Now that the Android developer tools for Eclipse is being retired, I just decided give Android Studio a chance. Here are some shortcuts:

• “Quick fix”: Alt+Enter
• Format current file: Cmd+Alt+L
• Command dialog (like Cmd+3 in Eclipse): Cmd+Shift+A
• Opening file by name: Cmd+Shift+O
• Opening java class by name: Cmd+O
• Opening a symbol: Cmd+Alt+O
• Navigate back: Cmd+Alt+Left arrow
• Find references (“Find usage” in intellij lingo): Alt+F7
• Search in path (Ctrl+H in eclipse): Cmd+Shift+F
• File structure (list fields and methods in class,Cmd+O in eclipse): Cmd+F12
• Goto super class: Cmd+u

See also Android Studio Tips and Tricks on developer.android.com.’