Google Translate API on iPhone - ios

Question

I am writing a simple code, in which I am using Google API for translation services, but I am getting the following error:
Connection failed: Error Domain=NSURLErrorDomain Code=-1000 "bad URL" UserInfo=0x176c80a0 {NSUnderlyingError=0x175c8d00 "bad URL", NSLocalizedDescription=bad URL}
This is the code I have written:
#import "ViewController.h"
#import"SBJson.h"
#interface ViewController ()
#property (strong, nonatomic) IBOutlet UITextField *textfield;
#property (strong, nonatomic) IBOutlet UIButton *go;
#property (strong, nonatomic) IBOutlet UITextView *textview;
- (IBAction)translate:(id)sender;
#property (strong, nonatomic) NSMutableArray *translations;
#property (strong, nonatomic)NSString *_lastText;
#property (nonatomic, copy) NSString * lastText;
#end
#implementation ViewController
#synthesize lastText = _lastText;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//Initializing the translation array
_translations = [[NSMutableArray alloc] init];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)performTranslation {
responseData = [[NSMutableData data] init ];
NSString *langString = #"en|ja";
NSString *textEscaped = [_lastText
stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *langStringEscaped = [langString
stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
//My_Key=Google generated key
NSString *url = [NSString stringWithFormat:#"https://www.googleapis.com/language/translate/v2?
key={My_key}&source=en&target=de&q=%#",textEscaped];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url]];
[[NSURLConnection alloc] initWithRequest:request delegate:self];
}
- (IBAction)translate:(id)sender {
[_translations removeAllObjects];
[_textfield resignFirstResponder];
_go.enabled=NO;
self.lastText = _textfield.text;
[_translations addObject:_lastText];
_textview.text = _lastText;
[self performTranslation];
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
[responseData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[responseData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
_textview.text = [NSString stringWithFormat:#"Connection failed: %#", [error description]];
_go.enabled = YES;
NSLog([NSString stringWithFormat:#"Connection failed: %#", [error description]]);
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSString *responseString = [[NSString alloc] initWithData:responseData
encoding:NSUTF8StringEncoding];
NSMutableDictionary *luckyNumbers = [responseString JSONValue];
if (luckyNumbers != nil) {
NSDecimalNumber * responseStatus = [luckyNumbers objectForKey:#"responseStatus"];
if ([responseStatus intValue] != 200) {
_go.enabled = YES;
return;
}
NSMutableDictionary *responseDataDict = [luckyNumbers objectForKey:#"responseData"];
if (responseDataDict != nil) {
NSString *translatedText = [responseDataDict objectForKey:#"translatedText"];
[_translations addObject:translatedText];
self.lastText = translatedText;
_textview.text = [_textview.text stringByAppendingFormat:#"\n%#", translatedText];
_go.enabled = YES;
}
}
}
#end

Answer 1

The problem is like it says. The URL has been generated incorrectly. Try:
NSString * source = #"en";
NSString * target = #"ja";
NSString * key = #"YOUR-KEY";
NSString * url = [NSString stringWithFormat:#"https://www.googleapis.com/language/translate/v2?key=%#&source=%#&target=%#",key,source,target];
and see what response you get.

Answer 2

You can just use FGTranslator. Simple.
FGTranslator *translator = [[FGTranslator alloc] initWithGoogleAPIKey:#"your_google_key"];
[translator translateText:#"Bonjour!"
completion:^(NSError *error, NSString *translated, NSString *sourceLanguage)
{
if (error)
NSLog(#"translation failed with error: %#", error);
else
NSLog(#"translated from %#: %#", sourceLanguage, translated);
}];