How To Read Log Files On Android


How Can I View Bluetooth Logs For Android

How to pull a Logcat file from your android device

Retrieving the HCI Log

  • On the Android device go to Settings.
  • Select Developer options.
  • Click to enable Bluetooth HCI snoop logging.
  • Return to the Settings screen and select Developer options.
  • In the Developer options screen select Enable Bluetooth HCI snoop log. The log file is now enabled.
  • . In this manner, how do I check Bluetooth history?

    If you go in “Devices and printers” and select a paired device, you may be able to find the last connection time there. Go in the hardware tab, click “Properties”, then “Details” and choose the property called “Bluetooth last connected time”.

    Secondly, what is Bluetooth trace log? DBus is the IPC communication layer between the Ubuntu System Settings and the Bluetooth stack. DBus saves its debug information to this log file which can be useful to tell if both of the parties are able to communicate. HCI trace.

    Similarly, what is the use of Bluetooth HCI snoop log?

    Enable Bluetooth HCI Snoop LogThis option will give them useful information without the need of a sniffing device. The log will be placed in the device storage which can be retrieved to analyze it with software like Wireshark.

    What is Btsnoop log in Android?

    It’s a log file comprised of all bluetooth transmissions done on your android device. If you have it it means you have an app which logs/enables logging of bluetooth transmissions, you enabled bluetooth transmission logging or your android device automatically logs bluetooth usage.

    Save Console Output To A File

    If you use console output for logging, you can save it to a file for later inspection.

  • In the run/debug configuration that will be used for launching the app, click the Logs tab. The Edit Log Files Aliases table displays the list of log files.

  • Select Save console output to file Specify the path to the file. If the file does not exist, it will be created automatically upon the first write.

  • Prerequisites For Troubleshooting Secured Android Apps Using Adb

    In order to use ADB, youll need:

    • Android SDK. Make sure that platform-tools have included ADB in this package.
    • USB Driver for the mobile device
    • Android app that has enabled diagnostic logs

    To facilitate the usage of ADB, you need to allow USB debugging on your device:

  • Enable Developer Options on the Android Device.
  • Navigate to Settings> About Phone> scroll to the bottom > tap Build number seven times.
  • Youll get a short pop-up in the lower area of your display saying that youre now a developer.
  • Navigate to Settings > Advanced > Developer options.
  • Check USB debugging and click OK on the prompt.
  • When the device is connected to the computer, you should be prompted to Allow USB debugging. If so, check the box to Always allow from this computer.
  • Click OK. If you do not see the message appear on your mobile device, disconnect and reconnect the USB cable.
  • Also Check: Remote Access Software For Android

    Android Log Example Source Code

    3.1 Main Layout Xml File.

  • activity_log.xml
  • 3.2 Activity Java File.

    package com.dev2qa.example import android.os.Bundle import import android.util.Log import android.view.View import android.widget.Button public class LogActivity extends AppCompatActivity         })     }}
  • 3.3 Log Tag Name Tip.

  • The first parameter for the log method is a tag name, we can use this tag name to filter out the useful log data easily.
  • Commonly the tag is the class name. You can simply create the tag name follow the below method in the activity java file.
  • Write the log data in the activity java file outside of the onCreate method.
  • Click the Tab key, then the android studio will generate the tag name automatically. You can see this step demo video on URL .
  • Besides the class name, you can create the tag name by the class function also. You had better create a class that includes all static String Constant that used as tag name as below.
    package com.dev2qa.example.constant public class LogTagName Log.w 
  • This way can make the log more readable, even none programmer can understand the meaning of the log.
  • Access Android Files On Windows Pc

    how to read file from assets folder in android Code Example

    To access Android files and folders on Windows PC over WiFi, we are going to use the popular file manager ES File Explorer.

    To start off, install ES File Explorer if you havent already. Launch it, swipe from the left side of the screen and then select the option Remote Manager from the main menu.

    Once the Remote Manager window has been opened, we need to configure it. Just tap on the Settings icon to continue.

