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?

Solution 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()().

Solution 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.

Solution 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"

Solution 4

I gave up.

Log.d(TAG, msg);

Try this.

Log.wtf(TAG, msg);

work for me.

Solution 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.

View more solutions

Comments

[g00dy]

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

[Admin]

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

[William]

@CamilStaps because this problem is specific to Huawei phones.

[Admin]

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

[William]

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

[Admin]

Yes, it has: your own answer points to stackoverflow.com/a/10963065/1544337 which answers your question.

[William]

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

[Fortran]

For meizu stackoverflow.com/a/42822508/4592448

[surhidamatya]

this solution did worked for me stackoverflow.com/questions/42691076/…

[William]

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).

[g00dy]

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.

[charlesfranciscodev]

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

[Nitesh Tiwari]

@charlesfranciscodev have you tried #*#2846579#*#. As mentioned in above answer

[charlesfranciscodev]

Thanks this worked for me on the Huawei ECO phone!

[William]

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

[Aleksey_M]

Thanks. Working with LeECO x527

[Fortran]

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

[Dmytro Turkov]

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

[Talu]

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