I wondered if it was possible to combine maven2 with my Android projects, and came accross 3 interesing projects that make it possible.
The goal of this article is to provide you with a step-by-step guide to glue everything together, and start developing your Android apps in Eclipse using Maven2.
Continue reading “Integrating maven in your Android Eclipse projects” »
|Most people that are developing Android applications using Eclipse will probably use the Eclipse ADT plugin. The plugin offers a lot of functionality, including
- Debugging features, via it’s integration with the Dalvik Debug Monitor Server (DDMS)
- Emulator control from the Eclipse workspace
- XML Validation for Android specific files (strings, views, menus , ….)
- Project Wizards, to facilitate the creation and packaging of your Android app
In this short article, we’ll be discussing the debugging of remote android processes (the processes defined in your manifest using the android:remote attribute).
Continue reading “Debug a remote Android process in Eclipse” »
|ProgressDialogs in Android are easy. At least, that was my initial thought. As long as you don’t change the screen orientation that is. Once you start moving your phone around after – or worse, during – an active progress dialog, you’ll soon find that out that your application isn’t behaving the way it should.
Luckily for us, there are several ways to tackle this.I’ve created a sample application, available on GitHub outlining the problem, and some solutions of dealing with it gracefully. The repository is located here.
Continue reading “Handling progress dialogs and orientation changes” »
|Just thought I’d share a small post on creating github repositories using the command line.
If you want to create a repository through the commandline (CLI), you can use the following command from the GIT bash :
Continue reading “Creating github repositories with command line” »