Add expo-keyboard-language native module

New Expo module that exposes keyboard language detection via a node handle. On iOS it resolves the React Native view tag to the underlying UITextField/UITextView and returns textInputMode.primaryLanguage (BCP 47 tag). Android and web return null for now. https://claude.ai/code/session_01AMCp4M56WtFPz1pZtwgcvx
2026-02-28 14:49:15 +00:00
parent 6cdc1fe2b5
commit 3ca5a865a1
9 changed files with 132 additions and 0 deletions
@@ -0,0 +1,33 @@
+import ExpoModulesCore
+
+public class ExpoKeyboardLanguageModule: Module {
+  public func definition() -> ModuleDefinition {
+    Name("ExpoKeyboardLanguage")
+
+    Function("getKeyboardLanguage") { (nodeHandle: Int) -> String? in
+      guard let view = self.appContext?.findView(withTag: nodeHandle, ofType: UIView.self) else {
+        return nil
+      }
+
+      if let textInput = self.findTextInput(in: view) {
+        return textInput.textInputMode?.primaryLanguage
+      }
+
+      return view.textInputMode?.primaryLanguage
+    }
+  }
+
+  private func findTextInput(in view: UIView) -> UIView? {
+    if view is UITextField || view is UITextView {
+      return view
+    }
+
+    for subview in view.subviews {
+      if let found = findTextInput(in: subview) {
+        return found
+      }
+    }
+
+    return nil
+  }
+}