react-native-navigation/android/app/src/main/java/com/reactnativenavigation/modules/RctActivityModule.java

package com.reactnativenavigation.modules;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import com.facebook.react.bridge.ReadableArray;
import com.facebook.react.bridge.ReadableMap;
import com.reactnativenavigation.activities.BaseReactActivity;
import com.reactnativenavigation.activities.SingleScreenActivity;
import com.reactnativenavigation.activities.TabActivity;
import com.reactnativenavigation.core.objects.Screen;
import com.reactnativenavigation.utils.ContextProvider;

import java.util.ArrayList;

/**
 * Created by guyc on 10/03/16.
 */
public class RctActivityModule extends ReactContextBaseJavaModule {
    public static final String REACT_CLASS = "RctActivity";

    public RctActivityModule(ReactApplicationContext reactContext) {
        super(reactContext);
    }

    @Override
    public String getName() {
        return REACT_CLASS;
    }

    @ReactMethod
    public void startTabBasedApp(ReadableArray screens) {
        Activity context = ContextProvider.getActivityContext();
        if (context != null && !context.isFinishing()) {
            Intent intent = new Intent(context, TabActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);

            Bundle extras = new Bundle();
            extras.putSerializable(TabActivity.EXTRA_SCREENS, createScreens(screens));
            intent.putExtras(extras);
            
            context.startActivity(intent);
        }
    }

    private ArrayList<Screen> createScreens(ReadableArray screens) {
        ArrayList<Screen> ret = new ArrayList<>();
        for(int i = 0; i < screens.size(); i++) {
            ret.add(new Screen(screens.getMap(i)));
        }
        return ret;
    }

    @ReactMethod
    public void startSingleScreenApp(ReadableMap screen) {
        BaseReactActivity context = ContextProvider.getActivityContext();
        if (context != null && !context.isFinishing()) {
            Intent intent = new Intent(context, SingleScreenActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);

            Bundle extras = new Bundle();
            extras.putSerializable(SingleScreenActivity.EXTRA_SCREEN, new Screen(screen));
            intent.putExtras(extras);

            context.startActivity(intent);
        }
    }

    @ReactMethod
    public void navigatorPush(final ReadableMap screen) {
        final BaseReactActivity context = ContextProvider.getActivityContext();
         if (context != null && !context.isFinishing()) {
             context.runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
                     context.push(new Screen(screen));
                 }
             });
        }
    }

    @ReactMethod
    public void navigatorPop(final ReadableMap navigator) {
        final String navID = navigator.getString("navigatorID");
        final BaseReactActivity context = ContextProvider.getActivityContext();
        if (context != null && !context.isFinishing()) {
            context.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    context.pop(navID);
                }
            });
        }
    }
}