I've added debug strings (using Log.d()) and want to see them in context from the contents of logCat. The "save" icon for LogCat has a "Save selected items" hint, but there's got to be a quick way to just save the entire contents, or select the entire contents, but I don't see how to do it.
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