Huawei, logcat not showing the log for my app?

Question

OK, logcat is showing system logs but it is not showing application log on my Huawei Ascend. If I switch to another device such as my Galaxy Nexus or Nexus 7 then for the same app (same APK even) log is displayed.

The Huawei Ascend is running Android 4.1.1, it has USB debugging switched on in developer options. This occurs for logcat run from either the command line or from IntelliJ. And I'm making sure that the correct device is selected - in fact I'm only plugging a single device in at a time. I've tried restarting adb, clearing it's buffer etc

I can see that the app is starting on the Huawei, I even get system logs showing that the Activity has started. But unlike on the other devices I get no app log in the Activity#onCreate (or from anywhere else).

08-08 20:55:44.050: INFO/WindowManager(431): Switching to real app window: Window{41ae8780 au.com.xandar.wirelesstiming.timekeeper/au.com.xandar.wirelesstiming.timekeeper.TimeKeeperActivity paused=false}
08-08 20:55:44.180: INFO/ActivityManager(431): Displayed au.com.xandar.wirelesstiming.timekeeper/.TimeKeeperActivity: +387ms

How can the application log not be getting delivered?

Costmary

Maybe you've applied a certain filter in the LogCat output - go check it out. – Binkley

Possible duplicate of Why doesn't logcat show anything in my Android? – Demiurge

@CamilStaps because this problem is specific to Huawei phones. – Costmary

That doesn't really matter, the point is that it has been answered elsewhere already. – Demiurge

@CamilStaps This question has not been answered elsewhere. Hene the number of people that it has helped compared to the other. – Costmary

Yes, it has: your own answer points to https://mcmap.net/q/115810/-why-doesn-39-t-logcat-show-anything-in-my-android which answers your question. – Demiurge

@CamilStaps Read the 2 questions. This question has not been asked elsewhere. – Costmary

For meizu https://mcmap.net/q/121678/-logcat-won-39-t-display-log-d-messages – Khan

this solution did worked for me #42691576 – Indiscretion

Answer 1

OK, since I had another Huawei Ascend I ran into the same problem. This time I have the exact answer. Follow these instructions (from denispyr's answer on Why doesn't logcat show anything in my Android?)

Dial

*#*#2846579#*#*

and you will see a hidden menu. Go to the Project Menu > Background Setting > Log setting and define the log availability (log switch) and level (log level setting).

And then make sure you restart your phone.

Please note this probably only applies to Huawei phones.

Also note that if you're on a Huawei tablet (e.g. MediaPad M3), instead of dialing, you launch the Huawei Calculator in landscape and enter ()()2846579()().

Costmary

For Huawei BTV-W09 nothing appeared where "define the log availability (log switch) and level (log level setting)". Instead there are 3 checkBoxes, the first one with the name AP Log was the one that solved the problem in my case. – Phyfe

Answer 2

For Huawei with Android 8.0+

we must dial the code: *#*#2846579#*#*

and selecting the option AP Log will be enough to display the messages in the LogCat.

Charmion

Answer 3

If any one having Letv Phone (LeEco Le Max 2 or 1) above solution won't work. Try the below USSD. Fig.1 for reference.

Press Dialer *#*#76937#*#*

Select "Enable All Logs"

Shoebill

This does not work on the Huawei ECO phone. Any tips? Model #: LUA-L23 – Embraceor

@Embraceor have you tried #*#2846579#*#. As mentioned in above answer – Shoebill

Thanks. Working with LeECO x527 – Planetoid

Answer 4

Instead of using

Log.d(TAG, msg);

Try this.

Log.wtf(TAG, msg);

work for me.

Wray

Thanks this worked for me on the Huawei ECO phone! – Embraceor

Log.wtf() is designed to a totally unexpected state. It is akin to SEVERE. It is certainly not DEBUG – Costmary

Xd i think Log.e()/Log.w()/Log.i() work very nice too. – Khan

Answer 5

I have a HUAWEI Y3 II aka LUA-L21.

The accepted answer didn't work for me. It led to some MTKLogger settings screen, which is different than described in the answer, and didn't help at all.

My solution

1. Dial *#*#2846580#*#* (please note this code is different from the one in the accepted answer)
2. You just entered a settings screen called EngineerMode (again, different from accepted answer's ProjectMenu)
3. In the first Telephony tab, click the Log Control item
4. Activate both switches (set Mtklog control to catch all log and adb radio log to catch radio log by adb)
5. Back in the previous screen, swipe to the Log and Debugging tab
6. Open Debug Utils
7. Change Debug Level from User Mode to Engineer Mode
8. For good measure, restart your phone

Screens

Changing Log control

Changing Debug utils

Additional notes

Just to clarify my original problem; logcat was showing some of my app's log entries, just not my own messages - I saw entries belonging to my process com.example.myapp, but never anything I was printing out myself, in my code, using Log.d("TAG", "hello world");

There was plenty of stuff like this:

4260-4270/com.example.myapp I/art: Debugger is no longer active
4260-4412/com.example.myapp I/System.out: [CDS]rx timeout:1
4260-4412/com.example.myapp D/NativeCrypto: doing handshake ++
4260-4603/com.example.myapp D/OpenGLRenderer: Flushing caches (mode 0)
4260-4603/com.example.myapp D/Surface:  Surface::disconnect(this=0xb85285d8,api=1)
4260-4260/com.example.myapp D/ActivityThread: ACT-STOP_ACTIVITY_HIDE handled : 0 / android.os.BinderProxy@2333cbdf

...but never anything like this:

4260-4603/com.example.myapp D/MainActivity: hello from onCreate!

The above steps solved the issue for me.

Renitarenitent

For Huawei CRO-L22 and some other Huawei with MTK works code for engineer mode #*#14789632#*# – Malynda

Thanks! #*#14789632#*# works on Y5 Lite (CRO-L03) – Hypersensitize

Answer 6

Some newer versions of Huawei Phones (I am using a Y9s 2019) have some settings changed.

Process is now

Dial *#*#2846579#*#*

Background Settings -> AP LOG Settings -> Open.

If you still can't see the logs, restart both your phone and Android Studio/Eclipse

Relative

Answer 7

Open your Dialer app and enter the following code: *#*#2846579#*#*.

    1-Enter the Background Settings page.
    2-Click on “Log Settings”
    3-Check all 3 options to enable full logging.
    4-Ignore the "will affect performance" warning.
    5-Reboot the phone.

Daynadays

Answer 8

Try downloading a Logcat app(eg aLogCat) on your device itself and see if you are having the same problem. I know its not a complete solution, but this way you may be able to figure out whats going wrong by reading the application logs.

Sulphonamide

This does not work on 4.x.x and above for system logs, only for the concrete application logs with READ_LOGS permission set - code.google.com/p/alogcat/issues/detail?id=41. – Binkley

Answer 9

Try this:

In Eclipse editor:

Reset adb from windows-->devices and then try again ...

please check your project is highlighted with green color (simply select your projrct name)

Wolof

As I said above, I'm using logcat from either command line or IntelliJ. I don't use Eclipse. And second, as I also said above I have already tried resetting adb (multiple times). – Costmary