Showing various images in a scroll view

imageScrollView

 self.scrollView.pagingEnabled = YES; // making the image can scroll one by one
+    for(NSInteger i = 0; i < self.imageURL.count;i++){ //doing several loop to add the image on the scroll view
+        
+        CGFloat xOrigin = i * self.view.frame.size.width;
+        UIImageView *awesomeView = [[UIImageView alloc] initWithFrame:CGRectMake(xOrigin, 0, self.view.frame.size.width, self.view.frame.size.height-90)];
+        [awesomeView setImageWithURL:self.imageURL[i][@"2x"]];
+        [self.scrollView addSubview:awesomeView];
+    }
+    
+    [self.scrollView setContentOffset:CGPointMake([self.tag integerValue] * self.view.frame.size.width, 0) animated:NO];//set offset-- which means the first image show- basing on the width and do calculation
+    self.scrollView.contentSize = CGSizeMake(self.view.frame.size.width * self.imageURL.count, 1); //the overall scrollview size
+    [self.view addSubview:self.scrollView];//add the scroll view into the view.