start real time
adb shell
su
adb logcat | findstr com.grabtaxi.driver2
filtering (sample)
logcat ActivityManager:I MyApp:D *:SHere's an example of a filter expression that suppresses all log messages,except those with the tag "ActivityManager", at priority "Info" or above, and all log messages with tag "MyApp", with priority "Debug" https://stackoverflow.com/questions/6854127/filter-logcat-to-get-only-the-messages-from-my-application-in-android