Databases
StackOverflow2013
Postsdbo
POScrollView In Page Controller
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POScrollView In Page Controller
    primarykey
    data
    text
    <p>I try to make an Image Gallery that supports zoom abilities. I choose to place every image into a scrollView of a ViewController that is used as a page of PageController. This is the initial pic of ViewController.</p> <p><img src="https://i.stack.imgur.com/LcxBy.png" alt="initial"></p> <p>When i zoom in the result is fine too.</p> <p><img src="https://i.stack.imgur.com/tqq8i.png" alt="zoom in picture"></p> <p>Although, if i zoom in and change one page and get back ,controller has a bad behaviour. It seems that something is remaining from the previous action into scrollView and i cannot find what.The image below is the false.</p> <p><img src="https://i.stack.imgur.com/t2WQz.png" alt="false image"></p> <p>I want to have the initial view again(Pic1)</p> <p>These methods handle the events.</p> <pre><code>- (void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; self.imageView = [[UIImageView alloc] initWithImage:image]; CGRect lala=(CGRect){.origin=CGPointMake(0.0f, 0.0f), .size=image.size}; [self.imageView setFrame:lala]; //[self.scrollView setFrame:CGRectMake(0, 65, 320, 520)]; [self.scrollView addSubview:self.imageView]; self.imageView.userInteractionEnabled=YES; // Tell the scroll view the size of the contents [self.scrollView setContentSize: image.size]; // Set up the minimum &amp; maximum zoom scales CGRect scrollViewFrame = self.scrollView.frame; CGFloat scaleWidth = scrollViewFrame.size.width / self.scrollView.contentSize.width; CGFloat scaleHeight = scrollViewFrame.size.height / self.scrollView.contentSize.height; CGFloat minScale = MIN(scaleWidth, scaleHeight); self.scrollView.minimumZoomScale = minScale; self.scrollView.maximumZoomScale = 1.0f; self.scrollView.zoomScale = minScale; //[self.scrollView setFrame:self.imageView.frame]; [self.scrollView setFrame:CGRectMake(0, 65, 320, 500)]; [self centerScrollViewContents]; } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; NSLog(@"Will"); self.imageView = [[UIImageView alloc] initWithImage:image]; //self.scrollView=[[UIScrollView alloc] init]; CGRect lala=(CGRect){.origin=CGPointMake(0.0f, 0.0f), .size=image.size}; [self.imageView setFrame:lala]; [self.scrollView setFrame:CGRectMake(0, 65, 320, 500)]; //[self.scrollView setFrame:self.imageView.frame]; //[self.scrollView addSubview:self.imageView]; self.imageView.userInteractionEnabled=YES; // Tell the scroll view the size of the contents [self.scrollView setContentSize: image.size]; } - (void)centerScrollViewContents { CGSize boundsSize = self.scrollView.bounds.size; CGRect contentsFrame = self.imageView.frame; if (contentsFrame.size.width &lt; boundsSize.width) { contentsFrame.origin.x = (boundsSize.width - contentsFrame.size.width) / 2.0f; } else { contentsFrame.origin.x = 0.0f; } if (contentsFrame.size.height &lt; boundsSize.height) { contentsFrame.origin.y = (boundsSize.height - contentsFrame.size.height) / 2.0f; } else { contentsFrame.origin.y = 0.0f; } self.imageView.frame = contentsFrame;} </code></pre>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. UShoya21
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POScrollView In Page Controller
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POScrollView In Page Controller
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload