連線到含有中文的網址

//要把整個網址轉碼成UTF8的格式，降子在eventLocationTextField輸入中文到網址中才不會錯 - (IBAction)callWebMap:(id)sender {

 NSString* txt = [[NSString alloc] initWithString:self.eventLocationTextField.text];
 NSString* query = [NSString stringWithFormat:@"http://maps.apple.com/maps?q=%@",txt]; 
NSString* strUrl = [query stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 
NSURL* url = [NSURL URLWithString:strUrl]; [[UIApplication sharedApplication] openURL:url]; 
[txt release];
 [query release];
 [strUrl release];
 [url release];

}