debugging - Not Able To Debug App In Android Studio

Question

I am making an app in Android Studio, now trying to debug it through adb. When I click on the word Android and the logo on the bottom bar, logcat comes up and recognizes my device. Then I see this:

What do I need to do to my app to make it "debuggable"?

FYI was developing this app in Eclipse before and adb worked fine.

Answer 1

I solved this issue after doing the following steps:

Go to Tools==>android==>Disable ADB integration and enable it again.

After that, unplug USB from device and plug in again.

Finally press shift + F9