    The above action will open the Remote Manager settings window. As you can see from the below image, ES Explorer already set the default port and the current user to Anonymous.

    I would recommend you add a username and password so that other users on LAN cannot access it without authorization. To do that, tap on the option Set Manage Account, enter the username and password and touch the OK button to continue.

    If you want to you can also change the Current Port so that it is easy to remember when adding it to other systems. Make sure that the port number is between 1025 65534.

    Also, if you want to change the root directory, tap on the option Set root directory and select your default root directory. In my case, Im selecting my external SD card as my root directory. If you want to access both internal and external storage, then select /.

    Once you are done, this is what it looks like in the Remote Manager settings screen.

    On Windows open the File Explorer and select the option Map Network Drive from the Computer tab.

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    How To Get Log File Location In Android Device

    I need android log file in a file format. But i don’t Know where is the location of log file. i go through techniques like “adb logcat”. but i need the file format of error log. please help me to get the Android Log File. Iam new to this environment please help me.

    • is there any way to get the log into a file format?Jun 5 ’17 at 13:38
    • 1Jun 5 ’17 at 13:40
    • so, as default the device is not storing any logging information in a file format. right?Jun 5 ’17 at 13:43
    • 1Again, AFAIK, the logs are kept only in memory. That is why for a long time they were limited to 64KB, though now in Developer options in Settings you can increase the amount of RAM devoted to the logs.

    Xda Basics: How To Take Logs On Android

    Logs are very useful when a developer is diagnosing an error with a piece of software. So, as a user, when you complain to a developer about a problem with their Android app or an aftermarket firmware , theyll ask you to submit a log to help them troubleshoot the issue. Android includes a number of logs that deal with different parts of the firmware, and there are a number of ways to collect those logs. In this guide, well talk about the various common logs and how you can collect them on Android for bug reports.

    Before we start, you should set up Android Debug Bridge on your computer as you might need ADB access for some of these logs. We have a great guide on how to set up ADB on any computer.

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    How To View And Examine Android Logs

    Yoodley is reader-supported. When you buy through links on our site, we may earn an affiliate commission.

    If you are looking to learn how to obtain and examine android logs, this is just the post for you. Log analysis is important to recognize bugs and obstructions in an application-in-making which is provided by a set of logs. Lets start with the basics first, however.

    Get Sophos Intercept X For Mobile Logs

    Read Call Log Content Provider – Android Kotlin

    To get the log files of the Sophos Intercept X for Mobile Android app, do as follows:

  • Open Sophos Intercept X for Mobile.
  • Open the app menu and select Settings> Send log by email.
  • Select the email app.
  • Enter the email sender and recipient.

    The default sender is the users Google account.

  • Send the email.
  • Recommended Reading: Ios App To Android App Converter

    How To View Linux Logs

    1. First, open the Linux terminal as a root user. This will enable root privileges.

    2. Use the following command to see the log files:

    cd /var/log

    3. To view the logs, type the following command:


    The command displays all Linux log files, such as kern.log and boot.log. These files contain the necessary information for the proper function of the operating system.

    Log files are accessed using root privileges. By definition, root is the default account that has access to all Linux files.

    Use the following example line command to access the respective file:

    sudo less .log

    This command displays a timeline of all information related to that operation.

    Note that log files are stored in plain text so they can be viewed by using the following standard commands:

    zcat Displays all the contents of logfile.gz

    zmore See the file in pages, without decompressing the files

    zgrep Search inside a compressed file

    grep Find all occurrences of a search term in a file or filter a log file

    tail Output the last few lines of files

    head View the very beginning of text files

    Note: Check out our comprehensive guide on grep to learn how to use it with examples.

    Controlling Log Output Format

    Log messages contain a number of metadata fields, in addition to the tag and priority. You can modify the output format for messages so that they display a specific metadata field. To do so, you use the -v option and specify one of the supported output formats listed below.

