From e9284c8fd9d23f28a91822c58a3cd676bd1a60d4 Mon Sep 17 00:00:00 2001
From: Swordsman-Inaction <ipzlkmy@gmail.com>
Date: Wed, 15 Jun 2016 20:14:31 +0800
Subject: [PATCH 1/3] Feature(Handle Back Key for Android)

---
 src/Reducer.js |  6 ++++++
 src/Router.js  | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/src/Reducer.js b/src/Reducer.js
index 510d72897..001ba7cd4 100644
--- a/src/Reducer.js
+++ b/src/Reducer.js
@@ -22,6 +22,7 @@ import {
 
 import { assert } from './Util';
 import { getInitialState } from './State';
+import { Platform } from 'react-native';
 
 // WARN: it is not working correct. rewrite it.
 function checkPropertiesEqual(action, lastAction) {
@@ -72,6 +73,11 @@ function inject(state, action, props, scenes) {
     case POP_ACTION2:
     case POP_ACTION: {
       assert(!state.tabs, 'pop() operation cannot be run on tab bar (tabs=true)');
+
+      if (Platform.OS === 'android') {
+        assert(state.index > 0, 'You are already in the root scene.')
+      }
+      
       if (state.index === 0) {
         return state;
       }
diff --git a/src/Router.js b/src/Router.js
index 43ff28384..04ad9965e 100644
--- a/src/Router.js
+++ b/src/Router.js
@@ -10,6 +10,7 @@ import React, {
   Component,
   PropTypes,
 } from 'react';
+import { BackAndroid } from 'react-native'
 import NavigationExperimental from 'react-native-experimental-navigation';
 
 import Actions from './Actions';
@@ -98,6 +99,16 @@ class Router extends Component {
   render() {
     if (!this.state.reducer) return null;
 
+    BackAndroid.addEventListener('hardwareBackPress', () => {
+      try {
+        Actions.pop();
+        return true;
+      }
+      catch (err) {
+        return false;
+      }
+    })
+
     return (
       <NavigationRootContainer
         reducer={this.state.reducer}

From 97baa50a211a0f2ff411ea570977643c2743397d Mon Sep 17 00:00:00 2001
From: Swordsman-Inaction <ipzlkmy@gmail.com>
Date: Wed, 15 Jun 2016 20:15:53 +0800
Subject: [PATCH 2/3] Fix(format)

---
 src/Reducer.js | 4 ++--
 src/Router.js  | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Reducer.js b/src/Reducer.js
index 001ba7cd4..0c63e4f29 100644
--- a/src/Reducer.js
+++ b/src/Reducer.js
@@ -75,9 +75,9 @@ function inject(state, action, props, scenes) {
       assert(!state.tabs, 'pop() operation cannot be run on tab bar (tabs=true)');
 
       if (Platform.OS === 'android') {
-        assert(state.index > 0, 'You are already in the root scene.')
+        assert(state.index > 0, 'You are already in the root scene.');
       }
-      
+
       if (state.index === 0) {
         return state;
       }
diff --git a/src/Router.js b/src/Router.js
index 04ad9965e..11736b858 100644
--- a/src/Router.js
+++ b/src/Router.js
@@ -10,7 +10,7 @@ import React, {
   Component,
   PropTypes,
 } from 'react';
-import { BackAndroid } from 'react-native'
+import { BackAndroid } from 'react-native';
 import NavigationExperimental from 'react-native-experimental-navigation';
 
 import Actions from './Actions';
@@ -107,7 +107,7 @@ class Router extends Component {
       catch (err) {
         return false;
       }
-    })
+    });
 
     return (
       <NavigationRootContainer

From b8e7f5ba1ca68a118839e794857b44c228694f26 Mon Sep 17 00:00:00 2001
From: Swordsman-Inaction <ipzlkmy@gmail.com>
Date: Wed, 15 Jun 2016 20:24:25 +0800
Subject: [PATCH 3/3] Fix(format)

---
 src/Router.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/Router.js b/src/Router.js
index 11736b858..751d352c0 100644
--- a/src/Router.js
+++ b/src/Router.js
@@ -103,8 +103,7 @@ class Router extends Component {
       try {
         Actions.pop();
         return true;
-      }
-      catch (err) {
+      } catch (err) {
         return false;
       }
     });