如何獲取uitextfield的鍵盤語言環境

Question

我在視圖控制器上有一個uitextfield對象。用戶可以使用任何鍵盤語言輸入任何文本。

問題是：如何通過用戶選擇的鍵盤獲取uitextfield內的輸入文本的語言ID？

Answer 1

以上iOS7.0

- (void)textFieldDidEndEditing:(UITextField *)textField { 
NSString *primaryLanguageId = textField.textInputMode.primaryLanguage; 
} 

iOS7.0及以下

- (void)textFieldDidEndEditing:(UITextField *)textField { 
NSString *primaryLanguageId = [UITextInputMode currentInputMode].primaryLanguage; 
} 

Answer 2

只要您在使用[UITextInputMode currentInputMode].primaryLanguage獲得的launguage代碼字符串，但也必須添加觀察者，因爲如果鍵盤launguage是然後這個觀察者通知語言改變。

Objective-C的：

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    [[NSNotificationCenter defaultCenter] addObserver:self 
              selector:@selector(changeInputMode:) 
               name:UITextInputCurrentInputModeDidChangeNotification object:nil];} 
} 

//This method prints the currently selected input language (like "en_US" or "de_DE"): 

-(void)changeInputMode:(NSNotification *)notification 
{ 
    NSString *inputMethod = [[UITextInputMode currentInputMode] primaryLanguage]; 
    NSLog(@"inputMethod=%@",inputMethod); 
} 

夫特：

class ViewController: UIViewController 
{ 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     NSNotificationCenter.defaultCenter().addObserver(self, 
                 selector: "changeInputMode:", 
                 name: UITextInputCurrentInputModeDidChangeNotification, object: nil) 
    } 

    func changeInputMode(notification : NSNotification) 
    { 
     let inputMethod = UITextInputMode.currentInputMode().primaryLanguage 
     println("inputMethod: \(inputMethod)") 
    } 


}