iOS：在地图上绘制MKTileOveraly会导致CPU使用率升高和内存增加。我找不到原因。

Question

i'm trying to add MKTileOverlay on map. when i start loading tile by fetching it from server, CPU usage suddenly increases. again on doing some action like zoom in zoom out or scrolling map cpu usage increases upto 200% whats the reason.?

Answer 1

You might be allocating some objects continuously. You can use instrument to check allocations in your app.