Android – monitor startactivity in logcat

I remember that when using Android 2. X that day, the application can use read_ Logs permission monitors logcat. The application can even detect the activation from logcat. However, for later versions of Android, this has stopped. Who knows which version of Android has stopped this, specifically to prevent it from doing what? Does logcat just stop displaying these intents, or can applications no longer view logcat information that does not belong to them?

thank you!

resolvent:

Packaging in for safety reasons Sand@R_ 648_ Android 4.1 (Jerry bean) logcat in 2419 @ starts, which means that the application is only allowed to read the logs generated by the application itself