In logcat of Android Studio there is usually too much output, sometimes a developer would want to filter out these results so that he only gets logs from the application he is debugging. This can be achieved by the following method.
On the left side (right next to the tabs) is an icon with green arrows – it can be toggled on/off to display only logcat from the process selected in the list 🙂
as of android studio ver 0.4.5 u will get messages from the app that is running only by default. Log cat has a new option (ON by default) which creates an application filter automatically such that only the launched application’s output is shown