yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] ElectroRick:
To measure the current that flows thru you unit you need a multimeter. The multimeter is connected in series in the +12V wire.

A multimeter doesn't have to be very expensive, however the cheap multimeters usualy are not very accurate for measuring current.

[IMG="Multimeter example"]https://dl.xda-developers.com/4/1/8/7/1/4/8/2017-06-09_20.34.33.jpg?key=TUsF42n_RlBZNjJiKE7SiQ&ts=1497889824[/IMG]
[Android Head-Units] Dutch3raser:
Have you guys used the AMP wire? I couldn't get it to work last time so I ended up putting it on ACC for my amplifier.

Joying told me I should then use that wire but I still think it's strange.

Shouldn't I be able to put AMP wire on or off with the setting? I cannot do this with the ACC wire.

Im using an Quadlock ISO to Joying harness (with canbus).

greetings,

D3
[Android Head-Units] naplesbill:
I use the amp wire. There is a setting in the joying settings app to turn this on or off.
[Android Head-Units] Dutch3raser:
Yeah I thought so too, but unfortunately It didn't work. :(

Have tried different harnesses. Thanks for letting me know it was working for you :) Do you have an canbus adapter too?
[Android Head-Units] naplesbill:
I do not have a canbus. My dash kit deals with the car features separately.
[Android Head-Units] edit:
The wire has a black fuse box on it... Is the fuse ok?
[Android Head-Units] outZider:
FWIW, my amp wire doesn't light up, either. I ended up bonding it with my ACC wire as well.
[Android Head-Units] DragFX:
Edit: I found the following in the "res/values/arrays.xml" file.

<string-array name="auto_blackscreen_time_entries">
<item>Never</item>
<item>3 minutes</item>
<item>5 minutes</item>
<item>10 minutes</item>
<item>30 minutes</item>
</string-array>
<string-array name="auto_blackscreen_time_values">
<item>0</item>
<item>180</item>
<item>300</item>
<item>600</item>
<item>1800</item>
</string-array>

I'm not a techie but I would really like to know how to do this.

I would like to know what program I need to find this info and how to re build the app to work.

Does anyone what to help?

I just made a complete interface from scratch so it should be that hard.
[Android Head-Units] dyabolikarl:
How can i check how much it's drawing on standby etc? :)
[Android Head-Units] alexyie:
Ok thanks for info.

So now i am only down to 1 navigation app (google maps) to use. I wanted to try patching the sofia server apk so I can use other navigation app but i worry that I gonna break my head unit >.<
[Android Head-Units] Dutch3raser:
Yes I have checked on both harnasses and the fuse was OK.

I recently changed to android 6 and tested this on 5, maybe this has changed something in the behavior. But I will verify this ASAP.

Do you have canbus adapter also? I was told the head unit notices the adapter and thereby AMP wire won't work?
[Android Head-Units] outZider:
No, hooked up old-fashioned style.

(Longer story: My unit was supposed to have one, they didn't include it, they wanted $30 + shipping to send it. I'm pretty done with Joying at this point, after two other ridiculous incidents with them.)
[Android Head-Units] Dutch3raser:
Then it seems it is not caused by the adapter. I need the adapter for ACC wire because originally my car does almost not run ACC wire anywhere.

I have a spare one [emoji14] but I think ur from America?
[Android Head-Units] surfer63:
Simply google for "measure car battery drain". There are excellent articles on the web and on Youtube.

Do something for it: search!

---------- Post added at 03:37 PM ---------- Previous post was at 03:32 PM ----------

Read this "Modifying the layout of the Joying Radio app" "HowTo" article I wrote. It doesn't serve the same goal you have, but the principles of decompiling, editing files, and recompiling are the same.
[Android Head-Units] naplesbill:
It just seems strange it works for me no problem. Which model joying do you guys have?
[Android Head-Units] Dutch3raser:
I'm running a JY-VL130N2.
[Android Head-Units] DragFX:
Just started playing around with modifying apk and Yea I don't know what I'm doing lol.

If it bothers anyone else that 3 min is to long and changes the Time to one min. Let me know.

Also if you do this make a video on the full thing (screen play) so I can properly see it done by a pro.
[Android Head-Units] surfer63:
You give up very soon. How long do you think it took me to create the first working apk?

Please find attached a zipped version which I created within 5 minutes.

It contains a 30 seconds, 1 minute and 2 minutes entry as well.

I did not test it and do not know if it works. Make sure you have a copy of the original Settings.apk at hand.
[Android Head-Units] DragFX:
Big Thanks, it not that I give up to easily it just afraid to Brick my system lol.

What do you do for work? I ask because you are knowledgeable in this stuff and keen to figure out how you got where you are.
[Android Head-Units] surfer63:
It's not really relevant and therefore completely off-topic for this thread, but OK.

I'm in ICT since 1989 always on the "technical" side, last 10 years in (project)management and coordination. I'm on Linux since 1993 (when you really had to compile eveything yourself and before distributions even existed). I started with Android in spring 2011 with an eclair (version 2.1) tablet. As those versions and the builders often were not very good, I started creating custom roms for those tablets. As of Android 4.0 I stopped as Android became very good and the ROM builders had learned a lot (which means that they were better than me).

I get easily enthusiastic, and just as easily bored, jumping to new things. That is: I completely stopped tinkering with android somewhere in 2013, and started again March 2017 when I got my Joying.

And given the time line: yes, I'm old :)
[Android Head-Units] DragFX:
Wow That one hell of a story:D

I'm one to jump it to things but first have to see it and then jump in.

I own a new Mazda and from there I have ssh in to it and started to play with the scripting with NotePad++ witch is really easy to figure out.

I'v watch a good video on youtube on how to SSH the Infotainment system and to select the system files that need changing. Then just replace it with the new

one ( drag and drop )

I now own the Joying system and want to customize a few minor things like the black screen.

This is more complicated as your taking an app off a device (joying) decompiling it, fix and re compiling it and re open the new apk.

It's seeing how the full possess is done start to finish and from there duplicating it if you know what I mean.

I'm more hands on an visual and be nice to see how this possess works. Age means knowledge lol and I'm not a youngin ether.

Can you direct me to a video that would show me this. I'm sure what your doing here many would benefit.

Can I do this without rooting my system and get away backing up the app and putting it on the desktop and reinstalling the app?

If I ran your setting .apk right now would it wright it of bounce back with a Perishing Error.

You Know, a Big thanks for all your help, much appreciated.
[Android Head-Units] DragFX:
Yea I just did some looking around on youtube and the site you directed me on and downloaded the apktool_2.2.3.jar.

Extracted it on windows and cant find anything on how to start up this program. lol Man I feel like I'm in grad 9 again.

You said it took you 5 min, wanna make a quick vid?? All Buy you a Coffee lol.
[Android Head-Units] alessondanilo:
To execute * .jar files you must have JAVA installed on your machine.

Then navigate to the file and in the cmd type the command:

java -jar apktool_2.2.3.jar
[Android Head-Units] surfer63:
Did you read this?
[Android Head-Units] ZoSo028:
Viper Processing

Pardon the amateurish request, but I'm trying to figure out more clearly how to access what I need to in order to remove this coding and successfully get the Viper driver to "process". I understand what must be done, but could you explicitly break down how I can get into the file that contains this coding? Thank you.
[Android Head-Units] surfer63:
You did search, but not good enough. Read the bottom half of the first post of this thread.

It has links to scripts for 5.1.1 and 6.0.1. (which you forgot to mention. please be specific)
[Android Head-Units] fado5ster:
Ok so I have done a heap of reading/searching so sorry if i missed something but I see plenty of people talking about bluetooth issues but no replies. My phone connects ok but then after awhile (5 minutes - 1 hour) it disconnects randomly, then sometimes tries connecting and succeeds (until the next disconnect) and sometimes fails.

As I have car and normal profiles set up on my phone to turn on/off wifi tethering which is triggered by the bluetooth connection this then sends the wifi crazy giving the same result (connect, disconnect, connect etc.) I then seem to have trouble connecting to the phone again for awhile, whether it be by deleting old bluetooth connection and starting a new or trying to connect using the phone or using the HU or using the NFC sticker. This seems to straighten itself out after 10 minutes or so (or a reboot) and then the process starts all over again.

I had this problem a few times before the 6.0 update (May 25th Update) but nothing like what I have now, Bluetooth is almost unusable, which then kills my wifi too.

As I said I have searched for an answer and may have missed it so please don't jump down my throat :)
[Android Head-Units] edit:
There isn't much you can do about it. I wrote them many times asking for BT tethering and nothing happened so far... Don't expect an update to fix BT problems. In my case I am using 2 phones (Huawei,Samsung) with my unit and so far I did not encounter problems (I am using them to tether via BT... Only). All you can do in my opinion is to wipe the unit, downgrade, wipe it again, install and put everything back... Use it for a while and monitor the BT behaviour .

When you upgraded did you wipe the unit ?

Also remember that your phone shares some of the blame so maybe you should look into that also... For instance deleting all the paired devices and keeping only the Joying HU
[Android Head-Units] TransAmMan:
I'm experiencing the same problem. Bluetooth connects no problem but then randomly disconnects after a few minutes. Sometimes it reconnects, sometimes it doesn't. I had no problem with Bluetooth before the may 25 update. I did the correct installation process too by wiping the unit, install, wipe again. I might go back to the may 12 update. I use Tasker so I get the same annoying Tethering issue too since Bluetooth connection was my trigger. I have a Bluetooth escorts radar detector so now I use that as my trigger. I use a LG G6
[Android Head-Units] edit:
Like I said before, there isn't much you can do but to downgrade to the 12may and eventually to the 8 may release and hope that one of these releases work for you... And please do wipe the unit before and after the flashing.

Also please write to Joying, maybe they will fix it in a future update.
[Android Head-Units] dyabolikarl:
Hey! I installed this and used your icons. But every reboot the icons are missing. It still can not find it when i hit refresh it always comes up with the ? as the icon.

I would really like you use it. It keeps saying something about SD card must not have been mounted. I am using them directly from /sdcard/icons and i also tried use backup option ticked. Same thing every reboot the icons vanish :(

UPDATE:

Had to make sure to use the internal image picker.
[Android Head-Units] shanetrainST:
I have been in discussion with Joying for about 5 weeks in regards to the Bluetooth connection issues.

I would imagine it is disconnecting/reconnecting around the 3min mark?

I have anti-laser priority radar that connects via Bluetooth directly to the ALPConnect app, without using the Joying Bluetooth and it has the same issues.

Have been told it kernel/driver related and Joying have "asked the factory" to look into it about 3 times now. So hopefully they might have it sorted next firmware, but it would not hurt to tell let them know your issues as well
[Android Head-Units] TransAmMan:
I've also mentioned the problem to Joying a couple times. It doesn't happen every time but when it does its maybe 3-5 minutes after starting. I don't remember it in previous updates because they were all close together.

The more annoying problem I'm seeing is Internet access on the unit after may 25 update. It connects fine to my hot spot but the first time I use Google maps, spotify, etc. It's just not accessing the Internet. Maps will say "cannot connect to maps". Now if I just close maps or spotify and relaunch it, everything works fine. Speedtest.net will show 30mb/s. This problem is also random, maybe 40% of the time.
[Android Head-Units] CaptShaft:
We really need a Malaysk ROM for these Joying Intel units. Something like that would go a long way to opening up the potential for these units.
[Android Head-Units] freddienuxx:
I have JY-UM135N2

anybody having issue wit head unit rebooting and setip /optimizating apps like a fresh install. its driving me nuts. and joying support don't help at all. it goes through its process like it's doing a update or something I get white screen for like 2 seconds then android robot wit Chinese lettering then back to setup wit launcher ui3. is this a power issue or apps issue? and help would be great please
[Android Head-Units] naplesbill:
I would try flashing from SD or usb again
[Android Head-Units] freddienuxx:
I did. no dice.
[Android Head-Units] dyabolikarl:
That's some messed up stuff. firmware update to 6.0?
[Android Head-Units] freddienuxx:
yea I got from amazon wit 6.0 already installed but I'm gonna follow guide on page 65. I just turn car on and its back stuck on android boot logo/setup gonna wait for to finish then follow the steps
[Android Head-Units] freddienuxx:
first of I want to say thank so much for your guide on the random reboots flashing the update. I was going nuts getting ready to send unit back to amazon. that's why I luv the android community. Joying was not helpful at all. again thank you so much [MENTION=309187]edit[/MENTION] I'm speaking for all the android community thanks again

---------- Post added at 01:45 AM ---------- Previous post was at 01:42 AM ----------

thank you so much man for your guide. I was having same issue as the post beneath yours. thx again
[Android Head-Units] tleclaire:
I'm having exatcly the same issues...
[Android Head-Units] edit:
Write to Joying please... Maybe we can push them to release an update bug free... If you did please write them again asking for a fix.

Thank you
[Android Head-Units] Shiwantha:
Copy the icons to the internal memory. Ideally, when you select an icon, you should only see icon name after selecting it. If you see a path to icon, that mean the image picker used not doing the right job. I use root explorer and select widget icons straight from the internal folder.
[Android Head-Units] tleclaire:
Done!
[Android Head-Units] edit:
Once again, thank you.

Like I said in other posts with the Android having complete access to the BT chipset on this platform they have a HUGE advantage over any other head unit made by other Chinese brand... Past and present.

Unfortunately they crippled the good hardware with crappy software that denied BT tethering for us... Or pairing other BT hardware.

I pushed and I am still pushing them to develop more the BT section of their units and advertise the feature more.
[Android Head-Units] dyabolikarl:
I did all that. The issue was using gallery instead of DVR picker. :) thanks for the instructions anyways :)
[Android Head-Units] derschnelle:
Short question, does "OK Google" work for you with the newest rom? It used to work for me on 8th May-version, but though I can enable "on every screen" in settings, there is no response from the app.

I don't mind the sleep-issue as I'm not using it right now.
[Android Head-Units] TransAmMan:
I emailed them all the issues I've found. I have faith in joying. They legitimately seem like they want to sell the best Android head-unit in the market. I've had 7 joying radios (4.4.4, 5.1.1, 6.01., 7",8", and 10.1") and they've all been great. Theres always bugs with software. Hell my LG G6 has at least half a dozen problems I've found.
[Android Head-Units] Merlous:
Been following all the posts on the Joying units and decided to buy one! It helps in its favour it is the only single din android unit that will fit lol.

Am I right in thinking that currently I'm better buying the 5.1.1 unit? This upgrade seems to be currently causing issues and I'm guessing the factory 6.0.1 will have the same issues.

Will mainly be using Spotify, Sygic car navigation and possibly a radio streaming app as my radio reception is really poor. Unless anyone can comment on the dab+ addition? Though that question might be better for another thread.

Thanks
[Android Head-Units] f1nch87:
Car Android Newbie Questions

Hey i just received my new Joying Sofia.

I typically want to modify everything a bit.

Now my questions:

1. Do you guys freezed or deleted any not neccesarry apps with Titanium Backup? And if yes which ones?

2. Is there a way modify the spotify apk so that it has a much better view for a car multimedia? ( havent tried dpi change yet)

3. Is there a way to have an automatic Bluetooth tether from IPhone to the Joying HU?

4. Is it better to safe the maps of TomTom in SD Card or on Internal Memory? ( i Terms of Performance)

5. Are there any apps (remember cpu-z) to tune the Performance without getting the risk of overheating?

Thx
[Android Head-Units] Astur_Torque:
is better android 6 or 5.1 ROM?
[Android Head-Units] shanetrainST:
Anyone else not getting emails back from Joying? Messaged them a few times and nothing.
[Android Head-Units] Clinton93:
Can anyone confirm if their USB dac outputs sound on joying headunits? I heard sometimes it only outputs 3rd party sounds and not stock android apps.
[Android Head-Units] midmayzs:
Hi freddienuxx,

I would like to asking You, what is Your experience with FM radio on 6.0? Is it working well on 6.0? The AF Function is working ok? The Radio reception is fine? Of course if You are using FM Radio...

Thank You very much Your answer!
[Android Head-Units] tbd@immigrantsong.de:
These are great! Many thanks!
[Android Head-Units] CadillacMike:
they have not been active on the forum either. not sure if it is a holiday or something, but it has been unusually quiet
[Android Head-Units] freddienuxx:
I have no issues. everything is working fine
[Android Head-Units] CaptShaft:
Lengthy GPS Lockon?

Can anyone here comment on whether the android 6.0 update fixes the bug where it takes 5-10 minutes before the GPS locks on?

Waze, Offline Maps, the result is the same.
[Android Head-Units] dyabolikarl:
I haven't got this issue on 6.0. But i started on 6.0 so can't comment if it was bad on 5.11.
[Android Head-Units] thedru13:
Didn't fix waze for me. I still have issue with latest update. In fact for me it has gotten worse.
[Android Head-Units] Dvalin21:
Your better off than I'm was, I'm not even able to see that option
[Android Head-Units] Merlous:
On Facebook it says about staff taking holidays...

Post from 27th June:

Joying Team have 3 holidays to travel, so all the emails or messages will response later. Thank you for your understanding and inconvenience.
[Android Head-Units] edit:
I just got answers to 2 emails I wrote them yesterday...
[Android Head-Units] Merlous:
I'm still waiting from an email the other day... but no rush as might wait for this cooler running digital amp version as might be better for my car.
[Android Head-Units] ziofester70:
AF doesn't works! The radio switch to the best local station and not to the AF station. With the AF on the radio app is completely unusable.
[Android Head-Units] wainsie:
hi i have updated mine and have lost the cd audio app file, have tried the dvd firmware several times and am still unable to view the cds when inserted plays in background but no app, does anyone have the apk file for this please

many thanks in advance
[Android Head-Units] BIG_BADASS:
Has this been tested?
[Android Head-Units] midmayzs:
Thank You Your answer! It is very good to hear, that the AF function is working well, and changing radio frequency properly! Thank You, good news!
[Android Head-Units] surfer63:
No, it is not. The AF functionality is incorrectly implemented, probably because it is not used in China and the Chinese programmers didn't read the specifications correct.

On the Joying radios (and a lot of the other brands) the AF function simply searches for the strongest frequency available. Not for the strongest Alternative Frequency for the station you are currently listening to.
[Android Head-Units] ohhdangnickson:
so Im rooted on my JY-UL135N 6.0.1 may 25th firmware just use adaway viper and titanium backup every time this thing reboots i have to redo everything thank god for titanium backup and the nova launcher backup option any ideas as to why this happens? it randomly reboots its self it happened twice yesterday and that was the first time it happened in a few weeks
[Android Head-Units] biggy238:
How does the OS start the last audio input after sleep?

I can't get viper to survive a key cycle, I have to interact with it to get it to process.
[Android Head-Units] freddienuxx:
I had same issue go to page 65 on this thread and read the directions to make it stop
[Android Head-Units] Wilk7:
Also changed the BT mod for a similar look, I posted it.
[Android Head-Units] edit:
OK, officially this Joying unit the android 6 update and the 25May update (the latest) especially... this combination... is driving me insane !

Two things (that turned into 4):

1. DON'T use Google app because it interferes with Poweramp and XiiaLive and breaks the sleep pushing the unit to shutdown.

2. When I use google voice recognition from Waze to enter an address by voice the music is playing loud in the background because the Google App is not able to turn the volume down on Poweramp like it does on my phone and like it should do

3. If you use the Google app and NoKill Custom Keys mod it will delay the play command to the Poweramp by 15-18 seconds for no good reason.

After editing the launcher.sh for a few times trying to deal with the 15-18 seconds delay...it simply stopped working... AT ALL.

4.. I installed the BluetoothTethering.apk, worked fine for a few days and today decided to use the latest version (the one that disables the wi-fi automatically) and guess what, after renamed the old apk and copied the new one giving it the needed rights and restarting.... the system optimised the new BTTether.apk but the app did NOT show up... at all. Restarted again... nothing... renamed the folder... nothing.... renamed the app like the old one the renamed back the folder... nothing.... I HAD no way of bringing the BTTether to show up....

For the Nth time, I am sorry that I've update to android 6.

I'll add this rant on my Q&A thread...
[Android Head-Units] tleclaire:
This App fixed it for me 100%:

https://play.google.com/store/apps/details?id=by.zatta.agps
[Android Head-Units] TransAmMan:
I've been seeing a lot of joying videos for the new digital surround sound models. Is this a software update their going to roll out or completely new units? The backs look different than all the 5.1.1 and 6.0.1 models.
[Android Head-Units] CadillacMike:
I am assuming they are all new units, but they haven't really posted much information other than those videos
[Android Head-Units] kampfschachtel:
as I was forced to go to 6 with the new unit I received from joying that are not good news:(
[Android Head-Units] edit:
If you keep it stock... it's ok... but the more you want to mod it the more you get into problems... and some problems simply can't be solved... unless you know programming, android,scripting... all that jazz.