Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>The tip with <code>shouldRasterize</code> is a valid one, though from my experience this decreases the quality of the graphic significantly. Also, since like iOS4.3 or so (can't remember anymore) they enormously improved the <code>cornerRadius</code> call, it's a very long time since I last needed to activate rasterizing for this kind of problem. You could always deactivate <code>cornerRadius</code> and see how it performs.</p> <p>What I really want to tell you however is that ASIHTTPRequest has built-in cache support, see</p> <p><a href="http://allseeing-i.com/ASIHTTPRequest/How-to-use#using_a_download_cache" rel="nofollow">http://allseeing-i.com/ASIHTTPRequest/How-to-use#using_a_download_cache</a></p> <p>Try it, it worked flawlessly for me. Think about what cache policies fit your needs best. Of course, if you need the images in CoreData you'll have to insert them, but I wouldn't try to cache them manually from CoreData.</p> <p>Oh and something else ... ASIHTTPRequest is not under development anymore, you might want to consider switching to another framework (like AFNetworking). ASIHTTPRequest e.g. doesn't support ARC.</p>
    singulars
    1. This table or related slice is empty.
    1. POUIImageView performance within UITableViewCell using ASIHTTPRequest
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USJiaYow
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POUIImageView performance within UITableViewCell using ASIHTTPRequest
      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. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COThis is really great information. I honestly didn't know ASIHTTPRequest was not under development. I'm definitely going to have to change up my framework after the first version of my app. As for the caching, I have a global download cache set, but it's only marginally helping. The bulk of the issue rests with the time it takes to actually render the UIImage in the UITableViewCell.
      singulars
      1. PO
      1. USMichael D.
    2. COYep, because you're always initializing the UIImage with `imageWithData:`. Scrolling does lazy loading, therefore every time a cell becomes visible, you call `imageWithData:` again. That's very inefficient. So, you can either use ASIHTTPRequest's cache which stores the image itself (not the NSData) for you, or you can cache the actual UIImage objects. If you really need to create every image anew every time the user scrolls (which I doubt) you can use ElJay's answer with GCD.
      singulars
      1. PO
      1. USJiaYow
    3. COI think that I need to cache the actual UIImage objects in this case. When I leave it up to ASIHTTPRequest, there's a slight delay in loading the image, which is unacceptable. The scrolling speeds up tremendously, but the view is worse. However, when I modify ElJay's approach to store NSData in my model, there's no image loading, but still some lag. Now I know that's because there's overhead associated with imageWithData. What I'm going to do is store the UIImage in my Core Data model so I don't have to keep calling imageWithData.
      singulars
      1. PO
      1. USMichael D.
 

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