Android Inter-App Communication
Before a partner app attempts to communicate with an installation of the Authenticator App, it should determine if
the app has been installed on the device. The
getPackageInfo methods of the
class can be used to do this.
The partner should use the
startActivityForResult method of the
Activity class to initiate
communication with the Authenticator App installation.
onActivityResult method in the partner app activity is called when the Authenticator App
If the Authenticator App installation crashed or was unable to complete the requested action, the
value will be
Activity.RESULT_CANCELED. The partner should show an error view to the user.
If the Authenticator App installation was able to complete the requested action, the
resultCode argument value will be
Activity.RESULT_OK and the
requestCode argument value will match the value given in the call to the
startActivityForResult method. The partner app should continue the current activity.
The following example shows how communication with an Authenticator App installation could be initiated from a partner app activity.
Intent intent = new Intent(); // Identify the Authenticator App package name and component. intent.setClassName( "<authenticator-package-name>", "<authenticator-activity-class-name>" ); // Indicate the active session. intent.putExtra("ID", "<session-id>"); startActivityForResult(intent, requestCode);