    • brief Display priority/tag and PID of the process issuing the message .
    • process Display PID only.
    • tag Display the priority/tag only.
    • raw Display the raw log message, with no other metadata fields.
    • time Display the date, invocation time, priority/tag, and PID of the process issuing the message.
    • threadtime Display the date, invocation time, priority, tag, and the PID and TID of the thread issuing the message.
    • long Display all metadata fields and separate messages with blank lines.

    When starting LogCat, you can specify the output format you want by using the-v option:


    Here’s an example that shows how to generate messages in thread output format:

    adb logcat -v thread

    Note that you can only specify one output format with the -v option.

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    Android System Log File Location

    In Ubuntu, there is a /var/log/syslog file. What is the equavalent file of the ubuntus syslog in android? I have a rooted Android phone.

    There are a few ways to view the System-Log – but finding the location of the log files is considerabaly harder. I will list 3 options that will allow you to view the logs , but I do not know where they are kept. I may be wrong, but from what I have gather, the Android System does not keep a “Log File”. Rather, there is a buffer that contains the “Log” !You first option is to install an app from the play-store called aLogCat. This app is very useful for both viewing and sending logs from your device. It can be setup to Email you the “Log Files” from your device. This method works best with root.

    The second method works by using the Android SDK. Connect your device and, at a Terminal enter the following:

        $ adb logcat -d >  logcat.txt

    The -d option tells adb to copy the entire File Log from the Android System. Because you seem to know how UNIX Systems work, I won’t explain the rest of the command.

    A third option is to install a Terminal Emulator on your Android device. Open the Terminal Emulator and enter the command:

        $ logcat -d >  /sdcard/my-log-file.txt

    This will do the same as above permission!

    I have a Motorola Droid 4GLTE, which is run by android. I usually access the system log, and event log by this sequence: 1) open any page online, notice the three dots in upper right corner of screen. Cluck on those dots.

    Access Android Device On Windows 10 With Adb Tools


    You will need to interact with both your Windows 10 system and Android device in this step.

  • Open Command Prompt with admin rights.
  • Use the cd command to move to the Platform-tools folder.
  • cd path-to-Platform-tools-folder
    cd C:\Users\fatiw\Desktop\platform-tools_r30.0.4-windows\platform-tools
  • Connect your Android device to your Windows 10 PC with the data cable.
  • Unlock the device and make sure the screen is awake.
  • On Windows 10, run the following command in the Command Prompt window that is already open.
  • adb.exe kill-server

    If you see the cannot connect to daemon at tcp:5037: cannot connect to No connection could be made because the target machine actively refused it. error, dont worry and proceed to the next step.

  • Run the following command in the Command Prompt window.
  • adb.exe devices
  • Look at your Android device. You will see a prompt asking for permission to Allow USB debugging. Tap Allow.
  • Run this command, and the device ID should be accompanied by device.Note the device ID down.
  • adb.exe devices

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    Ensure Your Device Is Authorised And Connected

    Plug your device into you computer with a USB cable. Run adb devices to see a list of devices adb recognises. I had to unlock the phone and tap around in the USB Options section of the notification you get when the phone is plugged in to get a screen up asking me to authorise my computer before it would show as authorised:

    Once authorised, adb will show the device as attached:

    $ adb devicesList of devices attachedRF8M55WFB4W     device

    What Is Log File In Mobile

    Log files are special files created by the Skype® app containing important information that can help us identify the cause of problems you are experiencing in Skype®. These log files help us find the best solution to the problem. Watch this video to know how you can create and save a log file on your Android phone.

    Read Also: How To Archive Text Messages On Android Phone

    How Do I Find My Dmesg Log On Android

    Get logs via Terminal Emulator:

  • Normal Logcat: Code: logcat -v time -d > /sdcard/logcat.log.
  • Radio Logcat: Code: logcat -b radio -v time -d > /sdcard/logcat_radio.log.
  • Kernel Log: Code: su -c dmesg > /sdcard/dmesg.log.
  • Last_kmsg: Code: su -c cat /proc/last_kmsg> /sdcard/last_kmsg.log.
  • 11 . 2013 .

