You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
3.7 KiB
104 lines
3.7 KiB
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!--
|
|
Copyright 2014 The Android Open Source Project
|
|
|
|
Licensed 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.
|
|
-->
|
|
<sample>
|
|
<name>PermissionRequest</name>
|
|
<group>Content</group>
|
|
<package>com.example.android.permissionrequest</package>
|
|
|
|
<minSdk>21</minSdk>
|
|
|
|
<strings>
|
|
<intro>
|
|
<![CDATA[
|
|
This sample shows how to handle PermissionRequest coming from web apps inside of a
|
|
WebView.
|
|
]]>
|
|
</intro>
|
|
</strings>
|
|
|
|
<template src="base"/>
|
|
<template src="FragmentView"/>
|
|
<common src="logger"/>
|
|
<common src="activities"/>
|
|
|
|
<metadata>
|
|
<status>PUBLISHED</status>
|
|
<categories>Content</categories>
|
|
<technologies>Android</technologies>
|
|
<languages>Java</languages>
|
|
<solutions>Mobile</solutions>
|
|
<level>INTERMEDIATE</level>
|
|
<icon>screenshots/icon_web.png</icon>
|
|
<screenshots>
|
|
<img>screenshots/image1.png</img>
|
|
<img>screenshots/image2.png</img>
|
|
</screenshots>
|
|
<api_refs>
|
|
<android>android.webkit.PermissionRequest</android>
|
|
<android>android.webkit.WebView</android>
|
|
<android>android.webkit.WebChromeClient</android>
|
|
</api_refs>
|
|
|
|
<description>
|
|
<![CDATA[
|
|
This sample demonstrates how to use the PermissionRequest API to
|
|
securely provide access to restricted system features (such as a
|
|
camera or microphone) from within a WebView. In this example, a dialog
|
|
is created to allow users to explicitly approve or reject each
|
|
request.
|
|
]]>
|
|
</description>
|
|
|
|
<intro>
|
|
<![CDATA[
|
|
PermissionRequest can be used by setting up a custom WebChromeClient.
|
|
|
|
```java
|
|
mWebView.setWebChromeClient(mWebChromeClient);
|
|
```
|
|
|
|
In you WebChromeClient implementation, you need to override
|
|
[onPermissionRequest][1]. This method is called when the web content
|
|
is requesting permission to access some resources, providing an
|
|
opportunity to approve or reject the request. In this implementation,
|
|
we display a dialog to allow the user to approve or reject any
|
|
request. In other applications, you may want to implement a whitelist
|
|
of allowed APIs. Also, override [onPermissionRequestCanceled][2] for
|
|
handling cancellation of the PermissionRequest by the web content.
|
|
|
|
When the user confirms or denies the request, you can respond back to
|
|
the web content by [grant][3] or [deny][4] respectively.
|
|
|
|
```java
|
|
mPermissionRequest.grant(mPermissionRequest.getResources());
|
|
```
|
|
|
|
This sample provides the web content from the assets folder in the
|
|
app. Since WebView is not allowed to use getUserMedia from a "file://"
|
|
URL, the app uses the SimpleWebServer class to provide the content via
|
|
"http://localhost".
|
|
|
|
[1]: http://developer.android.com/reference/android/webkit/WebChromeClient.html#onPermissionRequest(android.webkit.PermissionRequest)
|
|
[2]: http://developer.android.com/reference/android/webkit/WebChromeClient.html#onPermissionRequestCanceled(android.webkit.PermissionRequest)
|
|
[3]: http://developer.android.com/reference/android/webkit/PermissionRequest.html#grant(java.lang.String[])
|
|
[4]: http://developer.android.com/reference/android/webkit/PermissionRequest.html#deny()
|
|
]]>
|
|
</intro>
|
|
</metadata>
|
|
|
|
</sample>
|