Filter application in adb logcat terminal - android

For debugging android applications I want to run logcat in a terminal (adb logcat). I've been using short tags for logging ([Class].class.getSimpleName()) to distinguish between the entries them more easily. However, adb logcat only lets me filter by tag, not by application (like the ADT plugin in Eclipse allows).
The only solution I could come up with is to pipe the logcat through grep [PID] but that isn't much help, since the app gets a new PID whenever I run it.
Can anyone offer an idea what might work?

you can try pidcat to filter by application , and it's colored output, then just run
pidcat yourpackagename

Just create a new filter in logcat, and in application name, put you app name (Package name from manifest), this will create a new filter for you which will only list message thrown by your app in logcat.

Related

Android Studio 3.0 Logcat continuously showing messages and does not stop

When I start debugging my App in Android Studio 3.0 and open the Logcat, it displays so many messages and warnings, but the problem is, it never stops, even when the debugging is completed and the App is terminated, it still prints so many messages continuously.
Can anybody help???
Since you are not debugging or running any application on the device you have connected. Hence, the logcat is displaying the logs generated by all the apps in the device as well as the system logs. Which makes the log cat window go nuts.
What you can do is.
On the top right corner of the log cat window, there is a filter config combo box. Select or create a filter of your own to filter out relevant logs.
The filter could be created using any details, it could be a process ID (PID), the tag name e.g I/ActivityManager: where I stands for Info, V for Verbose, D for Debug and so on.
You can add filter in your Logcat, and mention all the classes whose logs you want to discard.
In the field LogTag (shown in the pic) define a regex like this ^(?!Class A | Class B|#). Here Class A and Class B are the classes whose logs you don't want to see.That's it.
If you see no debuggable application then change it to your app name. If that wont help change the log level to error. Last thing you can try is to filter the results. Good luck!

Adb read contents of an Alert Dialog

i have an android phone connected to my pc, using ADB i can run some commands to the device and get output, now am in a situation where i want ADB to read the contents of an Alert dialog. i have been Googling all day but couldn't find anyone on the internet talking about it.
I need an adb command that can read the message content in that dialog for example
UPDATE: I know some people might tell me to add code for logs in my app, however am talking about the system dialogs, not dialogs from my app, of course i can add log tags in my app that way i can get them but what i want here is the dialogs from the android-system.
If you're running your own app or in a position to change the source of the one you're running, you could find where the message gets drawn and log it using Log.i("YourTag", "TheMessage"). The .i stands for info and there's other log classes you can use (d, e, w, v).
You can then read logs with adb logcat, and filter them if you want by running adb logcat YourTag:* *:S. This tells logcat to show all messages tagged YourTag (* instead of, for example, .i to show info messages only), and silence everything else.

Filtering LogCat in ACRA by application and not using TAG

I am currently using ACRA for capturing errors and improving my application. I would like to filter in Logcat all logs generated due to my application running which includes not only those that my app generates, but also those that are generated by libraries used by app (like GooglePlay).
Usually what I have seen suggested is filtering by TAG, but that will not allow me to see logs that I have not tagged (like, for instance, ACRA... )
There is a solution in eclipse where I can filter both using TAGs but also by Application name and/or its process ID. That's what I would like to do, filter by my application name the logcat output sent to ACRA.
I would like to use a command in logcat to reproduce the following option I select in eclipse:
Finally the question is at logcat level. Is possible to filter logcat at adb level using a filter by application and not by TAG
Is the only option to have a single TAG for all the application Logs? Another way around I have is to filter "all TAG starting by xxxx", but I have not found any example in google, not using "*".
Any solution using Linux shell (like grep) is not workable, I already tested it as the way the information is passed by ACRA.
Trebia,
The tricky part of your request is "adb logcat" spits out PID. The only way I know of to filter by application name is to write a script to query the OS via "ps" to look up the PID. I am not aware of any way to do that within eclipse with out editing the logcat plugin yourself.
If you are using a Mac and you are willing to do the filter outside of eclipse you should try LogRabbit. It can filter by application name or just about any thing else you would need to filter by. In addition to a rich filter creator your saved filters are just one click away for real-time filtering.
You can find more information here: http://lograbbit.com/
Full disclosure I am the creator of LogRabbit.

DDMS Not showing my logs

I'm having an issue with DDMS.
System logs are appearing fine, but my own logs aren't showing up.
I'm trying to view the logs in ddms.exe.
I've tried restarting adb, stop/start adb, restart ddms, restart emulator, recreate avd.
Nothing has had an effect. I've tested this with two different apps.
Any ideas?
EDIT same issue in logcat.
No filters selected
I've restarted the computer
As i remember you have to make you app debuggable ("android:debuggable=true") in your manifest file. Or you can find your app in DDMS but can't get access for your own logs?
can you try the command:
> adb logcat -s "TAG"
on a terminal/cmd line ?
here "TAG" is the name of the tag which you are giving in your Log
I failed to mention that i'm using a tool called Kony. It is a "write once deploy everywhere" mobile development environment.
When the app is being compiled in release mode (which I was unaware of) all print statements are removed.
Had this not been the case, some or all of the previous suggestions would have worked, i'm sure.
Adding to above.
It is true that the value we are trying to print will not be logged to the console but it is not strictly removal of print statements. Kony.print get executed .
This observation can be checked by building in release mode and trying to print and undefined value, you will get type error thrown.

Android Dev: Logcat in Eclipse - can't restrict output to V/D/I/E?

I'm using Logcat in Eclipse. I've been unable to find documentation online telling me as such, but presume that the V, D, I, E etc. buttons when clicked should restrict Logcat output to that pipeline? No matter which I select, every logcat output is spewed out, and it's making debugging nigh on impossible.
Can someone please tell me how to display only Debug output, i.e. Log.d(..) prints? I don't think this is possible using a filter, since I've tried creating one with log level 'Debug' and an empty tag and pid field, yet this simply prints all log outputs again.
Many thanks!
UPDATE
So, thanks to Aleadam's link below, I'm now aware that V/D/E/ etc. are 'priority levels' and include those priorities lower than themselves. It doesn't seem possible to restrict to only D(ebug) output, but at least I know how to restrict to D,V since V(erbose) is the only priority level lower than Debug:
adb logcat *:W
Of course, this must be done via the command line, so I'm now going to figure out how to employ the same strategy in Eclipse. The buttons really aren't working for me, I've no idea why, but it's frustrating!
Many thanks for all the information you've posted, guys.
Those buttons should work in the manner you're describing so long as they were logged with the appropriate API call in the Log class. http://developer.android.com/reference/android/util/Log.html
Regexes/wildcards do not work. There's a bug I requested from almost a year ago. http://code.google.com/p/android/issues/detail?id=11580&can=4&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars
adb logcat *:D will not show only debug, but everything with debug priority or higher.
For example, adb logcat *:E > err.log will save errors only.
For many options, check "Filtering Log Output" in here: http://developer.android.com/guide/developing/tools/adb.html#logcat
If you're running under linux use grep. If you're on windows, use the shell: (e.g. adb shell "logcat |grep 'D\/'")
Filtering works on my system but I specify a Log Tag. This then creates a new button next to Log. So for Log Tag "QPR" I see [Log][QPR] buttons and when I press on [QPR] I only see logging that has been tagged as "QPR" as in Log.d(TAG,"onCreate",e);
At least on my system if I click on [Log] (E) I only get errors.
Hope that helps,
JAL

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