1Android PermissionRequest Sample 2=================================== 3 4This sample demonstrates how to use the PermissionRequest API to 5securely provide access to restricted system features (such as a 6camera or microphone) from within a WebView. In this example, a dialog 7is created to allow users to explicitly approve or reject each 8request. 9 10Introduction 11------------ 12 13PermissionRequest can be used by setting up a custom WebChromeClient. 14 15```java 16mWebView.setWebChromeClient(mWebChromeClient); 17``` 18 19In you WebChromeClient implementation, you need to override 20[onPermissionRequest][1]. This method is called when the web content 21is requesting permission to access some resources, providing an 22opportunity to approve or reject the request. In this implementation, 23we display a dialog to allow the user to approve or reject any 24request. In other applications, you may want to implement a whitelist 25of allowed APIs. Also, override [onPermissionRequestCanceled][2] for 26handling cancellation of the PermissionRequest by the web content. 27 28When the user confirms or denies the request, you can respond back to 29the web content by [grant][3] or [deny][4] respectively. 30 31```java 32mPermissionRequest.grant(mPermissionRequest.getResources()); 33``` 34 35This sample provides the web content from the assets folder in the 36app. Since WebView is not allowed to use getUserMedia from a "file://" 37URL, the app uses the SimpleWebServer class to provide the content via 38"http://localhost". 39 40[1]: http://developer.android.com/reference/android/webkit/WebChromeClient.html#onPermissionRequest(android.webkit.PermissionRequest) 41[2]: http://developer.android.com/reference/android/webkit/WebChromeClient.html#onPermissionRequestCanceled(android.webkit.PermissionRequest) 42[3]: http://developer.android.com/reference/android/webkit/PermissionRequest.html#grant(java.lang.String[]) 43[4]: http://developer.android.com/reference/android/webkit/PermissionRequest.html#deny() 44 45Pre-requisites 46-------------- 47 48- Android SDK v21 49- Android Build Tools v21.1.1 50- Android Support Repository 51 52Screenshots 53------------- 54 55<img src="screenshots/main.png" height="400" alt="Screenshot"/> 56 57Getting Started 58--------------- 59 60This sample uses the Gradle build system. To build this project, use the 61"gradlew build" command or use "Import Project" in Android Studio. 62 63Support 64------- 65 66- Google+ Community: https://plus.google.com/communities/105153134372062985968 67- Stack Overflow: http://stackoverflow.com/questions/tagged/android 68 69If you've found an error in this sample, please file an issue: 70https://github.com/googlesamples/android-PermissionRequest 71 72Patches are encouraged, and may be submitted by forking this project and 73submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details. 74 75License 76------- 77 78Copyright 2014 The Android Open Source Project, Inc. 79 80Licensed to the Apache Software Foundation (ASF) under one or more contributor 81license agreements. See the NOTICE file distributed with this work for 82additional information regarding copyright ownership. The ASF licenses this 83file to you under the Apache License, Version 2.0 (the "License"); you may not 84use this file except in compliance with the License. You may obtain a copy of 85the License at 86 87http://www.apache.org/licenses/LICENSE-2.0 88 89Unless required by applicable law or agreed to in writing, software 90distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 91WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 92License for the specific language governing permissions and limitations under 93the License. 94