Android Tutorials - Herong's Tutorial Examples - v3.05, by Herong Yang
Viewing Activity Log File with "cat" Command in "adb shell"
This section provides a tutorial example on how to test ActivityLog application, find the log file with the 'adb shell' window, and view the log file content with the 'cat' shell command.
Continue from the previous tutorial, I did the following to test my ActivityLog application:
1. Build and install ActivityLog on my Android emulator using the Apache Ant tool.
2. Run the ActivityLog on the emulator. The "Activity created" message displayed on the screen. So the user interface behaves as I expected.
3. Run "adb shell" in a command window to find the log file, which should be located in the application's private file folder, /data/data/<package-name>/files, based what we learned from the previous chapter:
C:\herong>\local\android-sdk-windows\platform-tools\adb shell # cd /data/data/com.herongyang.activity/files cd /data/data/com.herongyang.activity/files # ls -l ls -l -rw-rw---- u0_a61 u0_a61 34 2015-03-01 22:46 Activity.log
4. Verify the log file content with "cat" shell command:
# cat Activity.log cat Activity.log Activity created ----------------
This confirms that ActivityLog has created the log file correctly. See a similar "adb shell" screenshot below:
Of course, you can delete the log file with "rm Activity.log" shell command, if needed.
See next tutorials on adding other activity callback methods to monitor the activity object lifecycle.
Table of Contents
Installing JDK 1.8 on Windows System
Installation of Android SDK R24 and Emulator
Installing Apache Ant 1.9 on Windows System
Developing First Android Application - HelloAndroid
Android Application Package (APK) Files
Android Debug Bridge (adb) Tool
AboutAndroid - Application to Retrieve System Information
►android.app.Activity Class and Activity Lifecycle
Introduction of Activity Lifecycle
onCreate() and Other Callback Methods
ActivityLog - Application to Create Log File
►Viewing Activity Log File with "cat" Command in "adb shell"
Implementing Activity Callback Methods
ActivityLog Test - Activity Terminated by User
ActivityLog Test - Activity Stopped and Restarted
ActivityLog Test - Activity Paused and Resumed
View Objects and Layout Resource Files
Using "adb logcat" Command for Debugging
Build Process and Package File Content
Samsung Galaxy Tab 3 Mini Tablet
USB Debugging Applications on Samsung Tablet
USB Debugging Applications on LG-V905R Tablet