Question

我有一个微调器，可以从服务器加载动态数据。微调器中的每个项目也具有自定义布局。我设法在微调器中显示数据。有人可以帮助我获得所选的值吗？

我尝试了spinner.getItemIdAtPosition（position），但是即使单击任何项目，我的结果也仍为0。

这是我的适配器代码：

class CustomDropDownAdapter(val context: Context, var batchList: Array<BatchList>) : BaseAdapter() {


    val mInflater: LayoutInflater = LayoutInflater.from(context)

    override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View {
        val view: View
        val vh: ItemRowHolder
        if (convertView == null) {
            view = mInflater.inflate(R.layout.batch_row_spinner, parent, false)
            vh = ItemRowHolder(view)
            view?.tag = vh
        } else {
            view = convertView
            vh = view.tag as ItemRowHolder
        }


        vh.date.text = batchList.get(position).expiry_date
        vh.availQty.text = "Available: ${batchList.get(position).available_quantity}"
        return view
    }

    override fun getItem(position: Int): Any? {

        return null

    }

    override fun getItemId(position: Int): Long {

        return 0

    }

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

    private class ItemRowHolder(row: View?) {

        val date: TextView
        val availQty: TextView

        init {
            this.date = row?.findViewById(R.id.date) as TextView
            this.availQty = row?.findViewById(R.id.available) as TextView
        }
    }
}

这是我在微调器中加载的功能

/**Method to load all items in spinner */
private fun loadBatch(medicineId:String,pharmaId:String)
{
    val call=RetrofitClient.instance.api.displayBatchList("Bearer $token",20.toString(),medicineId,0.toString(),pharmaId)
    call.enqueue(object :Callback<Array<BatchList>>{
        override fun onResponse(call: Call<Array<BatchList>>, response: Response<Array<BatchList>>) {
           if(response.code()==200)
           {

                   var spinnerAdapter: CustomDropDownAdapter = CustomDropDownAdapter(context!!, response.body()!!)
               updateMedView.pharmaSpinerbatch.adapter = spinnerAdapter


           }
        }

        override fun onFailure(call: Call<Array<BatchList>>, t: Throwable) {
            Log.e("Batch Load error",t.message)
        }


    })


}

我需要获取选定的物品

Answer 1

为微调器添加列表器

//item selected listener for spinner
mySpinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
                override fun onNothingSelected(p0: AdapterView<*>?) {
                    TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
                }

                override fun onItemSelected(p0: AdapterView<*>?, p1: View?, p2: Int, p3: Long) {
                    Toast.makeText(this@MainActivity, myStrings[p2], LENGTH_LONG).show()
                }

            }

如何从动态创建的微调器中获取所选项目

1 个答案: