iOS 鍵盤彈出與回收、界面上移和下移

//添加通知，來控制鍵盤和輸入框的位置ide     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardWillShowNotification object:nil];//鍵盤的彈出spa     [[NSNotificationC

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