onPlatformMessage property
Called whenever this window receives a message from a platform-specific plugin.
The name
parameter determines which plugin sent the message. The data
parameter is the payload and is typically UTF-8 encoded JSON but can be
arbitrary data.
Message handlers must call the function given in the callback
parameter.
If the handler does not need to respond, the handler should pass null to
the callback.
The framework invokes this callback in the same zone in which the callback was set.
Implementation
PlatformMessageCallback get onPlatformMessage => _onPlatformMessage;
Implementation
set onPlatformMessage(PlatformMessageCallback callback) {
_onPlatformMessage = callback;
_onPlatformMessageZone = Zone.current;
}