Fix Android navigation mode detection

android/app/src/main/java/me/rainbow/MainApplication.kt

@@ -21,6 +21,7 @@ import me.rainbow.NativeModules.RNStartTime.RNStartTimePackage
 import me.rainbow.NativeModules.RNTextAnimatorPackage.RNTextAnimatorPackage
 import me.rainbow.NativeModules.RNZoomableButton.RNZoomableButtonPackage
 import me.rainbow.NativeModules.SystemNavigationBar.SystemNavigationBarPackage
+import me.rainbow.NativeModules.NavbarHeight.NavbarHeightPackage
 
 class MainApplication : Application(), ReactApplication {
     override val reactNativeHost: ReactNativeHost = object : DefaultReactNativeHost(this) {
@@ -41,6 +42,7 @@ class MainApplication : Application(), ReactApplication {
             packages.add(KeychainPackage(KeychainModuleBuilder().withoutWarmUp()))
             packages.add(RNStartTimePackage(START_MARK))
             packages.add(RNHapticsPackage())
+            packages.add(NavbarHeightPackage())
             return packages
         }
 

android/app/src/main/java/me/rainbow/NativeModules/NavbarHeight/NavbarHeightModule.java

@@ -0,0 +1,91 @@
+package me.rainbow.NativeModules.NavbarHeight;
+
+import androidx.annotation.NonNull;
+
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.module.annotations.ReactModule;
+import android.graphics.Point;
+import android.view.WindowManager;
+import android.view.Display;
+import java.lang.IllegalAccessException;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.NoSuchMethodException;
+import android.view.WindowInsets;
+import android.os.Build;
+import android.content.Context;
+
+@ReactModule(name = NavbarHeightModule.NAME)
+public class NavbarHeightModule extends ReactContextBaseJavaModule {
+    public static final String NAME = "NavbarHeight";
+
+    public NavbarHeightModule(ReactApplicationContext reactContext) {
+        super(reactContext);
+    }
+
+    @Override
+    @NonNull
+    public String getName() {
+        return NAME;
+    }
+
+    // Example method
+    // See https://reactnative.dev/docs/native-modules-android
+    @ReactMethod
+    public double getNavigationBarHeightSync() {
+        Context context = getReactApplicationContext();
+        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        if (Build.VERSION.SDK_INT >= 30) {
+            return windowManager
+                    .getCurrentWindowMetrics()
+                    .getWindowInsets()
+                    .getInsets(WindowInsets.Type.navigationBars())
+                    .bottom;
+        } else {
+            Point appUsableSize = getAppUsableScreenSize(context);
+            Point realScreenSize = getRealScreenSize(context);
+
+            // navigation bar on the side
+            if (appUsableSize.x < realScreenSize.x) {
+                return appUsableSize.y;
+            }
+
+            // navigation bar at the bottom
+            if (appUsableSize.y < realScreenSize.y) {
+                return realScreenSize.y - appUsableSize.y;
+            }
+
+            // navigation bar is not present
+            return 0;
+        }
+    }
+    public Point getAppUsableScreenSize(Context context) {
+        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        Display display = windowManager.getDefaultDisplay();
+        Point size = new Point();
+        display.getSize(size);
+        return size;
+    }
+    public Point getRealScreenSize(Context context) {
+        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        Display display = windowManager.getDefaultDisplay();
+        Point size = new Point();
+
+        if (Build.VERSION.SDK_INT >= 17) {
+            display.getRealSize(size);
+        } else if (Build.VERSION.SDK_INT >= 14) {
+            try {
+                size.x = (Integer) Display.class.getMethod("getRawWidth").invoke(display);
+                size.y = (Integer) Display.class.getMethod("getRawHeight").invoke(display);
+            } catch (IllegalAccessException e) {} catch (InvocationTargetException e) {} catch (NoSuchMethodException e) {}
+        }
+
+        return size;
+    }
+    @ReactMethod(isBlockingSynchronousMethod = true)
+    public double getNavigationBarHeight() {
+        return getNavigationBarHeightSync();
+    }
+}

android/app/src/main/java/me/rainbow/NativeModules/NavbarHeight/NavbarHeightPackage.java

@@ -0,0 +1,28 @@
+package me.rainbow.NativeModules.NavbarHeight;
+
+import androidx.annotation.NonNull;
+
+import com.facebook.react.ReactPackage;
+import com.facebook.react.bridge.NativeModule;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.uimanager.ViewManager;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class NavbarHeightPackage implements ReactPackage {
+    @NonNull
+    @Override
+    public List<NativeModule> createNativeModules(@NonNull ReactApplicationContext reactContext) {
+        List<NativeModule> modules = new ArrayList<>();
+        modules.add(new NavbarHeightModule(reactContext));
+        return modules;
+    }
+
+    @NonNull
+    @Override
+    public List<ViewManager> createViewManagers(@NonNull ReactApplicationContext reactContext) {
+        return Collections.emptyList();
+    }
+}