The Console and LogCat printouts stopped working in Eclipse with the Android Emulator.
I'm getting the following Exception in the Console
[2011-11-10 11:04:58 - Unexpected error while launching logcat. Try reselecting the device.]device not found com.android.ddmlib.AdbCommandRejectedException: device not found at com.android.ddmlib.AdbHelper.setDevice(AdbHelper.java:736) at com.android.ddmlib.AdbHelper.executeRemoteCommand(AdbHelper.java:373) at com.android.ddmlib.Device.executeShellCommand(Device.java:319) at com.android.ddmuilib.logcat.LogCatReceiver$1.run(LogCatReceiver.java:100) at java.lang.Thread.run(Unknown Source)
Usually when the emulator is loading or updating an apk there's a printout in the Console telling the status. Now the Console is just blank.
I made sure the emulator is selected in the DDMS Tab.
I tried deleting and recreating the emulator in the AVD Manager. I restarted eclipse and the computer. I also updated all of the android and eclipse software in hope that the problem may get fixed. But, to no avail.
It may be related to a problem I had in my code yesterday. There was an unending loop in my code, so I had to stop the emulator mid code running.
I was having a similar error and it was driving me crazy. I just got it to work by doing the following steps:
- In a shell or command prompt run: adb kill-server
- Unplug the USB cable from the device and plug it back in.
- Open the devices view (Window -> Show View -> Other -> Android -> Devices)
- Click on the device on the android devices view.
I tested this for the emulator and it works if you relaunch the emulator instead of step 2.
Another way I got it to work was to restart Eclipse. But that's not usually ideal.
Note: Logcat would stop working any time I disconnected the usb cable from my android device (similar to killing an emulator).
I recognize this might not fix your initial issue, but it might help others who stumble on this question.
I also had the same problem, install the SDK even three times as TT, but the solution is to go to the folder android-sdk-windows, then platform-tools, and double click adb and ready!
Clean project with Project/Clean...
deleting the emulator and creating a new one did the job for me. Even in my case a faulty code or a secret infinite loop, i think is the problem. i tried out something and logcat failed to boot up since then.
Most likely you have 2 instances of Eclipse running (I did). (On Windows) Exit eclipse then check with the Task Manager if there is another eclipse. End it as well as any image name "adb".
来源：https://stackoverflow.com/questions/8075378/logcat-console-stopped-working-with-eclipse-android-emulator