Merge pull request #191 from deepueg/add-null-check-and-util

Add null check and util

Author: deepueg

android/lib/src/androidTest/java/com/ern/api/impl/SampleActivity.java

@@ -25,8 +25,7 @@ public class SampleActivity extends ElectrodeBaseActivity {
     public JSONObject finishFlowPayload;
 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
+    protected void preRootComponentRender() {
         ElectrodeReactContainer.initialize(getApplication(), new ElectrodeReactContainer.Config());
     }
 

android/lib/src/main/java/com/ern/api/impl/core/ElectrodeBaseActivityDelegate.java

@@ -1,5 +1,6 @@
 package com.ern.api.impl.core;
 
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.MenuItem;
 
@@ -74,14 +75,18 @@ public void onStart() {
     @OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
     @Override
     public void onResume() {
-        super.onResume();
+        if (getReactNativeHost() != null) {
+            super.onResume();
+        }
         Logger.v(TAG, "onResume()");
     }
 
     @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
     @Override
     public void onPause() {
-        super.onPause();
+        if (getReactNativeHost() != null) {
+            super.onPause();
+        }
         Logger.v(TAG, "onPause()");
     }
 
@@ -94,7 +99,9 @@ public void onStop() {
     @Override
     public void onDestroy() {
         mFragmentActivity = null;
-        super.onDestroy();
+        if (getReactNativeHost() != null) {
+            super.onDestroy();
+        }
         Logger.v(TAG, "onDestroy()");
     }
 
@@ -106,6 +113,13 @@ public boolean onOptionsItemSelected(MenuItem item) {
         return false;
     }
 
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (getReactNativeHost() != null) {
+            super.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+
     @Override
     public boolean onBackPressed() {
         if (mDefaultLaunchConfig.isRootBackPressHandledByRN() && mFragmentActivity.getOnBackPressedDispatcher().hasEnabledCallbacks()) {
@@ -197,9 +211,9 @@ private void switchToFragment(@NonNull Fragment fragment, @NonNull LaunchConfig
      * @param transaction {@link FragmentTransaction} used for the current fragment transaction
      */
     protected void manageTransition(@NonNull FragmentTransaction transaction) {
-        if(mDefaultLaunchConfig.navigationTransition == LaunchConfig.TRANSITION.FADE) {
+        if (mDefaultLaunchConfig.navigationTransition == LaunchConfig.TRANSITION.FADE) {
             AnimUtil.fade(transaction);
-        } else if(mDefaultLaunchConfig.navigationTransition == LaunchConfig.TRANSITION.SLIDE) {
+        } else if (mDefaultLaunchConfig.navigationTransition == LaunchConfig.TRANSITION.SLIDE) {
             AnimUtil.slide(transaction);
         }
     }

android/lib/src/main/java/com/ern/api/impl/navigation/ElectrodeBaseActivity.java

@@ -145,6 +145,7 @@ private NavigationLaunchConfig createNavLaunchConfigInternal() {
     @CallSuper
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        preRootComponentRender();
         if (mainLayout() != NONE) {
             setContentView(mainLayout());
         }
@@ -156,6 +157,14 @@ protected void onCreate(Bundle savedInstanceState) {
         setupNavBar();
     }
 
+    /**
+     * Override this to perform any action that needs to be performed before the root component is first rendered.
+     * Some apps might only choose to initialize the container inside an activity. This method can act as a helper method for them to perform init.
+     */
+    protected void preRootComponentRender() {
+        // Do nothing here, override if needed.
+    }
+
     @Override
     protected void onDestroy() {
         super.onDestroy();