calendar isnt starting pending intent android studio

My first MQTT sample (which did everything in an Activity) was totally unreliable. It doesn’t matter if you kick off background threads as they’ll be killed off, too. Because it will be killed soon, without much warning. Don’t make them do any long-running heavy lifting.ĭon’t put any of the MQTT stuff into your Activity. The point is – Activities are short-lived. If you rotate the phone while the app is running, the Activity is trashed and a new one is started to implement the GUI in the new orientation. When you switch to another app or close the app, the Activity is trashed. Only one Activity runs on the phone at a time – the app the user is using. When you’re writing an Android GUI, you extend Activity. The most obvious screw-up in my first attempt was not realising the difference between Activities and Services. Hopefully the comments in it are clear enough, but here are a few of the key points. (Note that I’m using the Java J2EE client library from ibm.com). I’ve put the full source for a sample implementation below.

So it’s about time that I share something more useful. Well… if not properly, at least a little better.īut Google is still directing people to my old, and probably unhelpful, sample. I’ve since written other Android MQTT apps, such as a hackday app for pushing updates from websites to your phone and learnt a lot about how to do it properly. However, it was the first time I’d ever done Android development, and while it was an okay Java MQTT sample, it was a poor Android sample – I didn’t know anything about how Android works as a platform.

When I wrote that, I gave an example Android project.

I’ve written before about MQTT as a technology for doing push notifications to mobile.

How to receive push notifications using MQTT in an Android mobile application

Calendar isnt starting pending intent android studio