JSON显示在Android中获取的数据并在TextView和TableLayout中显示.JSON具有九条记录，并使用Retrofit2和RXjava2对其进行解析。 所有数据都在android端并存储在ArrayList中。 在ArrayList中，“大小”为9，获取所有数据。
Textview显示数据，但在TableLayout中仅显示两个记录，不显示另外七个记录。在第三条记录中，var var tax_total给出错误：“ kotlin.kotlinnullpointerexception”
不显示其他数据是什么问题？
private fun fetchYearData(){
val retrofit = APIClient.apIClient
if (retrofit != null) {
api = retrofit.create(APIInterface::class.java)
}
compositeDisposable!!.add(api.getSalesGSTData(1,1,"04/01/2018","31/03/2019")
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe( {
displaySalesGSTData(it.salesGst) },
{
Toast.makeText(this,it.message,Toast.LENGTH_LONG).show() }))
}
private fun displaySalesGSTData(salesGSt : List<SalesGST>) {
salesGST = SalesGST()
tvSalesCompanyName.setText(salesGSt.get(1).Cmp_Name)
tvGSTIN.setText(salesGSt.get(1).GSTIN)
val rowHeader = TableRow(this@Sales)
rowHeader.setBackgroundColor(Color.parseColor("#c0c0c0"))
rowHeader.setLayoutParams(TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT,
TableLayout.LayoutParams.WRAP_CONTENT))
val headerText = arrayOf<String>("Sr.No.", "Invoice Type", "Bill No.", "Bill Date", "Firm Name", "GST NO","TAX Total","CGST","SGST","IGST","Net Amount")
for (c in headerText)
{
val tv = TextView(this@Sales)
tv.setLayoutParams(TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT))
tv.setGravity(Gravity.CENTER)
// tv.setBackgroundResource(R.drawable.table_header)
tv.setTextColor(Color.parseColor("#3F51B5"))
tv.setTextSize(18F)
tv.setPadding(5, 5, 5, 5)
tv.setText(c)
rowHeader.addView(tv)
}
tableMarks.addView(rowHeader)
for (j in 0 until salesGSt.size)
{
var fName : String = salesGSt[j].FirmName!!
var invoice : String = salesGSt[j].InvoiceType!!
var bill_no : String = salesGSt[j].ChallanNo!!
var bill_date : String = salesGSt[j].ChallanDate!!
var gst_no : String = salesGSt[j].PartyGST!!
var tax_total : String = salesGSt[j].TaxTotal!!
var cgst : String = salesGSt[j].CGSTTotal!!
var igst : String = salesGSt[j].IGSTTotal!!
var sgst : String = salesGSt[j].SGSTTotal!!
var net_amount : String = salesGSt[j].ChallanAmount!!
var sr : Int = j
// dara rows
val row = TableRow(this@Sales)
row.setLayoutParams(TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT,
TableLayout.LayoutParams.WRAP_CONTENT))
val colText = arrayOf<String>(sr.toString(),(invoice), bill_no, bill_date, fName, gst_no,tax_total,cgst,sgst,igst,net_amount)
for (text in colText)
{
val tv = TextView(this@Sales)
tv.setLayoutParams(TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT))
tv.setGravity(Gravity.CENTER)
// tv.setBackgroundResource(R.drawable.table_shape)
tv.setTextSize(18F)
tv.setTextColor(Color.parseColor("#000000"))
tv.setPadding(5, 5, 5, 5)
tv.setText(text)
row.addView(tv)
}
tableMarks.addView(row)
}
JSON：
{"success":1,"salesGst":[{"Cmp_Name":"ABC","GSTIN":"AAAA","FirmName":"SALES GJ","ChallanNo":"1","ChallanDate":"2019-03-15 00:00:00","ChallanAmount":"2778.75","TaxTotal":"2778.75","InvoiceType":"Retail Invoice","CGSTTotal":"0.0","PartyGST":"CDE","SGSTTotal":"0.0","IGSTTotal":"0.0"},{"Cmp_Name":"ABC","GSTIN":"AAAA","FirmName":"SALES GJ","ChallanNo":"1","ChallanDate":"2019-03-13 00:00:00","ChallanAmount":"2203.0","TaxTotal":"2118.5","InvoiceType":"Tax Invoice","CGSTTotal":"52.96","PartyGST":"CDE","SGSTTotal":"52.96","IGSTTotal":"0.0"},{"Cmp_Name":"ABC","GSTIN":"AAAA","FirmName":"VIKAS","ChallanNo":"2","ChallanDate":"2019-03-16 00:00:00","ChallanAmount":"6975.0","TaxTotal":"6975.0","InvoiceType":"Retail Invoice","CGSTTotal":"0.0","PartyGST":null,"SGSTTotal":"0.0","IGSTTotal":"0.0"},{"Cmp_Name":"ABC","GSTIN":"AAAA","FirmName":"SALES MH","ChallanNo":"2","ChallanDate":"2019-03-13 00:00:00","ChallanAmount":"420.0","TaxTotal":"403.75","InvoiceType":"Tax Invoice","CGSTTotal":"0.0","PartyGST":"ABC","SGSTTotal":"0.0","IGSTTotal":"20.19"},{"Cmp_Name":"ABC","GSTIN":"AAAA","FirmName":"SALES GJ","ChallanNo":"3","ChallanDate":"2019-03-14 00:00:00","ChallanAmount":"4788.0","TaxTotal":"4560.0","InvoiceType":"Tax Invoice","CGSTTotal":"114.0","PartyGST":"CDE","SGSTTotal":"114.0","IGSTTotal":"0.0"},{"Cmp_Name":"ABC","GSTIN":"AAAA","FirmName":"SALES GJ","ChallanNo":"4","ChallanDate":"2019-03-15 00:00:00","ChallanAmount":"241.9","TaxTotal":"230.38","InvoiceType":"Tax Invoice","CGSTTotal":"5.76","PartyGST":"CDE","SGSTTotal":"5.76","IGSTTotal":"0.0"},{"Cmp_Name":"ABC","GSTIN":"AAAA","FirmName":"SALES GJ","ChallanNo":"5","ChallanDate":"2019-03-15 00:00:00","ChallanAmount":"5563.68","TaxTotal":"5101.5","InvoiceType":"Tax Invoice","CGSTTotal":"231.28","PartyGST":"CDE","SGSTTotal":"231.28","IGSTTotal":"0.0"},{"Cmp_Name":"ABC","GSTIN":"AAAA","FirmName":"SALES GJ","ChallanNo":"6","ChallanDate":"2019-03-16 00:00:00","ChallanAmount":"13238.0","TaxTotal":"12459.25","InvoiceType":"Tax Invoice","CGSTTotal":"389.29","PartyGST":"CDE","SGSTTotal":"389.29","IGSTTotal":"0.0"},{"Cmp_Name":"ABC","GSTIN":"AAAA","FirmName":"SALES MH","ChallanNo":"7","ChallanDate":"2019-03-16 00:00:00","ChallanAmount":"2074.0","TaxTotal":"1975.0","InvoiceType":"Tax Invoice","CGSTTotal":"0.0","PartyGST":"ABC","SGSTTotal":"0.0","IGSTTotal":"98.75"}]}
xml：
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:scrollbarStyle="insideInset"
android:fadeScrollbars="true"
android:scrollbarSize="10dp"
android:fitsSystemWindows="true">
<TableLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tableMarks"
android:stretchColumns="*"
android:layout_marginTop="20dp"
android:orientation="horizontal"
></TableLayout>
</HorizontalScrollView>
</ScrollView>