How to save LogCat contents to file?

To save the Log cat content to the file, you need to redirect to the android sdk's platform tools folder and hit the below command

adb logcat > logcat.txt

In Android Studio, version 3.6RC1, file will be created of the name "logcat.txt" in respective project folder. you can change the name according to your interest. enjoy

In addition to answer by Dinesh Prajapati, Use

 adb -d logcat <your package name>:<log level>

where -d is for device and you may also choose -e instead for emulator log and log level is a/d/i/v/e/w etc.

Now your command goes like:

adb -d logcat com.example.example:V > logfileName_WithPath.txt