objective c - UIScrollView change subview position -

i have uiscrollview resized depending on context. subviews repositioned based on context.

when loads, goes fine. but, when touch scrollview, subviews go original position.

that messes layout.

i specified:

self.automaticallyadjustsscrollviewinsets = no; 

without result.

does know why?

here code position subview , resize scrollview. btnsave button goes it's original position when scroll.

float more = 0; float height = 900;  if (is_iphone_6) {     height = 1050; } else if (is_iphone_6p) {     more = 200;     height = 1100; }  status = [avcapturedevice authorizationstatusformediatype:avmediatypevideo];  if (appdelegate.driverfisrtname != nil && ![appdelegate.driverplateimage isequaltostring:@""]) {     height = 1300;     self.scrollview.contentsize = cgsizemake(self.view.frame.size.width, height);     self.btnsave.frame = cgrectmake(self.btnsave.frame.origin.x,                                     self.btnsave.frame.origin.y - more,                                     self.btnsave.frame.size.width,                                     self.btnsave.frame.size.height); } else {     self.scrollview.contentsize = cgsizemake(self.view.frame.size.width, height); }