Eclipse is acting strange. It shows every single log item as a warning (orange). Furthermore, each one's Time is '?:??', PID is '?', and Tag is also '?'.
Screenshot below
Your Eclipse or SDK seems to be outdated, just update it.
You are probably testing your app with an Android version (4.1??) which isn't fully supported by your current SDK version.
Please make sure that the device is online and it is selected in the DDMS and this is the one you are installing your application on.
I had this problem too, I found the solution here - try to update you SDK ! In Eclipse go to 'Android SDK Manager' and try to update 'Android SDK Tools' & 'Android SDK Platform-tools'. Note: It may ask you to update your ADT as well...
By the way, it's happend to me when I updated my android device to 4.1 Jelly Beans
Hope that helps,
Cheers!
来源：https://stackoverflow.com/questions/11494257/why-is-logcat-showing-all-items-as-warnings-orange