Activity continuation between electronic devices

A source electronic device, comprising:

• a processing subsystem;
• and
• a networking subsystem,
• wherein the processing subsystem and the networking subsystem are configured to perform operations for:
• receiving, at the source electronic device, activity information from a first application executing on the source electronic device;
• discarding, by the source electronic device, at least some of the activity information from the first application in response to a frequency at which the activity information is updated exceeding a threshold;
• sending, by the source electronic device, an activity message to a companion electronic device, the activity message comprising an indication of an activity performed in the first application at the source electronic device based on the activity information;
• receiving, from a companion electronic device, a request for extended activity data corresponding to the activity performed in the first application at the source electronic device;
• sending a notification to the first application to perform an update in response to receiving the request for the extended activity data;
• and
• transmitting, to the companion electronic device, the extended activity data in response to receiving the request for the extended activity data, wherein the extended activity data is acquired after updating the first application.

A non-transitory computer readable storage medium storing instructions that, when executed by a processing subsystem in a source electronic device, cause the source electronic device to perform a method comprising:

• receiving, at the source electronic device, activity information from a first application executing on the source electronic device;
• discarding, by the source electronic device, at least some of the activity information from the first application in response to a frequency at which the activity information is updated exceeding a threshold;
• sending, by the source electronic device, an activity message to a companion electronic device, the activity message comprising an indication of an activity performed in the first application at the source electronic device based on the activity information;
• receiving, from a companion electronic device, a request for extended activity data corresponding to the activity performed in the first application at the source electronic device;
• sending a notification to the first application to perform an update in response to receiving the request for the extended activity data;
• and
• transmitting, to the companion electronic device, the extended activity data in response to receiving the request for the extended activity data, wherein the extended activity data is acquired after updating the first application.