Android Question java.lang.NoClassDefFoundError ...MotionEventCompat;(SOLVED)

I

iCAB

Well-Known Member
Licensed User
Longtime User
Hi All,

I am getting this error now. It happens whenever I click a SlideSwitch.

java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v4/view/MotionEventCompat;

I believe it is related to upgrading to B4A 10.2 and/or the android_sdk

Last actions:
  1. re-installed B4A 10.2
  2. fresh install of android SDK manager
  3. deleted appcompat from internal libraries folders
  4. downloaded appcompat 4.0 and unzipped in internal folder.

I am also attaching the full error log.

Can someone help please.

Thanks,
ICAB
 

Attachments

  • ErrorLog.txt
    4.1 KB · Views: 1,610
Sort by date Sort by votes

DonManfred

Expert
Licensed User
Longtime User
iCAB said:
deleted appcompat from internal libraries folders
Click to expand...
WHY? NO single reason to delete any of the internal libbraries.

Where does the dependency of android/support/v4/view/MotionEventCompat come from?
Try to change the dependency to the matching AndroidX Artifact.
 
Upvote 0
I

iCAB

Well-Known Member
Licensed User
Longtime User
Thanks Don for your reply

DonManfred said:
WHY? NO single reason to delete any of the internal libbraries.
Click to expand...

I was reading this thread: https://www.b4x.com/android/forum/t...-view-viewconfigurationcompat.117655/#content, in post #13 Erel suggested to delete the internal appcompat and install the latest one, so I tried it just in case. It didn't make a difference. I can restore the old one if needed.

DonManfred said:
Where does the dependency of android/support/v4/view/MotionEventCompat come from?
Try to change the dependency to the matching AndroidX Artifact.
Click to expand...
I have no idea, to be honest with you. All what I know is that this code was working for years as is. I am not sure at which point this started happening.
Also I am not sure if it makes any difference, but it is worth mentioning that the SlideSwitch was added using code and the the designer.

Other posts suggested to run Jetify, which I did as well,

Any ideas?

Thanks,
iCAB
 
Upvote 0
I

iCAB

Well-Known Member
Licensed User
Longtime User
I have followed the instructions several times and installed B4A from scratch on multiple stations.
Some of the libraries that we are using require updating some of the packages in the SDK Manager, and therefore after completing the instructions I find that I still have to run the SDK manager GUI and install the recommended updates.
Is there anything that I can try without having to uninstall and re-install everything?
 
Upvote 0
I

iCAB

Well-Known Member
Licensed User
Longtime User
Hi Erel

Erel said:
You need to run the jetifier tool. SlideSwitch is based on the old Android Support library.
Click to expand...
Sorry I forgot to mention that I already did that

Erel said:
Why aren't you using the nicer, cross platform B4XSwitch view?
Click to expand...
Up until this incident, the code is working good for me, as I can control the slideswitch a bit more, in terms of size & color.

I would like to have this issue resolved somehow as I hate to change the current layout, and the exact same code is used in several apps.

Please let me know what else I can try.

Thanks,
iCAB
 
Upvote 0
I

iCAB

Well-Known Member
Licensed User
Longtime User
It's working after moving the SlideSwitch library to the additional libraries folder and running jetifier.

Thanks for the exceptional support. You're the best.
iCAB
 
Upvote 0
You must log in or register to reply here.

Similar Threads

  • Question
Android Question NoClassDefFoundError error and force close app
Replies
3
Views
539
Erel
K
  • Question
Android Question Error when using HttpJob (java.lang.NoClassDefFoundError: Failed resolution of: Lkotlin/jvm/internal/Intrinsics;)
Replies
2
Views
2K
Erel
  • Question
Android Question java.lang.NoClassDefFoundError
Replies
9
Views
3K
adriano.freitas
  • Locked
  • Article
Android Example AppCompat with ToolBar - minimal example
2 3
Replies
42
Views
81K
Erel
M
  • Question
Android Question java.lang.NoClassDefFoundError on library
Replies
4
Views
5K
TOCC
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…