ios - UIScrollView + PageControl -

i have view controller outlets of scrollview (initial size: 390, 170) , page control. need display image per page array. have unexpected result (see image below).

images not full-width , after 2nd page scrollview ends.

here code

- (void)viewdidload {     [super viewdidload];     //put names of our image files in our array.     imagearray = [[nsarray alloc] initwithobjects:@"header1.jpg", @"header2.jpg", @"header3.jpg", nil];     [self.articlespagecontroll setnumberofpages:imagearray.count];     (int = 0; < [imagearray count]; i++) {         //we'll create imageview object in every 'page' of our scrollview.         cgrect frame;         frame.origin.x = 390 * i;         frame.origin.y = 0;         frame.size = self.articlesscrollview.frame.size;          uiimageview *imageview = [[uiimageview alloc] initwithframe:frame];         [imageview setcontentmode:uiviewcontentmodescaletofill];         imageview.image = [uiimage imagenamed:[imagearray objectatindex:i]];         [self.articlesscrollview addsubview:imageview];     }     //set content size of our scrollview according total width of our imageview objects.     self.articlesscrollview.contentsize = cgsizemake(self.articlesscrollview.frame.size.width * [imagearray count], 170);  }  - (void)scrollviewdidscroll:(uiscrollview *)sender {     // update page when more 50% of previous/next page visible     cgfloat pagewidth = self.articlesscrollview.frame.size.width;     int page = floor((self.articlesscrollview.contentoffset.x - pagewidth / 2) / pagewidth) + 1;     self.articlespagecontroll.currentpage = page; } 

upd: 3rd page image exists, it's impossible scroll page

thanks in advance!

solution self.articlesscrollview.contentsize = cgsizemake(390 * [imagearray count], 170);