single button

Hello, How can i select single Button, change image. what i mean then i press 2 Button, i need to change button1 image!. i have this code: sender.tag. But that only change button 2 not button 1. Powered by WPeMatico

Warning Missing files …/DerivedData/

I am continuing to receive the following three warnings: “Missing file ..projectname.xcindex/db.xcindexdb is missing from working copy db.xcindexdb” “Missing file …projectname.xcindex/db.xcindexdb-wal is missing from working copy db.xcindexdb-wal” “Missing file …projectname.xcindex/db.xcindexdb-shm is missing from working copy db.xcindexd-shm”   These files do exist so the warning doesn’t…