add the basic modifications for embeding crosswalk

@@ -25,4 +25,5 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    implementation 'org.xwalk:xwalk_core_library:23.53.589.4'
 }

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.xuedianyun.embedcrosswalk">
 
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
+    <uses-sdk tools:overrideLibrary="org.xwalk.core" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"

@@ -3,11 +3,44 @@ package com.xuedianyun.embedcrosswalk;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 
+import org.xwalk.core.XWalkPreferences;
+import org.xwalk.core.XWalkView;
+
 public class MainActivity extends AppCompatActivity {
+    private XWalkView xWalkWebView;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+        xWalkWebView = findViewById(R.id.webView);
+        XWalkPreferences.setValue(XWalkPreferences.REMOTE_DEBUGGING, true);
+        xWalkWebView.load("http://www.xuedianyun.com", null);
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        if (xWalkWebView != null) {
+            xWalkWebView.pauseTimers();
+            xWalkWebView.onHide();
+        }
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        if (xWalkWebView != null) {
+            xWalkWebView.resumeTimers();
+            xWalkWebView.onShow();
+        }
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (xWalkWebView != null) {
+            xWalkWebView.onDestroy();
+        }
     }
 }

@@ -5,14 +5,10 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".MainActivity">
-
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+    <org.xwalk.core.XWalkView
+        android:id="@+id/webView"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:orientation="vertical" />
 
 </android.support.constraint.ConstraintLayout>
\ No newline at end of file

@@ -19,6 +19,9 @@ allprojects {
     repositories {
         google()
         jcenter()
+        maven {
+            url 'https://download.01.org/crosswalk/releases/crosswalk/android/maven2'
+        }
     }
 }