My question is simple. In Android app, when we write
Log.d("TAG","log message");
and run this app on device, where does this log goes? We can see this log in logcat in Eclipse.
The log is saved on the device, sommewhere. You can access it with 'adb logcat' commands in adb.
Note that, when publishing the app, you should not log debug messages. Errors only.
using DDMS, as described here
Related
It's a weird situation. I have a react native app that has a test and production environment. On the production side, my app is correctly integrated with crashlytics. But when I try to integrate on test apk, I see only "App detected and we're waiting for a crash!"
SS
Test and prod use the same application, the only difference is google-service.json files. I've not found anything. Please help.
Some notes:
I've tried on emulator and physical devices.
When I try to see dashboard for prod build, I can see correctly.
I don't think that it is related by package versions(Because it works on prod). So I didn't put those.
I 've seen " Crashlytics automatic data collection DISABLED by API" with adb logcat -s FirebaseCrashlytics command
When running the app, if you see the "App detected and we're waiting for a crash!" message, that means that the SDK was able to connect with the back end. But something could be preventing the SDK from sending crashes.
The first thing to do would be checking if the mapping file contains the parameter firebase_crashlytics_collection_enabled and if it is set to false. Check this document.
If so, you can override this parameter opting in with the code:
Firebase.crashlytics.setCrashlyticsCollectionEnabled(true)
Currently logback captures all the logs to a file that are mentioned via error, debug etc.
Apart from this logs, in Android Studio logcat we could we other logs that are provided by other apps or by the Android System.
Is there a mechanism to include all the logs that are available in adb logcat to the logs created using logback?
Unfortunately, no :
For security reason, an application can only see its own logcat, since Android 4.1 (API 16) there is no way for it to access logs from other applications or from the system.
While it is possible to add logback events to the logcat with a suitable appender, the other way around is not easy. There is no API to access the logcat events. The only solution would be for the application to launch the adb logcat command (without the usual -d flag), continuously read its output and create logback events.
I'm running a build from the Android Things Console built with several custom apks
One of the apps is failing with "{AppName}" has stopped. Open app again" The cause appears isolated to only one Configuration.
I'm trying to get to root cause, normally I would run "adb logcat" to view full details with android. Is adb logcat support with Android Things build? Is a mechanism such as logcat available in Android Things when built with a build from the Android Things Console? If not, is there an alternative?
ADB is available on development images of Android Things, not on production builds. You can change which one in the console. You can also add crash reporting tools like Crashlytics which will provide crash reports for you.
I'm working in Android Studio 2.2 RC on OSX 10.11 , and after implementing In-App Billing, after having generated my app-release.apk and having installed it on my phone, I noticed that when the purchase is successful and Ads are removed from my App, something in a secondary Activity of mine, is causing a NullPointerException and Activity is not loading.
To figure out what is causing it, I need to somehow debug the app while the In-App Purchase is active (debug.apk won't let me complete iAP) so...
How do I debug a release apk that is installed on my phone?
Use the following steps:
Enable debug in your device and connect usb to your device use
command adb devices to list connected devices
use command adb -s "device id" logcat and hit enter
It will show you a lot of log message but don't worry. Just test your phone and it will show you the error. Use ctrl + z to stop the log and you can check your error.
Please read this link. It will help more. Hope this will help you.
I built an android application and signed the apk following all the steps on this tutorial. Even though the APK builds successfully after installing it on a mobile device it fails to load. I only get a white blank screen. I've searched for solutions and tried most of the suggestions but with no luck.
I then decided to start the project from scratch and guess what? the problem still persists. What could I have possible done wrong? I don't really know where to look because I don't even get an error message.
Please help???
I would try debugging that with a tool like GapDebug (https://www.genuitec.com/products/gapdebug/). I would:
Download and install GapDebug.
Attach your device to your PC/Mac via a USB cable.
Deploy your APK to the device and run it.
In GapDebug, choose your app as the app you want to debug.
At this point you may already see one or more errors showing up in the GapDebug console. If not,
On the device, restart the app.
Check the GapDebug console for errors.