Develop Reference

How do I hide this message in the Flutter console - ViewPostIme pointer 0

Everytime I tap the screen of my device, I see this message in the Flutter console
D/ViewRootImpl#38eee14[MainActivity]( 7994): ViewPostIme pointer 0
followed by
D/ViewRootImpl#38eee14[MainActivity]( 7994): ViewPostIme pointer 1
These messages crowd the console and get in the way of reading actual important logs, so is there a way to get rid of them?

I did it with
flutter run | grep -v "D/ViewRootImpl"

In VS Code, you can apply this search filter in the Debug Console:
!ViewPostIme
You can add more filters seperated by a comma:
!ViewPostIme,!ViewRootImpl
The '!' before a phrase excludes logs where the phrase occurs.
Example:

You can always use:
flutter logs
instead.
Alternatively, if your using IntelliJ/ Android Studio, see:
Flutter disable system debug messages in Run Tab

Late to the party, but for me the previous answers didn't work.
In Android Studio's Console, there is an option "Fold lines like this" to fold (hide) lines based on a pattern. Just right-click on any line in the Console...
That worked for me! That way I was also able to Debug my app from Android Studio by using Run 'main.dart' (I prefer that) instead of Command Line.
In your case, you could just add "D/" (or "D/ViewRootImpl") there.
Also it is possible to use:
V/ (Verbose)
D/ (Debug)
I/ (Information)
W/ (Warning)
E/ (Error)
A/ (Assert)
Still to see only Flutter logs, also add "I/flutter" and "E/flutter" to the exceptions.
See the video here: https://www.youtube.com/watch?v=b2miXG6HRNY

How to write Logs in File Android

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.

chromecast - android ccl log statements

Im new with gradle builds and dont understand why im not getting any of the LOGD statements included in logcat.
In the ccl, in gen/ccl/BuildConfig.java , i show:
public final static boolean DEBUG = true;
AFAIK that should be sufficient to include the ccl's logs in logcat but they are not there.
I used ./gradlew installDebugTests and installDebug to install the debug apk.
It shows log statements from the sender app but not from the ccl.
Earlier i built with ant and got all the ccl log statements just fine but cant figure out gradle.

That is caused by a bug in gradle that doesn't propagate that.. There is no trivial work around for that, and the gradle folks say it is non-trivial to fix it. What I personally do in my local repo is that I add "true ||" to the if-clause of the LOGD block to get that working in my local repo. Here is a reference to the bug: https://code.google.com/p/android/issues/detail?id=52962

Android Logging set verbose for all tags (logcat)

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...

How to enable assertions in Eclipse v3.7.2

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