iOS swift 输入框(UITextField)密码明暗文切换

@objc func passwordBtnClick(){passwordBtn.isSelected = !passwordBtn.isSelectedpa
@objc func passwordBtnClick(){passwordBtn.isSelected = !passwordBtn.isSelectedpasswordTextField.isSecureTextEntry =  !passwordTextField.isSecureTextEntry}

参考博客:
iOS 输入框(UITextField)密码明暗文切换 - 简书