现在的UIPopoverController在相同的位置，只改变箭头的偏移量。

My goal is to keep same coordinates for a UIPopoverController with just changing arrow offset. So basically i have three buttons touching each of them shows up a popover. When presenting this popover it changes position on the screen, but i do not want that. To be more clear look at screenoshots:My goal is to keep same coordinates for a UIPop