The Android Debugging Bridge (ADB) is a command line tool that allows communication between an Android device and development tools. There are 5 types of logs that can be outputted to the logging system: verbose, debug, information, warning, and error. Logcat is used to view the logs and acts as a "cat" or concatenation of the logs from the logging system. An example is provided of using Toast to display a message when a fragment is destroyed.

1. Debugging Part 1

2. Android Debugging Bridge (ADB)
a command line tool available in Android SDK
using to connect between a device and the
development tools
adb

3. Log
• Fire out something to logging system
• There are 5 types of logging
• v(String, String) (verbose)
• d(String, String) (debug)
• i(String, String) (information)
• w(String, String) (warning)
• e(String, String) (error)
Logging
System

4. Logcat
= cat of log
(catenate)
Logging
System
logcat

5. Log & Logcat Example

6. Toast
Toast.makeText(this,
“MyFragmentC.onDestroyView()”,
Toast.LENGTH_SHORT)
.show();