From 4febe2a87cacecbbf2aa51bbde6d64bca32d1806 Mon Sep 17 00:00:00 2001
From: Hristo Hristov <hristo.hristov@telerik.com>
Date: Wed, 6 Apr 2016 16:29:08 +0300
Subject: [PATCH] =?UTF-8?q?FragmentClass=20instance=20is=20cached=20so=20t?=
 =?UTF-8?q?hat=20JS=20part=20does=20not=20die=20before=20=E2=80=A6?=
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* FragmentClass instance is cached so that JS part does not die before native counter part.

* Fix tslint error.
---
 ui/frame/frame.android.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ui/frame/frame.android.ts b/ui/frame/frame.android.ts
index a98c29a10..5393c585b 100644
--- a/ui/frame/frame.android.ts
+++ b/ui/frame/frame.android.ts
@@ -7,7 +7,6 @@ import {View} from "ui/core/view";
 import {Observable} from "data/observable";
 import * as application from "application";
 import * as types from "utils/types";
-import * as utils from "utils/utils";
 
 global.moduleMerge(frameCommon, exports);
 
@@ -19,6 +18,7 @@ var IS_BACK = "_isBack";
 var NAV_DEPTH = "_navDepth";
 var CLEARING_HISTORY = "_clearingHistory";
 var FRAMEID = "_frameId";
+var FRAGMENT = "_FRAGMENT";
 
 var navDepth = -1;
 
@@ -197,6 +197,9 @@ export class Frame extends frameCommon.Frame {
         newFragment.frame = this;
         newFragment.entry = backstackEntry;
 
+        // Cahce newFragment at backstackEntry instance so that it cannot die while backstackEntry is alive.
+        backstackEntry[FRAGMENT] = newFragment;
+
         backstackEntry[BACKSTACK_TAG] = newFragmentTag;
         backstackEntry[NAV_DEPTH] = navDepth;
 
@@ -664,7 +667,7 @@ class FragmentClass extends android.app.Fragment {
     public onDestroy(): void {
         trace.write(`${this.getTag()}.onDestroy()`, trace.categories.NativeLifecycle);
         super.onDestroy();
-        utils.GC();
+        this.entry[FRAGMENT] = undefined;
     }
 }