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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Mobile Development’ Category

CodeRage 9 Q&A: Android Push Notifications (Jeff Lefebvre)

Posted by jpluimers on 2014/10/30


CodeRage 9 Files!

This year I presented Push notifications with Android. Here are the files mentioned in the session!


Android Push Notifications

Want to send push notifications to your clients or employees? This session goes over setting up GCM, installing push notifications into your application, and calling GCM to push those messages to your app.

Level: Intermediate
Jeff Lefebvre


Read the rest of this entry »

Posted in Delphi, Software Development, Development, Power User, Mobile Development, Android, Android, Appmethod, Delphi XE7 | Tagged: , | 1 Comment »

Android Wear Check

Posted by jpluimers on 2014/09/11


Android Wear is designed to work with Android phones running 4.3 or higher. Not sure what version of Android you have? Visit on your phone to see if it’s compatible with Android Wear.

My Google Nexus 4: check!


via: Android Wear Check.

Posted in Android, Android, AndroidWear, Development, Google, Mobile Development, Power User | Leave a Comment »

Designer’s guide to DPI

Posted by jpluimers on 2014/08/15

Designer’s guide to DPI.

On retina, Hi-DPI, Android, iOS, scaling, DP, SP, etc.


Posted in Android, Development, iOS Development, Mobile Development, Software Development, User Experience, Windows Phone Development | Leave a Comment »

Great Android Activity/Fragment lifecycle chart (Steve Pomeroy – Google+)

Posted by jpluimers on 2014/04/16

Thanks a lot Steve Pomeroy! And shame on me for finding out (through Michael Panzer, thanks for your notification) this chart only today (he published this chart on 2013-08-20).

Steve’s quote on it:

After struggling with trying to figure out how various pieces fit together, I’ve done some research and put together the complete Android Activity/Fragment lifecycle chart. This has two parallel lifecycles (activities and fragments) which are organized vertically by time. Lifecycle stages will occur in the vertical order in which they’re displayed, across activities and fragments. In this way, you can see how your fragments interact with your activities.

In addition to the attached image, I’ve also got an SVG: which is suitable for printing.

If this is missing lifecycle steps or is inaccurate in any way, let me know so I can update it!

Note: there is also a large bitmap of the chart.

–jeroen         Read the rest of this entry »

Posted in Android, Development, Mobile Development, Software Development | Leave a Comment »

Android: “R cannot be resolved to a variable” What is R? Why is it so Cryptic? (via: Stack Overflow)

Posted by jpluimers on 2014/04/03

If I ever get “R cannot be resolved to a variable” in an Android project again, then I should read these posts:

One of the quotes was the culprit:

*Note: Eclipse sometimes likes to add an “import android.R” statement at the top of your files that use resources, especially when you ask Eclipse to sort or otherwise manage imports. This will cause your make to break. Look out for these erroneous import statements and delete them.*


Posted in Android, Development, Mobile Development, Software Development | Leave a Comment »


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