选择的Kotlin AutoCompleteTextView适配器项具有不同的值

所以我在这个项目上与Kotlin合作,我主要使用Java,所以我试图在Kotlin中找到等价物来实现相同的功能。

我从数据库中获取一个JSONArray,并将其存储在一个名为 Congregation 它有以下变量 id: Int, name: String, language: String

我现在有一个注册活动,其中有一个“会众”的输入,我决定把它作为一个 AutoCompleteTextView 因此,我可以建议与用户键入内容匹配的可能值。我创造了一个习惯 ArrayAdapter 当显示 name 一个 会众 ( (下图)

然而 ,当我选择其中一个值时,它会显示列表中的完整值文本

e、 g.如果我在输入中选择“Leeds,Crossgates(英语)”,它将显示 Congregation(id=1, name=Leeds, Crossgates, language=English)

我想知道我怎样才能保住这份工作 名称 a的价值 会众 选中时,将显示在框中。

此外,当我在选择一个项目后尝试删除框的当前值时,我会收到一条消息 IndexOutOfBoundsException Index: 1 Size: 1

自定义阵列适配器(collectionListAdapter.kt) :

class CongregationListAdapter(context: Activity, resourceId: Int, textView: Int, private var congregations: List<Congregation>)
:ArrayAdapter<Congregation>(context, resourceId, textView, congregations) {

private var inflater: LayoutInflater = context.layoutInflater
private lateinit var view: View

@SuppressLint("SetTextI18n")
override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {

    if (convertView == null) {
        view = inflater.inflate(R.layout.congregation_list_item, parent, false)
    }
    val name: TextView = view.findViewById(R.id.congregation_text)

    val congregation: Congregation? = getItem(position)
    if (congregation != null) {
        name.text = congregation.name + " (" + congregation.language + ")"
    } else {
        name.text = ""
        return view
    }
    return view
}

override fun getCount(): Int {
    return congregations.size
}

@SuppressLint("SetTextI18n")
override fun getDropDownView(position: Int, convertView: View?, parent: ViewGroup): View {
    if (convertView == null) {
        view = inflater.inflate(R.layout.congregation_list_item, parent, false)
    }
    val congregation: Congregation? = getItem(position)
    val name: TextView = view.findViewById(R.id.congregation_text)
    if (congregation != null) {
        name.text = congregation.name + " (" + congregation.language + ")"
    } else {
        name.text = "Oops. There was a problem"
    }
    return view
}

}

自定义视图(collection_list_item.xml) :

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF"
android:orientation="horizontal">

<android.support.constraint.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:id="@+id/congregation_text"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="4dp"
        android:textColor="#000000"
        android:textSize="15sp"
        android:textStyle="normal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:ignore="MissingConstraints"
        tools:text="Leeds, Crossgates" />

</android.support.constraint.ConstraintLayout>

</LinearLayout>

聚合模型(Congregation.kt) :

@kotlinx.serialization.Serializable
data class Congregation(
    var id: Int,
    var name: String,
    var language: String
)