My Mac is invisible to my iPhone on AirDrop I want to send a photo from my iPhone (iOS 8) to my Mac (Yosemite) via AirDrop.
Though my iPhone appears on my Mac,
Mac does not appear on iPhone.
How can I fix this?

On both devices, I've selected "Allow me to be discovered by: Everyone".
I find that when AirDrop stops working even when both devices are within bluetooth range and on the same Wi-Fi network, I often have to reboot both devices. There may be another way, but rebooting both has almost always fixed it. Also of note: if you have any firewall enabled, those settings can interfere as well.