iOS 8.3鍵盤通知不起作用

這是我寫的鍵盤通知的代碼。下面的代碼適用於iOS 8.1 SDK。但是keyboardWasShown：和keyboardWillBeHidden的通知：在iOS 8.3設備中沒有收到。與iOS 8.3 sdk問題？iOS 8.3鍵盤通知不起作用

- (void)registerForKeyboardNotifications { 

    [[NSNotificationCenter defaultCenter] addObserver:self 
              selector:@selector(keyboardWasShown:) 
               name:UIKeyboardWillShowNotification object:nil]; 

    [[NSNotificationCenter defaultCenter] addObserver:self 
              selector:@selector(keyboardWillBeHidden:) 
               name:UIKeyboardWillHideNotification object:nil]; 

} 

- (void)keyboardWasShown:(NSNotification*)aNotification { 
} 


- (void)keyboardWillBeHidden:(NSNotification*)aNotification{ 
}

來源

2015-06-22 vijithdaniel

從哪裏調用方法registerForKeyboardNotifications？ –

來自爲視圖控制器編寫的基類。正在調用registerForKeyboardNotifications函數，僅在iOS 8.3 – vijithdaniel

嘗試將其添加到viewDidLoad –