As the title of the question said. Steps I did:
click on Update heap
In Allocation Tracker tab, click "Start Tracking"
Click "Get Allocations"
In the console, I saw red messages saying:
[2013-12-29 13:56:40 - ddm-heap] *** Received REAL`
What happened? am I missing anything?
Thanks
It needs to be done in Android Studio. (Thanks to the Project Member who said this on this bug report: https://code.google.com/p/android/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Status%20Priority%20Owner%20Summary%20Stars%20Reporter%20Opened&groupby=&sort=&id=74059)
You can see that the icons even have the same name as the icons in DDMS (which is confusing)! But the Allocation Tracker in DDMS does not work, and the one in Android Studio "Android Monitor" does.
P.S. In the screenshots I was using Android Studio 2.3 and Android Device Monitor version 25.2.2.
Wrong (Does not work):
Right (works):
The results will show up in a window next to your source code like this:
For more info:
https://developer.android.com/studio/profile/am-memory.html https://developer.android.com/studio/profile/am-allocation.html
Well, REAL is a REcent ALlocation.
Based on the source code, logging an error is the very first line of handleREAL(). Just an assumption - this should be Log.d() instead of Log.e(), but I cannot say for sure.
And yes, "Get Allocations" for me works not every time I click it. The resulting log cannot be exported, and disappears as soon as the app on device finishes. Sadly, not a very convenient tracing tool...
Related
When I run my android app, the logcat window fills up and then clears. I have System.out.println()'s that aren't showing up, nothing is showing up and I have no idea why.
EDIT: Using Android Studio
I have had a lot of issues with logcat in Android Studio, so here's a few items:
In your run configuration (just to the left of the play button, select "Edit Configuration" from the drop-down, you can configure a couple of options related to logcat, including whether or not Android Studio will clear it on startup
If the debugger disconnects you will lose your connection to the logcat. (some kinds of errors seem to force disconnect the debugger. I'm not entirely sure why.)
If you never clear your logcat, then Android Studio will attempt to display the entire logcat since the last time you restarted the device/emulator. This can take a long time, and may display a blank screen while it's processing.
By default, Android Studio will try to filter out messages unrelated to your app. In my experience, this never works right. I think it's easier to search for the tag that you're looking for.
I haven't specifically tried System.out.println() in Android Studio, but the typical Android way to print debug messages is with Log.d. Log
is located in android.util.Log. Android Studio will import it automatically if you type Log and press alt+enter.
My guess would be that your problem isn't that it's clearing logcat, but that it's not clearing logcat and Android Studio is choking on too large of a log file. Either select auto-clearing from the run configuration window or try walking away for a few minutes and see if the logcat ever comes back
I have an issue with my phone at the moment so am using an emulator within android studio.
I have launched android device monitor from android studio.
I understand android device monitor is meant to have a logcat tab, as in the tabs should be "threads, heap, logcat, allocations, network, file explorer..."
In instructions i've seen it here
for me, the logcat tab seems to be missing.
Why is it missing and how can I make it show?
I can do adb debug from the command line and get a long listing. And I have launched my emulator already from android studio.
Here is a screenshot from my computer - note the tabs Threads, Heap, but no logcat.
In The above image posted in your question, in the second screenshot you give, the large screenshot from your computer, there is a Logcat window at bottom left. Circled below.
(As opposed to the top row where it was in the instructions you mentioned)
The allocation tracker in DDMS in eclipse is no longer working. It worked last night, but my phone got a android update this morning. It no longer will work. When I click the Get Allocations button the console displays as follows:
[2014-07-21 17:42:31 - ddm-heap] *** Received REAL
in red text. Any one else have this problem?
I found out that my code was breaking ddms. Go figure.
This is the most frustrating thing ever, LogCat keeps deactivating/disconnecting. After running eclipse, LogCat logs for first run and after that, it goes Blank. I have to restart Eclipse to get it running again, and then same thing happens again. What is matter with it? It used to work fine. I can't recall changes I've made to undo what I (might) have done.
EDIT - Screen of Eclipse as requested.
EDIT 2 - Screen of currently installed SDK packages
If the LogCat is empty, the emulator doesn't have the focus. Go to the DDMS perspective and try clicking on the 'emulator' entry in the Devices panel (top-left screen).
Same thing with a device. You just have to click on the entry representing that device and the log messages comes.
I believe this other post with the same problem will answer this:
https://stackoverflow.com/a/11967853/241014
Essentially, set the log's buffer to a higher value by going in Eclipse to Window > Preferences > Android > LogCat. Set the "Maximum number of logcat messages to buffer" to something higher than the default of 5,000.
Most of the time Rahuls method would work, but sometimes even that doesn't work in that case, Kill the ADB and restart the eclipse.
For Eclipse only when LogCat isn't working:
1 - Open Perspective "DDMS".
2 - On the left side, click on the device you want to monitor.
3 - Change Perspective back to "JAVA".
In case if you are using cynogenmod in your mobile, try this:
In your device, open "/system/etc/init.d/" folder
If there are many files, try opening each file and find for this line:
rm /dev/log/main
Now, comment this line like this: # rm /dev/log/main
save the file and reboot.
If you close LogCat and re-open it it will display the information.
Although this question has been asked long before, I am answering for others who might stumble upon this trouble.
In Mars, eclipse 4.5 and linux using GTK 3, if Android Logcat display is missing, add the following in eclipse.ini before "--launcher.appendVmargs".
--launcher.GTK_version
2
May also refer these posts.
Logcat show invisible messages in Eclipse Mars
Eclipse GUI broken
The log tab is visible in DDMS and I have been logging data using Log.v(...) for many a week now without any problems.
Today, the log data is now longer being displayed in the Log window. Worked, then did a programming change to track a bug and now the log data is no longer showing.
Have tried running the app on an external Android phone, on the Android Simulator and it makes no difference.
Have closed down Eclipse, reloaded and still no change.
The console displays activity but only to the point of starting the activity.
The external phone is set up for debugging - not that this could be a problem since I have the same problem with the simulator
It looks like I have inadvertantly set something incorrectly but can't remember changing anything :-(
Anyone come across this problem before - have looked at previous posts but none seem relevant.
Regards,
Oliver
I had the same problem a while back. I was using the emulator and device for debugging. Apparently you have to select the device listed in the DDMS view whose logs you want to see. My logs were blank because the device that I was expecting logs from was not the one selected.
Hope that helps
Tried this:
https://stackoverflow.com/a/9826502/1238317
Check in your logcat window - TOP RIGHT corner PAUSE button || (Pause
receiving new logcat messages)
Few clicks + eventually restart eclipse (usually works in my case)
Check your LogCat window to see if you are filtering and make sure to set the debug level to Verbose.
There are possible reasons and solutions:
LogCat might have to much in cache, clear the log and see if it fixed the issue
You might need to select the device in the device view (even if it is already selected, try to click on it)
adb is not correctly working anymore, try to kill and start it again
Check if you see output if you use the command line adb logcat
Just go to DDMS perspective and click on the device's name in upper left corner and done your log cat will Start with a BOOm :P
In Android Studio, which I have found to be much more reliable and intuitive than Eclipse, I found this to be a common issue. For me what solves it (device is automatically set when running your app) besides checking code, is to Quit and restart the emulator or Quit Android Studio and Emulator and reopen/restart