Android Logcat is empty when debug with device in android studio

Question

When I try to debug using android device in android studio Logcat shows nothing. But when I use emulator LogCat shows all the messages. How should view the Logcat messages w

Answer 1

Updated: I finally got the cause of the problem in my case. If I switch of my device's wifi, the log shows. Otherwise, the log will not show. I tried several times and it the always show full logs when I turn off my wifi.

My device is: Gsmart Classic, OS: Android OS, v5.1 (Lollipop). I met the problem when I updated the gradle build tool from 'com.android.tools.build:gradle:2.0.0-alpha1' to 'com.android.tools.build:gradle:2.0.0-alpha3' in Android Studio 2.0-preview. After trying all the solutions with no luck, I tried un applied all the instant run choices and re-apply it again. Then the logs show up.

Note: if it still doesn't help. You can as well try to switch back-and-forth the back ground process limit. Unfortunately, I couldn't reproduce the error.