Android 如何更新适配器数据列表?
我在更新recyclerView适配器中的数据列表时遇到问题 我正在调用webservice以获取main.activity中的数据列表,如下所示:Android 如何更新适配器数据列表?,android,kotlin,android-recyclerview,adapter,Android,Kotlin,Android Recyclerview,Adapter,我在更新recyclerView适配器中的数据列表时遇到问题 我正在调用webservice以获取main.activity中的数据列表,如下所示: private fun get_company_name(){ val request = buildService(ApiInterface::class.java) val call = request.getCompanyList() call.enqueue(object : Callback<List<
private fun get_company_name(){
val request = buildService(ApiInterface::class.java)
val call = request.getCompanyList()
call.enqueue(object : Callback<List<CompanyModel>>{
override fun onResponse(call: Call<List<CompanyModel>>, response: Response<List<CompanyModel>>) {
if (response.isSuccessful){
indeterminateBar.visibility = View.INVISIBLE
frg_holder.apply {
setHasFixedSize(true)
layoutManager = LinearLayoutManager(this@MainActivity)
adapter = DidebanAdapter(response.body()!!)
}
}
}
override fun onFailure(call: Call<List<CompanyModel>>, t: Throwable) {
indeterminateBar.visibility = View.INVISIBLE
}
})
}
private fun get_company_name(){
val request=buildService(ApiInterface::class.java)
val call=request.getCompanyList()
排队(对象:Callback{
覆盖fun onResponse(调用:调用,响应:响应){
if(response.issucessful){
不确定Bar.visibility=View.INVISIBLE
frg_支架。适用{
setHasFixedSize(真)
layoutManager=LinearLayoutManager(this@MainActivity)
适配器=DidebanAdapter(response.body()!!)
}
}
}
覆盖失效时的乐趣(调用:调用,t:可丢弃){
不确定Bar.visibility=View.INVISIBLE
}
})
}
这是我的适配器:
class DidebanAdapter(val didebans: List<CompanyModel>): RecyclerView.Adapter<DidebanViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): DidebanViewHolder {
val view = LayoutInflater.from(parent.context).inflate(R.layout.fragment_dideban, parent, false)
return DidebanViewHolder(view)
}
override fun getItemCount(): Int {
return didebans.size
}
override fun onBindViewHolder(holder: DidebanViewHolder, position: Int) {
holder.itemView.delete_dideban.setOnClickListener(View.OnClickListener { view ->
val id : Int = holder.itemView.dideban_id.text.toString().toInt();
val request = ApiClient.buildService(ApiInterface::class.java)
val call = request.deleteCompany(id)
call.enqueue(object : Callback<Boolean> {
override fun onResponse(call: Call<Boolean>, response: Response<Boolean>) {
notifyItemRemoved(position)
}
override fun onFailure(call: Call<Boolean>, t: Throwable) {
Log.e("msg","false")
}
})
})
return holder.bind(didebans[position])
}
}
class DidebanViewHolder(itemView : View): RecyclerView.ViewHolder(itemView){
private val title:TextView = itemView.findViewById(R.id.dideban_name)
private val dideban_id:TextView = itemView.findViewById(R.id.dideban_id)
fun bind(dideban: CompanyModel) {
title.text = dideban.Title
dideban_id.text = dideban.Id.toString()
}
}
class-DidebanAdapter(val-didebans:List):RecyclerView.Adapter(){
override fun onCreateViewHolder(父级:ViewGroup,viewType:Int):DidebanViewHolder{
val view=LayoutInflater.from(parent.context).充气(R.layout.fragment_dideban,parent,false)
返回DidebanViewHolder(视图)
}
重写getItemCount():Int{
返回didebans.size
}
覆盖BindViewHolder(holder:DidebanViewHolder,位置:Int){
holder.itemView.delete_dideban.setOnClickListener(View.OnClickListener{View->
val id:Int=holder.itemView.dideban_id.text.toString().toInt();
val请求=ApiClient.buildService(ApiInterface::class.java)
val call=request.deleteCompany(id)
排队(对象:Callback{
覆盖fun onResponse(调用:调用,响应:响应){
已删除的项目(位置)
}
覆盖失效时的乐趣(调用:调用,t:可丢弃){
Log.e(“msg”,“false”)
}
})
})
返回持有者绑定(didebans[位置])
}
}
类DidebanViewHolder(itemView:View):RecyclerView.ViewHolder(itemView){
私有val标题:TextView=itemView.findViewById(R.id.dideban_name)
private val dideban_id:TextView=itemView.findViewById(R.id.dideban_id)
有趣的绑定(迪德班:公司模型){
title.text=dideban.title
dideban_id.text=dideban.id.toString()
}
}
在onBindViewHolder函数中,我为单击的删除图像设置了操作,它调用另一个webservice并从数据库中删除项,它工作正常,但我希望我的适配器在删除项时更新。
我使用notifyItemRemoved(position),但它不能根据需要更新我的列表。在<代码>notifyItemRemoved(position)之前,您应该手动从列表中删除元素(适配器不会为您这样做)
didebans.remove(position)
哦,我不敢相信忘记了这一行,非常感谢