Stop Android File Transfer Popping Up Bit annoying that Android File Transfer pops up whenever I connect my Nexus 7 to the Macbook. Is there any way to keep it active but hidden initially?
In my case the Android File Transfer App made my whole Macbook touch input freeze, so I had to find a away around this problem. The solution from this page worked: https://cooltrainer.org/taming-android-file-transfer-on-mac-os-x/


Kill all Android File Transfer (AFT) processes using Activity Monitor
Remove AFT from your login items
Remove the agent with the following terminal command: 

rm -r ~/Library/Application\ Support/Google/Android\ File\Transfer/Android\ File\ Transfer\ Agent.app

Rename the agents copy with:

cd /Applications/Android\ File\ Transfer.app/Contents/Resources 
mv Android\ File\ Transfer\ Agent.app Android\ File\ Transfer\Agent.app.disable