Xamarin.Forms WebView不能与WebRTC一起使用 [英] Xamarin.Forms WebView not working with WebRTC
问题描述
我曾经从事过WebRTC项目,全部都可以在Web浏览器中工作,但是当我放入Application WebView时,它说未获得访问设备的权限
会显示一条消息.
I have worked on WebRTC project, it all works on Web Browser but when I put in in Application WebView, it said not authorized to access device
kind a message.
我阅读了有关在许可请求上授予访问权限的其他解决方案,对于我来说似乎还没有运气;仍然无法访问摄像头/麦克风
I read other solution on granting access on permission request, it seems no luck for me yet; still cannot access the camera/mic
以下是我的一些实现(C#语言):
Here's some of my implementations (C# language):
...
Control.SetWebChromeClient(new WebChromeClient(context))
...
//on WebChromeClient class
public override void OnPermissionRequest(PermissionRequest request)
{
mContext.RunOnUiThread(() =>
{
request.Grant(request.GetResources());
});
}
在Java Android中完成的相同实现,未授权
的结果相同.经过测试的设备位于Android 9&Android 10.
The same implementations done in Java Android, the same results not authorized
. Tested device is on Android 9 & Android 10.
使用的其他android权限:
Other android permissions used:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT" />
<uses-permission android:name="android.permission.CAPTURE_SECURE_VIDEO_OUTPUT" />
<uses-permission android:name="android.permission.CAPTURE_VIDEO_OUTPUT" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
任何在Java或C#上的实现都可以接受.希望您能提出一些建议.
Any implementation on Java or C# acceptable. Hope you can give some suggestions.
根据使用 PermissionPlugin
的@ WendyZang-MSFT建议,这是下面的代码.
As per @WendyZang-MSFT suggestion using PermissionPlugin
, here's the code below.
//The Utils class
public static class Utils
{
public static async Task<PermissionStatus> CheckPermissions(Permission permission)
{
var permissionStatus = await CrossPermissions.Current.CheckPermissionStatusAsync(permission);
bool request = false;
if (permissionStatus == PermissionStatus.Denied)
{
if (Device.RuntimePlatform == Device.iOS)
{
var title = $"{permission} Permission";
var question = $"To use this plugin the {permission} permission is required. Please go into Settings and turn on {permission} for the app.";
var positive = "Settings";
var negative = "Maybe Later";
var task = Application.Current?.MainPage?.DisplayAlert(title, question, positive, negative);
if (task == null)
return permissionStatus;
var result = await task;
if (result)
{
CrossPermissions.Current.OpenAppSettings();
}
return permissionStatus;
}
request = true;
}
if (request || permissionStatus != PermissionStatus.Granted)
{
var newStatus = await CrossPermissions.Current.RequestPermissionsAsync(permission);
if (!newStatus.ContainsKey(permission))
{
return permissionStatus;
}
permissionStatus = newStatus[permission];
if (newStatus[permission] != PermissionStatus.Granted)
{
permissionStatus = newStatus[permission];
var title = $"{permission} Permission";
var question = $"To use the plugin the {permission} permission is required.";
var positive = "Settings";
var negative = "Maybe Later";
var task = Application.Current?.MainPage?.DisplayAlert(title, question, positive, negative);
if (task == null)
return permissionStatus;
var result = await task;
if (result)
{
CrossPermissions.Current.OpenAppSettings();
}
return permissionStatus;
}
}
return permissionStatus;
}
}
这是我的运行时权限:
protected override void OnAppearing()
{
base.OnAppearing();
RunTimePermission();
}
public async void RunTimePermission()
{
var status = PermissionStatus.Unknown;
status = await CrossPermissions.Current.CheckPermissionStatusAsync(Permission.Camera);
if (status != PermissionStatus.Granted)
{
status = await Utils.CheckPermissions(Permission.Camera);
await Utils.CheckPermissions(Permission.Microphone);
}
status = await CrossPermissions.Current.CheckPermissionStatusAsync(Permission.Microphone);
if (status != PermissionStatus.Granted)
{
status = await Utils.CheckPermissions(Permission.Microphone);
}
}
在 PermissionPlugin
上运行似乎很好,因为它要求在Web上加载权限,但仍然显示错误消息:
Running on PermissionPlugin
seems good as it asking permission on web loaded, still got error said:
Requires MODIFY_AUDIO_SETTINGS and RECORD_AUDIO. No audio device will be available for recording
推荐答案
在Xamarin.Forms上,您可以使用权限插件. https://github.com/jamesmontemagno/PermissionsPlugin
On Xamarin.Forms, you could use Permissions Plugin. https://github.com/jamesmontemagno/PermissionsPlugin
在清单文件中添加权限:
Add permission in Manifest file:
<uses-permission android:name="android.permission.CAMERA" />
创建一个Utils.cs
Create a Utils.cs
public static class Utils
{
public static async Task<PermissionStatus> CheckPermissions(Permission permission)
{
var permissionStatus = await CrossPermissions.Current.CheckPermissionStatusAsync(permission);
bool request = false;
if (permissionStatus == PermissionStatus.Denied)
{
if (Device.RuntimePlatform == Device.iOS)
{
var title = $"{permission} Permission";
var question = $"To use this plugin the {permission} permission is required. Please go into Settings and turn on {permission} for the app.";
var positive = "Settings";
var negative = "Maybe Later";
var task = Application.Current?.MainPage?.DisplayAlert(title, question, positive, negative);
if (task == null)
return permissionStatus;
var result = await task;
if (result)
{
CrossPermissions.Current.OpenAppSettings();
}
return permissionStatus;
}
request = true;
}
if (request || permissionStatus != PermissionStatus.Granted)
{
var newStatus = await CrossPermissions.Current.RequestPermissionsAsync(permission);
if (!newStatus.ContainsKey(permission))
{
return permissionStatus;
}
permissionStatus = newStatus[permission];
if (newStatus[permission] != PermissionStatus.Granted)
{
permissionStatus = newStatus[permission];
var title = $"{permission} Permission";
var question = $"To use the plugin the {permission} permission is required.";
var positive = "Settings";
var negative = "Maybe Later";
var task = Application.Current?.MainPage?.DisplayAlert(title, question, positive, negative);
if (task == null)
return permissionStatus;
var result = await task;
if (result)
{
CrossPermissions.Current.OpenAppSettings();
}
return permissionStatus;
}
}
return permissionStatus;
}
}
用法:
var status = PermissionStatus.Unknown;
status = await CrossPermissions.Current.CheckPermissionStatusAsync(Permission.Camera);
if (status != PermissionStatus.Granted)
{
status = await Utils.CheckPermissions(Permission.Camera);
}
这是我之前完成的有关如何请求摄像机许可的代码示例. Xamarin-在WebView中请求相机权限
Here is a code sample i done before about how to request permission of camera. Xamarin - Requesting camera permissions in WebView
这篇关于Xamarin.Forms WebView不能与WebRTC一起使用的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!