Project initialization (npx create-react-native-library)

android/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.bigbluebuttonmobilesdk">
+
+</manifest>

android/src/main/java/com/bigbluebuttonmobilesdk/BigbluebuttonMobileSdkPackage.java

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+package com.bigbluebuttonmobilesdk;
+
+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.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class BigbluebuttonMobileSdkPackage implements ReactPackage {
+    @Override
+    public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
+        return Arrays.<ViewManager>asList(new BigbluebuttonMobileSdkViewManager());
+    }
+}

android/src/main/java/com/bigbluebuttonmobilesdk/BigbluebuttonMobileSdkViewManager.java

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+package com.bigbluebuttonmobilesdk;
+
+import android.graphics.Color;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+
+import com.facebook.react.uimanager.SimpleViewManager;
+import com.facebook.react.uimanager.ThemedReactContext;
+import com.facebook.react.uimanager.annotations.ReactProp;
+
+public class BigbluebuttonMobileSdkViewManager extends SimpleViewManager<View> {
+    public static final String REACT_CLASS = "BigbluebuttonMobileSdkView";
+
+    @Override
+    @NonNull
+    public String getName() {
+        return REACT_CLASS;
+    }
+
+    @Override
+    @NonNull
+    public View createViewInstance(ThemedReactContext reactContext) {
+        return new View(reactContext);
+    }
+
+    @ReactProp(name = "color")
+    public void setColor(View view, String color) {
+        view.setBackgroundColor(Color.parseColor(color));
+    }
+}