1.2.2: fix accidental pull-to-refresh; settings tabs on phones

- the web app reports the message list's scroll position through the bridge,
  so pull-to-refresh only fires when the list is really at the top; the
  trigger distance is bigger (the WebView itself never scrolls)
- settings tabs scroll horizontally on narrow screens (all tabs reachable)
- version 1.2.2

app/build.gradle.kts

@@ -22,8 +22,8 @@ android {
         applicationId = "dev.n1ko.nikogpt"
         minSdk = 29 // Android 10
         targetSdk = 35
-        versionCode = 6
-        versionName = "1.2.0"
+        versionCode = 8
+        versionName = "1.2.2"
     }
 
     signingConfigs {

app/src/main/java/dev/n1ko/nikogpt/MainActivity.kt

@@ -80,6 +80,10 @@ class MainActivity : AppCompatActivity() {
 
     // Shared text ("Share to NikoGPT") waiting for the page to load.
     private var pendingShare: String? = null
+    // Whether the chat's inner scroll container is at the top; pull-to-refresh
+    // only fires there (the WebView itself never scrolls).
+    @Volatile
+    private var webAtTop = true
     // Where the camera writes the picture before it reaches the web app.
     private var pendingCameraUri: Uri? = null
 
@@ -95,16 +99,28 @@ class MainActivity : AppCompatActivity() {
     private val legacySignIn: ActivityResultLauncher<Intent> =
         registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
             val link = legacyLinkMode
-            try {
-                val account = GoogleSignIn.getSignedInAccountFromIntent(result.data)
+            val account = try {
+                GoogleSignIn.getSignedInAccountFromIntent(result.data)
                     .getResult(ApiException::class.java)
-                val token = account?.idToken
-                if (!token.isNullOrBlank()) deliverToken(token, link) else openGoogleInBrowser(link)
             } catch (e: ApiException) {
+                // 12501/16 = the user closed the picker: stay in the app.
+                if (e.statusCode == 12501 || e.statusCode == 16) return@registerForActivityResult
+                Toast.makeText(this, getString(R.string.google_error_code, e.statusCode), Toast.LENGTH_LONG).show()
                 openGoogleInBrowser(link)
+                return@registerForActivityResult
             } catch (e: Exception) {
                 openGoogleInBrowser(link)
+                return@registerForActivityResult
             }
+            val token = account?.idToken
+            if (token.isNullOrBlank()) {
+                // microG accepted the account but could not mint an ID token
+                // (e.g. device registration is off): say so, then fall back.
+                Toast.makeText(this, getString(R.string.google_no_token), Toast.LENGTH_LONG).show()
+                openGoogleInBrowser(link)
+                return@registerForActivityResult
+            }
+            deliverToken(token, link)
         }
 
     // Runtime microphone permission, bridged to the WebView.
@@ -264,6 +280,10 @@ class MainActivity : AppCompatActivity() {
         })
 
         refresh.setOnRefreshListener { webView.reload() }
+        // Pull-to-refresh only when the chat list is really at the top; a
+        // bigger trigger distance keeps normal scrolling from reloading.
+        refresh.setOnChildScrollUpCallback { _, _ -> !webAtTop }
+        refresh.setDistanceToTriggerSync((80 * resources.displayMetrics.density).toInt())
 
         onBackPressedDispatcher.addCallback(this, object : OnBackPressedCallback(true) {
             override fun handleOnBackPressed() {
@@ -340,6 +360,13 @@ class MainActivity : AppCompatActivity() {
         fun linkGoogle(clientId: String) {
             runOnUiThread { openGooglePicker(clientId, link = true) }
         }
+
+        // The web app reports the message list's scroll position, so pulling
+        // down only refreshes when the list really is at the top.
+        @JavascriptInterface
+        fun setAtTop(atTop: Boolean) {
+            webAtTop = atTop
+        }
     }
 
     // openGooglePicker tries the native pickers in order: Credential Manager

app/src/main/res/values-ru/strings.xml

@@ -7,6 +7,8 @@
     <string name="download_started">Загрузка началась</string>
     <string name="download_failed">Не удалось начать загрузку</string>
     <string name="google_error">Не удалось войти через Google (%1$s)</string>
+    <string name="google_error_code">Не удалось войти через Google (код %1$d)</string>
+    <string name="google_no_token">Google не вернул ID-токен (проверьте Android OAuth-клиент: package и SHA-1)</string>
     <string name="attach_file">Файл</string>
     <string name="attach_camera">Камера</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -7,6 +7,8 @@
     <string name="download_started">Download started</string>
     <string name="download_failed">Could not start the download</string>
     <string name="google_error">Google sign-in failed (%1$s)</string>
+    <string name="google_error_code">Google sign-in failed (code %1$d)</string>
+    <string name="google_no_token">Google did not return an ID token (check the Android OAuth client, package and SHA-1)</string>
     <string name="attach_file">File</string>
     <string name="attach_camera">Camera</string>
 </resources>