I made a plugin that helps you proberly setting up ida for debugging android apps.
NB! this is the light version for QT super version with alot of ekstra fetures visit
http://techbliss.org/threads/adb-qt-super-version.626/

Have adb from android sdk/platforms-tools in your path
copy android_server to adb folder
http://www.computerhope.com/issues/ch000549.htm
place Plugin in plugin folder.
find it under debugger menu.
follow the steps
Works Also with no file loaded in ida pro.
IF not working try copy the intire adb folder to ida root folder (including android_server)

includes also logcat

https://github.com/techbliss/ADB_Helper_For_ida_Pro

NB have a copy of android_server in ida root folder also