setOnReward method
Registers a reward callback to be invoked when the OfferWall is exited by the user.
Implementation
void setOnReward(void Function(double) onReward) => _onReward = onReward;
Registers a reward callback to be invoked when the OfferWall is exited by the user.
void setOnReward(void Function(double) onReward) => _onReward = onReward;