【发布时间】:2020-10-19 21:40:41
【问题描述】:
由于某种原因,尝试将点击侦听器应用于我的 RecyclerView 项目以启动新活动时,未读取我的 RecyclerView 适配器中的上下文。 myContext.startActivity(intent) 返回“未解决的引用”错误。为了阅读上下文,应该将其更改为什么?我是否需要使用视图持有者或TextView 或其他内容的上下文?
未解析的引用:myContext
class MyAdapter(
val myContext: Context,
var listCompany: MutableList<ItemCompany>,
private val mTwoPane: Boolean,
private val itemClickListener: AdapterView.OnItemClickListener
) : androidx.recyclerview.widget.RecyclerView.Adapter<MyAdapter
.CompanyViewHolder>() {
class CompanyViewHolder(itemView: View) : androidx.recyclerview.widget.RecyclerView
.ViewHolder(itemView) {
var tvTitle: TextView = itemView.findViewById(R.id.tv_RVItem)
fun bind(company: ItemCompany, clickListener: AdapterView.OnItemClickListener)
{
tvTitle.text = company.companyName
itemView.setOnClickListener {v ->
val intent: Intent = when (company.companyName) {
v.resources.getString(R.string.bing) -> {
Intent(Intent.ACTION_VIEW,
Uri.parse("https://www.bing.com/"))
}
v.resources.getString(R.string.google) -> {
Intent(Intent.ACTION_VIEW,
Uri.parse("https://www.google.com/"))
}
else -> {
Intent(Intent.ACTION_VIEW,
Uri.parse("https://www.yahoo.com/"))
}
}
myContext.startActivity(intent)
clickListener.onItemClick(company)
}
}
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CompanyViewHolder {
val inflater = LayoutInflater.from(myContext)
val v = inflater.inflate(R.layout.rv_item, parent, false)
return CompanyViewHolder(v)
}
override fun onBindViewHolder(holder: CompanyViewHolder, position: Int) {
val product = listCompany[holder.adapterPosition]
holder.tvTitle.text = product.companyName
holder.bind(product, itemClickListener)
}
override fun getItemCount(): Int {
return listCompany.size
}
override fun getFilter(): Filter {
return companyFilter
}
}
【问题讨论】:
-
您不能从上下文引用开始活动。您必须从活动参考开始。那么startActivity函数就会被正确解析
标签: android kotlin android-recyclerview android-adapter android-context