Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p><code>UIScrollView</code> has the method <code>setContentOffset:animated:</code> which would allow you to scroll to a particular point in your content. To figure out what the appropriate offset is, you would have to determine the width of the portion of your attributed string prior to the highlighted part. The documentation for the methods you use to do this <a href="http://developer.apple.com/library/ios/documentation/uikit/reference/NSAttributedString_UIKit_Additions/Reference/Reference.html" rel="nofollow">can be found here</a>. You could do this using the <code>size</code> method of <code>NSAttributedString</code>.</p> <p>It would look something like this:</p> <pre><code>@interface SomeViewController : UIViewController @end @implementation SomeViewController { UIScrollView* _scrollView; } - (void)scrollToOffset:(NSInteger)offset inAttributedString:(NSAttributedString*)attributedString { NSAttributedString* attributedSubstring = [attributedString attributedSubstringFromRange:NSMakeRange(0, offset)]; CGFloat width = attributedSubstring.size.width; [_scrollView setContentOffset:CGPointMake(width, 0.0f) animated:YES]; } @end </code></pre> <p>The above code assumes that we're talking about a single line of text and that scrolls horizontally. Alternatively to do this for a fixed width that wraps to an arbitrary height you would need to calculate height with the following code (rather than attributedSubstring.size.height) and then possibly subtract a little to account for wanting to show the last line that of the substring:</p> <pre><code> CGFloat height = [attributedSubstring boundingRectWithSize:CGSizeMake(&lt;#fixed width to wrap at#&gt;, HUGE_VALF) options:NSStringDrawingUsesLineFragmentOrigin context:nil].size.height; [_scrollView setContentOffset:CGPointMake(0.0f, height) animated:YES]; </code></pre> <p>This is similar to code I use when determining the height of table or collection view cells that have dynamic text that I need to accommodate.</p>
    singulars
    1. This table or related slice is empty.
    1. POHow to scroll to specific portion of an attributed string
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCharles A.
    1. USCharles A.
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POHow to scroll to specific portion of an attributed string
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COSo that width size is an element of how large the UI component ends up being after all the text (of whatever size and font, etc) is rendered onto the screen?
      singulars
      1. PO
      1. USdtmland
    2. CO@dtmland Yes, the width variable should be the width of the substring when it is rendered, assuming that it is rendered. It's probably worth noting that I'm assuming you don't have vertical scrolling, just horizontal (which is why the contentOffset value I'm setting has a y value of 0.0f).
      singulars
      1. PO
      1. USCharles A.
    3. COI ended up trying to use the height instead of the width. Strangely, the attributedSubstring.size.height value never appears to take into account when the text lines wrap in the scroll view. I always get the same height no matter what - the only way to affect the height is to adjust the font size.
      singulars
      1. PO
      1. USdtmland
 

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