work on modal

android/app/src/main/java/com/reactnativenavigation/bridge/NavigationReactModule.java

 
     @ReactMethod
     public void showModal(final ReadableMap params) {
+        NavigationCommandsHandler.showModal(BundleConverter.toBundle(params));
     }
 
     @ReactMethod

android/app/src/main/java/com/reactnativenavigation/controllers/Modal.java

 package com.reactnativenavigation.controllers;
 
-public class Modal {
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.view.Window;
+
+import com.reactnativenavigation.R;
+import com.reactnativenavigation.params.ScreenParams;
+
+public class Modal extends Dialog implements DialogInterface.OnDismissListener {
+    private final ScreenParams screenParams;
+
+    public Modal(Context context, ScreenParams screenParams) {
+        super(context, R.style.Modal);
+        this.screenParams = screenParams;
+        setCancelable(true);
+        requestWindowFeature(Window.FEATURE_NO_TITLE);
+
+    }
+
+    @Override
+    public void onDismiss(DialogInterface dialog) {
+
+    }
 }

android/app/src/main/java/com/reactnativenavigation/controllers/ModalController.java

 package com.reactnativenavigation.controllers;
 
+import android.app.Activity;
+
+import com.reactnativenavigation.params.ScreenParams;
+
+import java.util.Stack;
+
 public class ModalController {
+    private final Activity activity;
+    private Stack<Modal> stack = new Stack<>();
+
+    public ModalController(Activity activity) {
+        this.activity = activity;
+    }
+
+
+    public void showModal(ScreenParams screenParams) {
+        Modal modal = new Modal(activity, screenParams);
+        modal.show();
+        stack.add(modal);
+    }
+
     public boolean onBackPressed() {
         return false;
     }
     public void onDestroy() {
 
     }
-
-//    private final Stack<RnnModal> modals = new Stack<>();
-//
-//    public ModalController() {
-//    }
-//
-//    public void add(RnnModal modal) {
+    //    public void add(RnnModal modal) {
 //        modals.add(modal);
 //    }
 //

android/app/src/main/java/com/reactnativenavigation/controllers/NavigationActivity.java

      */
     static NavigationActivity currentActivity;
 
-    private final ModalController modalController = new ModalController();
     private ActivityParams activityParams;
+    private ModalController modalController;
     private Layout layout;
 
     @Override
         activityParams = NavigationCommandsHandler.getActivityParams(getIntent());
 
         createLayout();
+        createModalController();
+    }
+
+    private void createModalController() {
+        modalController = new ModalController(this);
     }
 
     private void createLayout() {
     void setTopBarVisible(String screenInstanceID, boolean hidden, boolean animated) {
         layout.setTopBarVisible(screenInstanceID, hidden, animated);
     }
+
+    void showModal(ScreenParams screenParams) {
+        modalController.showModal(screenParams);
+    }
 }

android/app/src/main/java/com/reactnativenavigation/controllers/NavigationCommandsHandler.java

             }
         });
     }
+
+    public static void showModal(Bundle params) {
+        final NavigationActivity currentActivity = NavigationActivity.currentActivity;
+        if (currentActivity == null) {
+            return;
+        }
+
+        final ScreenParams screenParams = ScreenParamsParser.parse(params);
+
+        NavigationApplication.instance.runOnMainThread(new Runnable() {
+            @Override
+            public void run() {
+                currentActivity.showModal(screenParams);
+            }
+        });
+    }
 }

android/app/src/main/java/com/reactnativenavigation/params/ScreenParams.java

     //    public String tabLabel; TODO when tabs are supported move to TabParams
     //    public Drawable tabIcon;
 
-    // TODO navigationParams should be a class with a `toBundle` method or something. Then we wouldn't neet to keep these two fields here
+    // TODO navigationParams should be a terminated. destroyed. annihilated. disintegrated. banished from existence.
     public String screenInstanceId;
     public String navigatorEventId;
     public Bundle navigationParams;