error "The connection to adb is down" when run an android app

I'm new with android development, and I have problems installing all the recent platform. I'm a java developer that I would like learning android.

I've installed all programs succesfully in windows xp sp3 (JDK 1.6 with environment vars created, eclipse 3.5, 3.6 & 3.7 well configured, Android SDK with all the features, devices, platform-tools, APi's, etc, and ADT Plugin 12 for eclipse with an emulator to API 8 -Target 2.2-), but, when I'm running an android project into eclipse (Run -> Android Application), the eclipse console show me: "The connection to adb is down, and a severe error has ocurred... You must restart adb and eclipse... Ensure that adb is in this path 'D:\Android\android-sdk-windows\platform-tools\adb.exe'" (or something similiar).

I'm very sure that the path is right, adb is correctly running on command-line, and the commands 'adb kill-server' and 'adb start-server' works fine, but doesn't solve my problem (like I've read in other answers).

The emulator, via Eclipse, not working, but if I start the emulator via Eclipse ADV Manager, emulator starts fine, but when I runs the android app, I take the same error.

I suppose that Eclipse can't start adb,but I don't know why.

Other issue, when I executed 'adb devices', console show me an empty list, no 'no devices' message, but when I plugged my HTC, adb is running fine in console, but Eclipse doesn't.

In addition, I also try restarting adb with Eclipse - Devices tab, but the list of devices are empty too.

An开发者_运维技巧yone can help me, please? I've read so much that my eyes are pixelated. xD

Best regards!!

PD: sorry, but my english is a bit poor ;)

in the DDMS perspective (if it doesn't show, add it by click window>open perspective>other...>DDMS) then click the triangle of the devices tab > reset adb. this works for me.

I finally resolved the problem, please see my blog

you can do this steps to solve the problem:

• task manager-> process
• right click on adb.exe and left click on "properties"

• check the path of the process:

  -if the path is like "Programs\android-sdk\platform-tools", which means it is the android sdk that is running this process.

  -if not, that means there is another process this is running adb.exe, you have to kill the process or service which runs adb.exe.(you can identify the process by the path)

I've had this problem too. The solution I've found is to kill eclipse, open up task manager and kill the adb.exe process. Then when you start eclipse again, that should also kick start adb and it should work from there.

Try the following steps :

- Close Eclipse IDE
- Go to the Android SDK platform-tools directory in Command Prompt
- run adb kill-server
- run adb start-server
- Now start Eclipse again.

Hope this may help you :)

In my case, in Windows7

1. Close all opened emulators
2. Go to task manager > processes and then click on adb.exe and press the button 'end process'.

3. Then go to command prompt go to plate-form tools and type

   adb start-server
   

4. Then run your application through eclipse.

It worked fine for me.

you try Open Task Manager > Processes > eclipse.exe > End Process > restart eclipse

In my case the problem was the FIREWALL!.Turn off your windows firewall , Then restart adb and eclipse from task-manager