Before I did any changes, I printed Log.isLoggable(MYAPP_TAG) for all levels.
I/System.out﹕ MYAPP Loggable Level: [V:false][D:false][I:true][W:true][E:true]
And then I did adb shell setprop log.tag.MYAPP_TAG WARN.
The Log.isLoggable(MYAPP_TAG) message now became
I/System.out﹕ MYAPP Loggable Level: [V:false][D:false][I:false][W:true][E:true]
However, all log messages (Log.v, Log.d, etc) can still be observed in Logcat.
02-03 13:18:28.050 3284-3284/com.XX V/MYAPP_TAG﹕ onServiceConnected
02-03 13:18:28.050 3284-3284/com.XX D/MYAPP_TAG﹕ onServiceConnected
Why is that?
I think you need to wrap your logs:
if (Log.isLoggable("MY_TAG", Log.VERBOSE)) {
Log.v("MY_TAG", "Here's a log message");
}
otherwise android seems to ignore your settings; it seems like the Log.v, Log.d, etc. are not checking against the LogLevel.
Related
I used the tracing mechanism for C++ described here by google. I'm checking for ATrace_isEnabled and while I'm getting true for ATrace_isEnabled, I'm unable to see any logs in the logcat.
I also went through with this answer, but to get enabled, I have to run systrace.py --app="my binary name". The setting of flags do not help
Is there something I'm missing?
I'm on Android 6.0.1
The setting of flags do not help, because in there source code, logic is such that it gets changed to 0 again. You need to specify appname wise like
adb shell "setprop debug.atrace.app_number 1"
adb shell "setprop debug.atrace.app_0 appname"
and for getting logs in logcat, use this __android_log_print(ANDROID_LOG_INFO, LOG_TAG, "ATrace_isEnabled = %s", ATrace_isEnabled1()?"true":"false");. Define LOG_TAG for this.
for more help, see this ATrace_isEnabled() return false
I'm trying to use Anko Commons – Logging
but for some reason the verbose and debug not showing on the logcat
however, when I use Log.d it works as expected.
when I'm trying this code
verbose("-------------verbose--------------")
debug("-------------debug--------------")
info("-------------info--------------")
warn("-------------warn--------------")
error("-------------error--------------")
wtf("-------------wtf--------------")
the log logcat is as following
I'm using Anko 0.10.0 android studio 3.0 canary-5
when I tried to search for a solution I found this one
All Log.* will log to logcat regardless of what the current log level is. However, AnkoLogger.* will only log to logcat when its log level is loggable.
but I don't know how to change the log level, and if even it's my problem is the same.
It turns out The default log level is INFO.
From the ADB shell, you can change the log level to DEBUG, VERBOSE etc. using this command:
setprop log.tag.MyApp DEBUG
so As far as know by AnkoLogger uses Log.isLoggable() under the hood which ignores VERBOSE and DEBUG log levels by default.
for more info you can read more about it here
I am using java logger for java projects.But now I want logs in Android.So how to carry out it.Alos I need to maiantain logs for warnings ,errors,informations in a file with serial logs.
Use android.util.Log and use methods like:
Log.v(), Log.d(), Log.i(), Log.w() and Log.e()
There are five levels of logs you can use in your application, for the most verbose to the least verbose :
Verbose:For extra information messages that are only compiled in a debug application, but never included in a release application.
Debug: For debug log messages that are always compiled, but stripped at runtime in a release application.
Info: For an information in the logs that will be written in debug and release.
Warning: For a warning in the logs that will be written in debug and release.
Error: For an error in the logs that will be written in debug and release.
A log message includes a tag identifying a group of messages and the message. By default the log level of all tags is Info, which means than messages that are of level Debug and Verbose should never shown unless the setprop command is used to change the log level. So, to write a verbose message to the log, you should call the isLoggable method to check if the message can be logged, and call the logging method :
if (!Log.isLoggable(logMessageTag, Log.Verbose))
Log.v("MyApplicationTag", logMessage);
And to show the Debug and Verbose log message for a specific tag, run the setprop command while your device is plugged in. If you reboot the device you will have to run the command again.
adb shell setprop log.tag.MyApplicationTag VERBOSE
Hope this solved your question.
For more reference :http://www.codelearn.org/android-tutorial/android-log
Upvote if you found it helpful.
I am debugging on device, and I do not get the verbose or debug log messages, only the info, warn, error and wtf. I need to get all debug and verbose messages, without enabling with setprop for all my tags (I am using different tags for each file). So how can I set device log level to VERBOSE globally? It is also good if you show me a java code from I can set log level for a tag - so my wrapper class will set log level for every new tag to verbose. But command line not good...
I can't seem to get assertions working in my eclipse android project. I have followed the directions at this site
But I still can't get them to work. My code looks like:
assert(false) : "PROGRAM ERROR - invalid dialog call";
any ideas?
Dalvik VM ignores Java assertions by default. To enable that, one must change debug.assert property, e.g by invoking command in command line:
adb shell setprop debug.assert 1
Please note that you have to restart VM after that (force stop application: Settings->Apps->click on the app->Force stop).
Please also note that the setting is not persistent (assertions will be disabled again after phone reboot). However on rooted phones there's a way to make it persistent by putting /data/local.prop file containing line
debug.assert=1
What language are you expecting to use with the above?
I would try:
assertTrue("Expected true", true);
assertFalse("Expected false", true);
assertEquals("Expected equal", "same", "same");
Junit:
junit-docs/junit/framework/Assert.html