date:20090917

Send POST data to browser

2009-09-17 Thread Bartosz Białecki

Hi,
I'm new in programming for iPhone and I have a problem. I have a website 
with login form and I want to write a program on iPhone which open this 
website without authentication. I thought to launch a brwoser from my 
application and send a POST data with username and password, but I have 
no idea how to do that.
I can launch browser with url using this code:
NSURL *url = [NSURL URLWithString: @https://www.example.com/index.php;];
[[UIApplication sharedApplication] openURL: url];
but I don't know how to send post data.
 
I tried also another solution: send post data from my application to 
website and then get a response, but then I don't know how to open 
returned page in browser. I used this code:
NSString *postString = [[NSString alloc] 
initWithFormat:@username=%@password=%@, [self urlEncodeValue: 
username], [self urlEncodeValue: password]];
NSData *requestData = [NSData dataWithBytes: [postString UTF8String] 
length: [postString length]];

NSURL *url = [NSURL URLWithString: @https://www.example.com/index.php;];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL: 
url];
   
[request setHTTPMethod: @POST];
[request setValue: @application/x-www-form-urlencoded 
forHTTPHeaderField: @Content-Type];
[request setHTTPBody: requestData];
   
NSURLResponse *response;
NSError *error;
   
NSData *returnData = [NSURLConnection sendSynchronousRequest: request 
returningResponse: response error: error];
   
NSString *dataReturned = [[NSString alloc] initWithData: returnData 
encoding: NSASCIIStringEncoding];
 
I will be appreciate of any help.
 
Best regards
Bartosz Bialecki


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Catch exception in NSArrayController

2009-09-17 Thread Konrad Windszus

I have a classical binding usecase: A NSArrayController is used for  
displaying the columns of a NSTableView. The columns itself therefore  
use the arrangedObject method of the NSArrayController. In the get  
methods of the model itself (which normally return an NSString* which  
should be displayed in the column), there could occur an exception. I  
want to catch that exception in the NSArrayController. I therefore  
subclassed the NSArrayController and overwrote valueForKeyPath with a  
simple:


- (id)valueForKeyPath:(NSString *)keyPath {
try {
[super valueForKeyPath:keyPath];
}
catch (...) {
		// want to get here, if there is an exception thrown within the  
model class

}
}

Unfortunately it is only called with arrangedObjects. At that point no  
exception is thrown yet. Somewhere after that a valueForKeyPath must  
be executed on that returned arrangedObjects. Since I have not  
subclassed this proxy class, I cannot intercept its valueForKeyPath  
method and therefore cannot catch the exception. Is there a simple way  
to catch exceptions in the controller class which is thrown during  
calling a get method (over binding mechanims)?

Thanks for any help.
Konrad
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Fwd: [SOLVED] NSTreeController setSelectionIndexPath depends on sort order

2009-09-17 Thread Konrad Windszus

Just for the record:

I found the solution on the net: http://wilshipley.com/blog/2006/04/pimp-my-code-part-10-whining-about.html
. But instead of going through the whole tree to find an object, I
simply store the complete object hierarchy, so that I only have to
descent to that children, which are also in the requested object
hierarchy. Therefore finding the object is much faster. Since I
operate on content rather than on arrangedObjects I do not have to
mess around with proxy objects. Just be carefull to apply the same
sort order to the contents array.

Hope this will help others with the same problem.
Konrad

Am 25.08.2009 um 19:45 schrieb Konrad Windszus:

I have a NSTreeController which is connected to a NSOutlineView. I
wish to have links to specific entries in the NSTreeController. With
these links I want to select those items. I therefore use the
NSIndexPath. Unfortunately the NSIndexPath becomes invalid if the
sort order is changed by the user.
How can I have links to items in NSTreeController (which I can then
select with the help of the link), which are independent of the sort
order?

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