Re: (Newbie) Have Tips on Loading Remote Dictionary?
Re: (Newbie) Have Tips on Loading Remote Dictionary?
- Subject: Re: (Newbie) Have Tips on Loading Remote Dictionary?
- From: Ryan Britton <email@hidden>
- Date: Fri, 10 Mar 2006 17:13:15 -0800
You have to notify the observers that you're updating the values.
Basically, you call [self willChangeValueForKey:@"someKey"], perform
the actual changes, then call [self
didChangeValueForKey:@"someKey"]. You can call any number of these
you want as long as they're in matched pairs. So, in your example,
you could call all the willChangeValueForKey:, load your dictionary,
then call all the didChangeValueForKey:
http://developer.apple.com/documentation/Cocoa/Reference/Foundation/
ObjC_classic/Protocols/NSKeyValueObserving.html
For interface items, make sure you run these on the main thread or
you'll get weird results though.
On Mar 10, 2006, at 5:03 PM, Peter Sampson wrote:
Hello,
I'm running some tests and trying to figure out how to load data
from a plist from a remote location (without NSCoder or Archiving).
I've been using code samples found around the web (specifically
Scott Stevenson's sites) to try and get it working -- some of you
will no doubt recognize it.
I want to load a PLIST from a URL and then get the values into
ivars for KVC/Bindings.
The code below will load the data and parse it into a dictionary.
But, it doesn't appear to set the values and update the interface.
All getter/setter methods are working and setup, and "continually
updates values" is also checked for bindings on the interface.
@implementation MainObject
- (void) awakeFromNib
{
[NSApp setDelegate: self];
[self loadDataFromDisk];
}
- (void) loadDataFromDisk
{
NSDictionary * inputValues;
MainObject * person = [[MainObject alloc] init];
NSURL * myURL;
myURL = [NSURL URLWithString: @"http://www.kobry.com/eg.plist";];
NSDictionary * contents;
contents = [NSDictionary dictionaryWithContentsOfURL: myURL];
NSLog(@"%@", contents);
[person setValuesForKeysWithDictionary: inputValues];
}
Thanks for your help!
Cheers,
Peter Sampson
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