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我有一个片段 (A)，其中有 3 个操作可用。当用户选择一项操作时，在此之前，我需要询问他用于登录的密码。我想使用 BottomSheetDialogFragment 来做到这一点，但如果输入的密码正确，我不知道如何让片段 A 监听。

这是 BottomSheetDialogFragment 的代码

class ConfirmPasswordBottomSheet : BottomSheetDialogFragment() {

    companion object {
        const val TAG = "ConfirmPasswordBottomSheet"
    }

    fun newInstance(): ConfirmPasswordBottomSheet {
        return ConfirmPasswordBottomSheet()
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setStyle(STYLE_NORMAL, R.style.CartissimaSheetDialogTheme)
    }

    @Inject
    lateinit var sharedPreferences: SharedPreferences

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.bottom_confirm_pwd, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        showKeyboard()

        confirm_pwd_btn.setOnClickListener {
            if(DesEncrypted().encrypt(confirm_pwd_edit.text.toString()) == ServiceUtils.getPassword(sharedPreferences)){

                }
            }else{
                with(requireActivity() as MainActivity) {
                    buildAlertMessageOneButton(
                        getString(R.string.common_warning),
                        getString(R.string.incorrect_password),
                        getString(R.string.common_close)
                    )
                }
            }
        }
    }
}

这是片段A中我需要检查密码的地方（在2个if之间）

        show_pin_btn_float.setOnClickListener {

            if (with(activity as MainActivity) { checkCardPermission(PinOptionFragment.card.authorities[AuthoritiesCardEnum.CARTE_VIEW_PIN]!!) }) {
                if (card.driverPin) {
                    cardViewModel.requestPinDriver(with(activity as MainActivity) { currentUser.mainCode })
                } else {
                    cardViewModel.requestPin(card.pan)
                }
            }
        }
4

2 回答 2

1

将接口与方法一起使用

public interface PasswordCheck {
 fun isSuccess(password : Boolean);
}

在底部工作表构造函数中传递接口。

然后像这样在你的片段中调用它：

val callback = object : PasswordCheck {
        override fun isSuccess(password : Boolean) {
             if(password){
               //do what you want
             }
        }
    }
于 2021-01-26T11:58:19.573 回答
1

您必须为此任务使用接口。下面根据您提供的代码给出了一个简单的用例。

首先创建一个监听器，ConfirmPasswordBottomSheet如下所示：

class ConfirmPasswordBottomSheet : BottomSheetDialogFragment() {

    private lateinit var listener: OnActionCompleteListener

    fun setOnActionCompleteListener(listener: OnActionCompleteListener) {
        this.listener = listener
    }
    
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        
        // your other code here
        confirm_pwd_btn.setOnClickListener {
            // pass the value of password here

            listener.onActionComplete("your password is this")
        }
    }

    // your other code here

    interface OnActionCompleteListener {
        fun onActionComplete(str: String)
    }

}

然后在创建一个实例之后，ConfirmPasswordBottomSheet你必须setOnActionCompleteListener()通过传递一个实例 来调用OnActionCompleteListener.

创建一个您想要使用它的实例，如下所示：

val listener = object: ConfirmPasswordBottomSheet.OnActionCompleteListener() {
    fun onActionComplete(str: String) {
        // do what you want to do here because this block will be invoked in bottom sheet
        // you will receive "your password is this" here
        // as per question maybe check your password / pin
        if (with(activity as MainActivity) { checkCardPermission(PinOptionFragment.card.authorities[AuthoritiesCardEnum.CARTE_VIEW_PIN]!!) }) {
            if (card.driverPin) {
                cardViewModel.requestPinDriver(with(activity as MainActivity) { currentUser.mainCode })
            } else {
                cardViewModel.requestPin(card.pan)
            }
        }
    }
}

创建接口实例后，您必须将其设置为ConfirmPasswordBottomSheet片段 (A) 中的实例，如下所示：

val bottomSheet = ConfirmPasswordBottomSheet()
bottomSheet.setOnActionCompleteListener(listener)

注意：此代码未经测试，可能需要一些修改，因为它不在我的脑海中。

于 2021-01-26T12:02:02.777 回答