打开苹果地图时，为什么“因内存压力而终止”？

I am making an app where the user can open apple maps to get directions, The app works perfect on the simulator but when I run It on my iphone 4s (plunged in the computer) and open apple maps via my app my computer shows me "Terminated due to Memory Pressure" , the app still works but I am worried about getting rejected by apple when I submit my app, is this something I should worry about , or is there a way of solving the problem ? I posted my code below in case there is an issue with itI am making an app where the user can open appl