<!--
# license: Licensed to the Apache Software Foundation (ASF) under one
#         or more contributor license agreements.  See the NOTICE file
#         distributed with this work for additional information
#         regarding copyright ownership.  The ASF licenses this file
#         to you under the Apache License, Version 2.0 (the
#         "License"); you may not use this file except in compliance
#         with the License.  You may obtain a copy of the License at
#
#           http://www.apache.org/licenses/LICENSE-2.0
#
#         Unless required by applicable law or agreed to in writing,
#         software distributed under the License is distributed on an
#         "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
#         KIND, either express or implied.  See the License for the
#         specific language governing permissions and limitations
#         under the License.
-->

|iOS 9.3|iOS 10.0|Travis CI|
|:-:|:-:|:-:|
|[![Build Status](http://cordova-ci.cloudapp.net:8080/buildStatus/icon?job=cordova-periodic-build/PLATFORM=ios-9.3,PLUGIN=cordova-plugin-wkwebview-engine)](http://cordova-ci.cloudapp.net:8080/job/cordova-periodic-build/PLATFORM=ios-9.3,PLUGIN=cordova-plugin-wkwebview-engine/)|[![Build Status](http://cordova-ci.cloudapp.net:8080/buildStatus/icon?job=cordova-periodic-build/PLATFORM=ios-10.0,PLUGIN=cordova-plugin-wkwebview-engine)](http://cordova-ci.cloudapp.net:8080/job/cordova-periodic-build/PLATFORM=ios-10.0,PLUGIN=cordova-plugin-wkwebview-engine/)|[![Build Status](https://travis-ci.org/apache/cordova-plugin-wkwebview-engine.svg?branch=master)](https://travis-ci.org/apache/cordova-plugin-wkwebview-engine)|

Cordova WKWebView Engine
======

This plugin makes `Cordova` use the `WKWebView` component instead of the default `UIWebView` component, and is installable only on a system with the iOS 9.0 SDK. 

In iOS 9, Apple has fixed the [issue](http://www.openradar.me/18039024) present through iOS 8 where you cannot load locale files using file://, and must resort to using a local webserver. **However, you are still not able to use XHR from the file:// protocol without [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS) enabled on your server.**

Installation
-----------

This plugin needs cordova-ios >4.0.0.

To install the current release:

    cordova create wkwvtest my.project.id wkwvtest
    cd wkwvtest
    cordova platform add ios@4
    cordova plugin add cordova-plugin-wkwebview-engine

To test the development version:

    cordova create wkwvtest my.project.id wkwvtest
    cd wkwvtest
    cordova platform add https://github.com/apache/cordova-ios.git#master
    cordova plugin add https://github.com/apache/cordova-plugin-wkwebview-engine.git#master

You also must have at least Xcode 7 (iOS 9 SDK) installed. Check your Xcode version by running:

    xcode-select --print-path

Required Permissions
-----------
WKWebView may not fully launch (the deviceready event may not fire) unless if the following is included in config.xml. This should already be installed by Cordova in your platform config.xml when the plugin is installed.

#### config.xml

```xml
<feature name="CDVWKWebViewEngine">
  <param name="ios-package" value="CDVWKWebViewEngine" />
</feature>

<preference name="CordovaWebViewEngine" value="CDVWKWebViewEngine" />
```

Notes
------
This plugin creates a shared `WKProcessPool` which ensures the cookie sharing happens correctly across `WKWebView` instances. `CDVWKProcessPoolFactory` class can be used to obtain the shared `WKProcessPool` instance if app creates `WKWebView` outside of this plugin.

On an iOS 8 system, Apache Cordova during runtime will switch to using the UIWebView engine instead of using this plugin. If you want to use WKWebView on both iOS 8 and iOS 9 platforms, you will have to resort to using a local webserver.

We have an [experimental plugin](https://github.com/apache/cordova-plugins/tree/wkwebview-engine-localhost) that does this. You would use that plugin instead of this one.

Application Transport Security (ATS) in iOS 9
-----------

Starting with [cordova-cli 5.4.0](https://www.npmjs.com/package/cordova), it will support automatic conversion of the [&lt;access&gt;](http://cordova.apache.org/docs/en/edge/guide/appdev/whitelist/index.html) tags in config.xml to Application Transport Security [ATS](https://developer.apple.com/library/prerelease/ios/documentation/General/Reference/InfoPlistKeyReference/Articles/CocoaKeys.html#//apple_ref/doc/uid/TP40009251-SW33) directives. 

Upgrade to at least version 5.4.0 of the cordova-cli to use this new functionality.

Enabling Navigation Gestures ("Swipe Navigation")
-----------

In order to allow swiping backwards and forwards in browser history like Safari does, you can set the following preference in your `config.xml`:

```xml
<preference name="AllowBackForwardNavigationGestures" value="true" />
```

Limitations
--------

If you are upgrading from UIWebView, please note the limitations of using WKWebView as outlined in our [issue tracker](https://issues.apache.org/jira/issues/?jql=project%20%3D%20CB%20AND%20labels%20%3D%20wkwebview-known-issues).

Apple Issues
-------

The `AllowInlineMediaPlayback` preference will not work because of this [Apple bug](http://openradar.appspot.com/radar?id=6673091526656000). This bug [has been fixed](https://issues.apache.org/jira/browse/CB-11452) in [iOS 10](https://twitter.com/shazron/status/745546355796389889). 


Supported Platforms
-------------------

- iOS