要访问Android Webview中的相机功能? [英] Access camera functionality in Android webview?

问题描述

我正在构建一个Native-Android/WebView-App，该代码托管在远程服务器上(使用HTML和Javascript).

I'm building a Native-Android/WebView-App thats code is hosted on a remote server (in HTML and Javascript).

Web应用程序具有通过HTML表单，输入请求启动手机摄像头的功能:

The Web App has a function that launches the phone's camera via a HTML form, input request:

<form action="#" method="post" enctype="multipart/form-data" >
<input name="image" type="file" accept="image/*" capture/>
</form>

此功能在标准的Android Web浏览器中可以很好地工作，但在Native App WebView浏览器中则不能很好地工作.

This feature works perfectly well in the standard Android web browser but not in the Native App WebView browser.

我已在本机"应用清单中启用了以下权限，但仍无法启动相机:

I have enabled the following permissions in the Native app manifest but still can't get the camera to launch:

<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />

无法使用此功能，我会接受能够访问照相机胶卷，以便用户可以简单地选择他们已经拍摄的照片，但是我宁愿像在标准Web浏览器中那样启动照相机.

Failing getting this feature to work, I would accept being able to access the camera roll instead so that a user could simply select a photo they have already taken but I would rather launch the camera the way it does in the standard web browser.

任何人都可以帮忙吗?

Can anyone help please?

推荐答案

从Webview访问Camera时，它会请求权限，我们可以通过覆盖onPermissionRequest来授予它们.另外，请务必注意运行时权限.

While accessing Camera from Webview, it asks for permissions and we can grant them by overriding the onPermissionRequest. Also make sure to take care of runtime permissions.

webView.setWebChromeClient(new WebChromeClient() {
        @Override
        public void onPermissionRequest(PermissionRequest request) {
            request.grant(request.getResources());
        }
    });

此外，请确保禁用此属性

Also, make sure this property is disabled

webSettings.setMediaPlaybackRequiresUserGesture(false);

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