Jan 3, 2024 · The standard log view displays each log's date, time process and thread ID, tag, package name, priority, and the message associated with it. By default, message lines are not wrapped in the log view but you can use the Soft-Wrap option from the Logcat toolbar.

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.

Aug 30, 2022 · LogCat Window is the place where various messages can be printed when an application runs. Suppose, you are running your application and the program crashes, unfortunately. Then, Logcat Window is going to help you to debug the output by collecting and viewing all the messages that your emulator throws.

Dec 8, 2024 · Logcat is a built-in tool in Android Studio that shows logs from the device or emulator, such as system messages, stack traces, or custom logs written by developers. It is especially useful for: Debugging your application.

May 9, 2025 · Logcat is the essential tool for viewing, filtering, and analyzing Android system and application logs. Allows you to debug errors, monitor performance, and diagnose problems from Android Studio, ADB, or specialized apps. Learn about log levels, advanced filters, output customization, and best practices for leveraging Logcat professionally.

May 26, 2022 · The Log.d() method is used to display messages with the Debug level priority on the Logcat. The method requires two arguments: The tag argument is the tag of the message; The msg argument is the message to display on the Logcat; Let’s see an example of the method in action. Add the following Log.d() call in your onCreate() method:

Jun 28, 2016 · This tutorial describes how to create and view log statements in Android applications. 1. Logging in Android. 1.1. The log system of Android. The Android system uses a centralized system for all logs. The application programmer can also write custom log messages.

Jan 24, 2018 · In Android, Logging works as a diagnostic technique used by developers. It basically provides an insight of what’s happening in your application. We can write Log messages in the code with the help of LOG class and the messages get displayed in the Logcat window on running the application.

May 28, 2013 · Android has its own method of printing messages (called logs) to the console, known as the LogCat. When you want to print something to the LogCat, you use a Log object, and specify the category of message. The main options are: You print a message by using a Log statement in your code, like the following example:

API for sending log output. Generally, you should use the Log.v(), Log.d(), Log.i(), Log.w(), and Log.e() methods to write logs. You can then view the logs in logcat. The order in terms of verbosity, from least to most is ERROR, WARN, INFO, DEBUG, VERBOSE. Tip: A good convention is to declare a TAG constant in your class: