UITextField and NSURL URLWithString - iphone

Question

I have built a translate application in ios. The application uses the Yandex translation api. I followed this tutorial: http://www.raywenderlich.com/5492/working-with-json-in-ios-5
My ViewController.m looks like this (I took out my api key):
#define kBgQueue dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) //1
#import "ViewController.h"
#end
#interface NSDictionary(JSONCategories)
+(NSDictionary*)dictionaryWithContentsOfJSONURLString:(NSString*)urlAddress;
-(NSData*)toJSON;
#end
#implementation NSDictionary(JSONCategories)
+(NSDictionary*)dictionaryWithContentsOfJSONURLString:(NSString*)urlAddress
{
NSData* data = [NSData dataWithContentsOfURL: [NSURL URLWithString: urlAddress] ];
__autoreleasing NSError* error = nil;
id result = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
if (error != nil) return nil;
return result;
}
-(NSData*)toJSON
{
NSError* error = nil;
id result = [NSJSONSerialization dataWithJSONObject:self options:kNilOptions error:&error];
if (error != nil) return nil;
return result;
}
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
dispatch_async(kBgQueue, ^{
// NSData* data = [[NSData dataWithContentsOfURL: TranslateText] ];
NSData*data = [NSURL URLWithString: [NSString stringWithFormat: #"https://translate.yandex.net/api/v1.5/tr.json/translate?key=apikeys&lang=en-es&text=%#", textfield.text]];
[self performSelectorOnMainThread:#selector(fetchedData:) withObject:data waitUntilDone:YES];
});
}
- (void)fetchedData:(NSData *)responseData {
//parse out the json data
NSError* error;
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:responseData //1
options:kNilOptions
error:&error];
NSArray* TranslatedText = [json objectForKey:#"text"]; //2
NSLog(#"Text that was translated: %#", TranslatedText); //3
// 1) Get the latest loan
//NSDictionary* ttext = [TranslatedText objectAtIndex:0];
NSString* ttext = [TranslatedText objectAtIndex:0];
// 3) Set the label appropriately
humanReadble.text = [NSString stringWithFormat:#"%#",
//[ttext objectForKey:#"name"],
ttext];
}
#end`
When I run the app, I get the error Thread 1: signal SIGABRT on this line of code:
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
What should I do?

Answer 1

The error in your code is the use of the colon there. You should have the line be...
[NSURL URLWithString: [NSString stringWithFormat: #"https://translate.yandex.net/api/v1.5/tr.json/translate?apikeyes&text=%#", textfield.text];
Also, I do not know why you would do a #define. Grab the information in the method for handling the button getting pressed.
NSURL * translateURL = [NSURL URLWithString: [NSString stringWithFormat: #"https://translate.yandex.net/api/v1.5/tr.json/translate?apikeyes&text=%#", textfield.text];