ending message to waiting queue

Greetings, I made an app that plays songs based on a user set song start and ending period. That part works perfectly as long as the app is displayed on the phone screen. The app also runs quite well in the background and is not easily killed by Android because it's using the technique used in...

Hi, Ive got an httpserver with images and a text file. My app has a service runing on the background every 30s. It downloads a textfile from my http server, and if it has changed from the previus one, then it pop a notification with the new text. In other words, when I update the content on my...