public
abstract
class
PermissionRequest
extends Object
java.lang.Object | |
↳ | android.webkit.PermissionRequest |
This class defines a permission request and is used when web content
requests access to protected resources. The permission request related events
are delivered via onPermissionRequest(PermissionRequest)
and
onPermissionRequestCanceled(PermissionRequest)
.
Either grant()
or deny()
must be called in UI
thread to respond to the request.
New protected resources whose names are not defined here may be requested in
future versions of WebView, even when running on an older Android release. To
avoid unintentionally granting requests for new permissions, you should pass the
specific permissions you intend to grant to grant()
,
and avoid writing code like this example:
permissionRequest.grant(permissionRequest.getResources()) // This is wrong!!!See the WebView's release notes for information about new protected resources.
Constants | |
---|---|
String |
RESOURCE_AUDIO_CAPTURE
Resource belongs to audio capture device, like microphone. |
String |
RESOURCE_MIDI_SYSEX
Resource will allow sysex messages to be sent to or received from MIDI devices. |
String |
RESOURCE_PROTECTED_MEDIA_ID
Resource belongs to protected media identifier. |
String |
RESOURCE_VIDEO_CAPTURE
Resource belongs to video capture device, like camera. |
Public constructors | |
---|---|
PermissionRequest()
|
Public methods | |
---|---|
abstract
void
|
deny()
Call this method to deny the request. |
abstract
Uri
|
getOrigin()
Call this method to get the origin of the web page which is trying to access the restricted resources. |
abstract
String[]
|
getResources()
Call this method to get the resources the web page is trying to access. |
abstract
void
|
grant(String[] resources)
Call this method to grant origin the permission to access the given resources. |
Inherited methods | |
---|---|
From
class
java.lang.Object
|
String RESOURCE_AUDIO_CAPTURE
Resource belongs to audio capture device, like microphone.
Constant Value: "android.webkit.resource.AUDIO_CAPTURE"
String RESOURCE_MIDI_SYSEX
Resource will allow sysex messages to be sent to or received from MIDI devices. These messages are privileged operations, e.g. modifying sound libraries and sampling data, or even updating the MIDI device's firmware. Permission may be requested for this resource in API levels 21 and above, if the Android device has been updated to WebView 45 or above.
Constant Value: "android.webkit.resource.MIDI_SYSEX"
String RESOURCE_PROTECTED_MEDIA_ID
Resource belongs to protected media identifier. After the user grants this resource, the origin can use EME APIs to generate the license requests.
Constant Value: "android.webkit.resource.PROTECTED_MEDIA_ID"
String RESOURCE_VIDEO_CAPTURE
Resource belongs to video capture device, like camera.
Constant Value: "android.webkit.resource.VIDEO_CAPTURE"
Uri getOrigin ()
Call this method to get the origin of the web page which is trying to access the restricted resources.
Returns | |
---|---|
Uri |
the origin of web content which attempt to access the restricted resources. |
String[] getResources ()
Call this method to get the resources the web page is trying to access.
Returns | |
---|---|
String[] |
the array of resources the web content wants to access. |
void grant (String[] resources)
Call this method to grant origin the permission to access the given resources. The granted permission is only valid for this WebView.
Parameters | |
---|---|
resources |
String :
the resources granted to be accessed by origin, to grant
request, the requested resources returned by getResources()
must be equals or a subset of granted resources.
This parameter is designed to avoid granting permission by accident
especially when new resources are requested by web content.
|