    Viewing Alternative Log Buffers

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    The Android logging system keeps multiple circular buffers for log messages, and not all of the log messages are sent to the default circular buffer. To see additional log messages, you can run the logcat command with the -b option, to request viewing of an alternate circular buffer. You can view any of these alternate buffers:

    • radio View the buffer that contains radio/telephony related messages.
    • events View the buffer containing events-related messages.
    • main View the main log buffer

    The usage of the -b option is:


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    Easy Steps To Troubleshoot Secured Android Apps Using Adb

    Appdomes Diagnostic Logs features are also useful when troubleshooting secured Android apps using ADB.

  • Check with Appdome support to see if your account can enable Diagnostic Logs on app builds.
  • While Fusing/Building an app you can enable Diagnostic Logs at the bottom of the page.
  • Under Troubleshooting, enable Diagnostic Logs for the Build.
  • You can enable the ability to email or upload logs to Appdome support with a tap in the app within Diagnostic Logs.
  • Install Minimal Adb And Fastboot Tool

    In order to install Minimal ADB and Fastboot tool on Windows, follow the steps given below.

  • Download the installation file of Minimal ADB and Fastboot tool from here.
  • Run the .exe file after the download completes.
  • Complete the steps and select your installation destination location if required otherwise left the default location.
  • Select the location for application shortcut file or leave the default location.
  • After all the installation setting completes, click on the install button to start the installation.
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    How To Enable Kodi Logging

    The first step to find a Kodi log file is to make sure at least a certain type of logging is enabled. You will find the logging options if you head to Settings -> System from the main menu, and then select the Logging option from Standard settings level or higher. To change the settings level, click it.

    Usually, event logging is enabled by default when you install Kodi this means, it should be enabled if you have never messed with these settings. Still, it’s good to check. You can also enable Kodi logging for specific components if you click Specify component-specific logging. A menu will appear, with several options to turn on verbose logging for specific components of your Kodi settings. Keep in mind that with every additional logging level you select, the log file will be bigger, which might have a negative impact on limited-hardware devices such as Raspberry Pi.

    Warning: depending on the level of logging enabled, some addon or services passwords might be exposed on your log. Make sure no sensitive information is exposed before sending it!

    Enable Usb Debugging And The Bluetooth Logs

    Notification History Log for Android

    Goto the newly enabled Developer options section of the Settings menu, toggle Enable Bluetooth HCI snoop log to enable the logs, and USB Debugging to allow us to extract the logs over USB later.

    Then toggle bluetooth on and off. The log is now enabled . At this point you should use whatever app you want to capture the bluetooth traffic from to generate some logs.

    Also Check: How To Check Wifi Data Usage On Android

    Where Can I Find The Kodi Log File

    After you have selected your desired level of logging to configure the information included in your Kodi log file, try to reproduce the error or issue, so the steps taken by Kodi up to until the point where the error happened are registered on your log file. If you want to know where is Kodi error log file, you can read our tutorial on Kodi folder structure. For your convenience, we also have the following table of locations where your Kodi log file could be, depending on your OS:

    Operating System

    When someone on an online forum asks for a log file, all you need to do is enable your desired level of logging in the options, and then paste the contents over so that the other users can help you. If you are experienced, you can also take a look at the Kodi log file yourself. For easier and more compact pasting, you can use services such as xbmclogs or pastebin, which will avoid cluttering your forum post and make it more manageable.

    That’s it! You’re ready to use all the potential that log files bring into solving your Kodi technical issues! There are addons that automate parts of this process, and we will bring them to you soon in future guides. For now, enjoy turning your Kodi device in a casual gaming center with these 10 Kodi gaming addons you didn’t know about, or sit back and relax with the movies and TV shows Kodi Exodus addon brings to your living room. There’s never a dull moment with your Kodi media center!

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