Using multiple icons at the same time

[MIst3rM]

Hi, I am using the icons in an app that I am making for school and whenever I want to display 5 at the same time for a weather 5 day forecast feature I start getting messages from the debugger saying too many tasks running on the Main UI and it starts skipping frames. I use an asynctask to get the information from the api and I display these icons in the postExecute(). Is there a way of having all of it run in the background?