Android device offline in Device Chooser

I have been searching for a few days now, here are the specs

• OS : Mac osx 10.11 (El Captain)
• Android SDK : recently downloaded
• Problem : My device is found but offline in device chooser

Here are a few steps I took to shoot the problem down

1. I connect the device with my Mac
2. I check in ANDROID_HOME/platform-tools/adb devices
3. it shows my devices as 0123456789ABCDEF device
4. I launch my eclipse
5. start running my android application
6. My device chooser shows that device as offline
7. I again go to terminal and ./adb devices
8. Bang! it is offline 0123456789ABCDEF offline
9. when I shut down eclipse and restart adb server, -kill-server and start-server the device shows up in my Terminal correctly but when I launch my eclipse, it is offline again both in eclipse and terminal, sounds like it does not like my eclipse or something,

Please help, I am fairly new to mac and android. I tried all the recipe -kill-server, start-server, reboot device, no luck, The device I tried used, to work on windows machine however,

Copyright Notice：Content Author:「darkcloudbird」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/38157719/android-device-offline-in-device-chooser