SettingsExposedDropdownMenuCheckBox requires input index.

Fix: 301354014
Test: Unit Test
Change-Id: I4f5ef9a3cfcd0705687232b5e67da8007bf97aed

src/com/android/settings/network/apn/ApnEditPageProvider.kt

@@ -148,13 +148,13 @@ fun ApnPage(apnDataCur: MutableState<ApnData>) {
                 stringResource(R.string.apn_mnc),
                 enabled = apnData.mncEnabled
             ) { apnData = apnData.copy(mnc = it) }
+            // Warning: apnProtocol, apnRoaming, mvnoType string2Int
             SettingsExposedDropdownMenuBox(
-                label = stringResource(R.string.apn_auth_type),
-                options = authTypeOptions,
-                selectedOptionText =
-                authTypeOptions.getOrElse(apnData.authType) { "" },
-                enabled = apnData.authTypeEnabled,
-            ) { apnData = apnData.copy(authType = authTypeOptions.indexOf(it)) }
+                stringResource(R.string.apn_auth_type),
+                authTypeOptions,
+                apnData.authType,
+                apnData.authTypeEnabled,
+            ) { apnData = apnData.copy(authType = it) }
             SettingsOutlinedTextField(
                 apnData.apnType,
                 stringResource(R.string.apn_type),

src/com/android/settings/network/apn/ApnStatus.kt

@@ -34,11 +34,11 @@ data class ApnData(
     val mnc: String = "",
     val authType: Int = -1,
     val apnType: String = "",
-    val apnProtocol: String = "",
-    val apnRoaming: String = "",
+    val apnProtocol: Int = -1,
+    val apnRoaming: Int = -1,
     val apnEnable: Boolean = true,
     val bearer: Int = 0,
-    val mvnoType: String = "",
+    val mvnoType: Int = -1,
     var mvnoValue: String = "",
     val bearerBitmask: Int = 0,
     val edited: Int = Telephony.Carriers.USER_EDITED,

tests/spa_unit/src/com/android/settings/network/apn/ApnEditPageProviderTest.kt

@@ -49,13 +49,14 @@ class ApnEditPageProviderTest {
     private val apnType = "apn_type"
     private val apnRoaming = "IPv4"
     private val apnEnable = context.resources.getString(R.string.carrier_enabled)
+    private val apnProtocolOptions = context.resources.getStringArray(R.array.apn_protocol_entries).toList()
     private val apnData = ApnData(
         name = apnName,
         mmsc = mmsc,
         mmsProxy = mmsProxy,
         mnc = mnc,
         apnType = apnType,
-        apnRoaming = apnRoaming,
+        apnRoaming = apnProtocolOptions.indexOf(apnRoaming),
         apnEnable = true
     )