feat: Choose transaction save/export dialog

app/src/main/java/com/example/bondoyap/ui/settings/SettingsFragment.kt

 package com.example.bondoyap.ui.settings
 
+import android.app.AlertDialog
+import android.content.DialogInterface
 import android.content.Intent
 import android.os.Bundle
 import android.util.Log
@@ -84,9 +86,22 @@ class SettingsFragment : Fragment() {
 
         saveButton.setOnClickListener {
             Toast.makeText(appContext, "Menyimpan transaksi...", Toast.LENGTH_SHORT).show()
-            //todo choose one
-            exporter.exportToXLS()
-            exporter.exportToXLSX()
+
+            val formats = arrayOf("XLS", "XLSX")
+            val builder = AlertDialog.Builder(requireContext())
+            builder.setTitle("Pilih Format File")
+            builder.setItems(formats) { dialog: DialogInterface, which: Int ->
+                when (which) {
+                    0 -> {
+                        exporter.exportToXLS()
+                    }
+                    1 -> {
+                        exporter.exportToXLSX()
+                    }
+                }
+                dialog.dismiss()
+            }
+            builder.create().show()
 
             Toast.makeText(appContext, "Penyimpanan pada folder Documents berhasil...", Toast.LENGTH_SHORT).show()
         }