【发布时间】:2019-08-29 18:38:51
【问题描述】:
好的,所以我有一个现有的自定义回收器视图适配器,它使用提供的项目填充回收器视图,并在布局中设置属性,如下所示,我会尝试从代码中删除不相关的项目
class TransactionAdapter(val context: Context, var transactions: List<Transaction>) :
androidx.recyclerview.widget.RecyclerView.Adapter<TransactionAdapter.CustomViewHolder>() {
override fun onCreateViewHolder(p0: ViewGroup, p1: Int): CustomViewHolder {
val inflater = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
val view = inflater.inflate(R.layout.transaction_list_inner_view, p0, false)
return CustomViewHolder(view)
}
override fun onBindViewHolder(p0: CustomViewHolder, p1: Int) {
p0.transactionNameTextView?.text = transactions[p1].title
p0.transactionAmountTextView?.text = transactions[p1].amount
if (!transactions[p1].location.isNullOrEmpty()) {
p0.transactionLocationTextView?.text = transactions[p1].location
} else {
p0.transactionLocationTextView?.text = "N/A"
}
p0.transactionTimeTextView?.text = transactions[p1].createdAt
p0.transactionDeleteButton?.setOnClickListener { println("working delete") }
}
class CustomViewHolder(v: View) : androidx.recyclerview.widget.RecyclerView.ViewHolder(v) {
val transactionNameTextView: TextView? = v.findViewById(R.id.transactionNameTextView) as TextView?
val transactionAmountTextView: TextView? = v.findViewById(R.id.transactionAmountTextView) as TextView?
val transactionLocationTextView: TextView? = v.findViewById(R.id.transactionLocationTextView) as TextView?
val transactionTimeTextView: TextView? = v.findViewById(R.id.transactionTimeTextView) as TextView?
val transactionDeleteButton: AppCompatButton? = v.findViewById(R.id.transactionDeleteButton) as AppCompatButton?
}
}
现在,我想实现这个库来使用可扩展的卡片视图,这样我就只能显示交易的名称和金额等,其余的都可以扩展,这个库可以在这里找到https://github.com/AleSpero/ExpandableCardView,库要求我创建一个带有 inner_view 属性的新布局,我已经这样做了,我的布局称为transaction_list_expandable_view.xml,它看起来像这样
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:ignore="ExtraText">
<com.alespero.expandablecardview.ExpandableCardView
android:id="@+id/transaction"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:title="testt"
app:inner_view="@layout/transaction_list_inner_view"
app:expandOnClick="true"
app:animationDuration="300"
app:startExpanded="false"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
现在问题来了,我的自定义 TransactionAdapter 只处理一种布局,即我称为 transaction_list_inner_view 的那种,我怎样才能让这个适配器同时处理内部和可扩展视图并获得所需的结果? (带有相关标题的卡片列表会展开以显示属于它们的其余详细信息)
抱歉,问题和代码太长,提前感谢您的帮助。
【问题讨论】:
标签: android android-recyclerview material-design android-cardview