我试图做多个编辑文本addtextchangedlistener，但是应用程序崩溃了

Question

我的申请中有两篇社论。当我开始在这两个编辑器中的任何一个中写一个值时，我想在另一个编辑器中看到结果。但是，当我开始在任何编辑中键入值时，都会出现一个错误。

private fun initListener() {
        var money = 0.0
        binding.apply {
            monayValueEditText1.addTextChangedListener {
                val money1position = moneyValueSpinner1.selectedItemPosition
                val money2position = moneyValueSpinner2.selectedItemPosition
                money = if (it!!.isEmpty()) 0.0 else
                    it.toString().toDouble()
                val result =
                    ((currencyList[money1position].ForexBuying!! / currencyList[money1position].Unit!!.toDouble()) * money) / currencyList[money2position].ForexBuying!! / currencyList[money2position].Unit!!.toDouble()
                monayValueEditText2.setText(DecimalFormat("##.####").format(result).toString())
            }
            monayValueEditText2.addTextChangedListener {
                money = if (it!!.isEmpty()) 0.0 else
                    it.toString().toDouble()
                val money1position = moneyValueSpinner1.selectedItemPosition
                val money2position = moneyValueSpinner2.selectedItemPosition
                val result =
                    ((currencyList[money2position].ForexBuying!! / currencyList[money2position].Unit!!.toDouble()) * money) / currencyList[money1position].ForexBuying!! / currencyList[money1position].Unit!!.toDouble()
                monayValueEditText1.setText(DecimalFormat("##.####").format(result).toString())
            }

        }

    }

我得到的错误信息是

xt(TextView.java:6147)
        at android.widget.EditText.setText(EditText.java:121)
        at android.widget.TextView.setText(TextView.java:6099)
        at com.metoer.ceptedovizborsa.view.fragment.CallculationCurrencyFragment$initListener$lambda-3$$inlined$addTextChangedListener$default$2.afterTextChanged(TextView.kt:104)
        at android.widget.TextView.sendAfterTextChanged(TextView.java:10602)
        at android.widget.TextView.setText(TextView.java:6328)
        at android.widget.TextView.setText(TextView.java:6147)
        at android.widget.EditText.setText(EditText.java:121)
        at android.widget.TextView.setText(TextView.java:6099)

Answer 1

如果您只对获得两个协同工作的EditText感兴趣，我想您可以在双向数据库中使用双向数据库方式，而将文本保存在ViewModel中。

<layout ...>

  <data>

      <variable 
          name="viewModel"
          type="com.mypackage.MyViewModel"

  </data>

  ...

  <EditText
       android:id="@+id/monayValueEditText1"
       android:text="@={viewModel.text}"
       ... />

  <EditText
       android:id="@+id/monayValueEditText2"
       android:text="@={viewModel.text}"
       ... />

</layout>