android studio 2.1.2
instant run requires 'tools | android | enable adb integration' to be enabled
解決方案：菜單欄，tools -> adnroid -> enable adb integration 就好了
error running app: instant run requires 'tools | android | enable adb integration' to be enabled.
![Android項目的依賴關系解析[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)