SetExtAppButtonResources

Variables
final int	MSG_RI_SET_EXTAPP_RESOURCES = 2001

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Detailed Description

Set the resources for an ExtApp Button

An ExtApp button is a button shown on the main navigation screens that allows the user to switch to an external application.

The icon for the button must be provided through an android FileProvider class to be able to grant the navigator app access to the file (needed for Android >= 10). The steps to grant a permission is as following:

• Create an xml file in the res/xml folder of your project and list all directories in your app namespace that should be able to be accessed from outside, see the res/xml/filepaths.xml file in this project as an example.
• Add a FileProvider to the manifest file (in the application section). Set the android:resource to the above created xml file.

<provider android:name="androidx.core.content.FileProvider" android:authorities="com.ptvag.navigation.ritest.fileprovider" android:exported="false" android:grantUriPermissions="true"> <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/filepaths"></meta-data> </provider> *

• Create a file object with the file you want to transfer/share
• Create an uri for that file with FileProvider.getUriForFile()
• Grant access permissions to this file for a specific package (here we use the navigator as the receiver) with getContext().grantUriPermission(). Use FLAG_GRANT_READ_URI_PERMISSION for minimal reading permission
• If wanted, you can revoke the permission after the navigator sent back the response that the bcr was loaded (the navigator will copy the file to the navigator (files with the same name will be overwritten) to be able to access it, and therefore it is save to revoke the permission after the navigator response).

For more implementation details, please see the RITest demo app.

Sending bundle:

Key	Value	Type	Info
IconName	The name of the ExtApp icon	String
ClassName	The class name of the external app	String
PackageName	The package name of the external app	String

Returned error codes:

RI_ERROR_NONE if everything is ok.
RI_ERROR_RI_DISABLED if the Remote Interface service is disabled and/or not licensed.
RI_ERROR_NOT_INITIALIZED if the Remote Interface service is not initialized yet.
RI_ERROR_NO_LICENSE if the navigator has no valid license