How do I write outputs to the Log in Android?

Question

I want to write some debugging output to the log to review it with logcat.

If I write something to System.out this is already displayed in logcat.

What is the clean way to write to the log and add levels and tags to my output?

Answer 1

Use android.util.Log and the static methods defined there (e.g., e(), w()).

Answer 2

Look into android.util.Log. It lets you write to the log with various log levels, and you can specify different tags to group the output. For example

Log.w("myApp", "no network")

will output a warning with the tag myApp and the message no network.