• Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
0
Question by ibrendan · May 30, 2014 at 03:46 PM · assetbundle

How can i ensure .assetbudle compatibility?

I need to find a way to make my asset bind;es for mobile both forward and backward compatible.

I have published an app for iOS and Android. In this app, users are able to access a catalogue of server-based asset bundles and then download them. I built the app and the asset bundles using Unity 4.3.4. I would like to upgrade my project to Unity 4.5. I would then like to continue distributing assetbundles to the server. However, I understand that asset bundles are not backwards compatible.

If I update the app, and update all the assetbudles, I still can't guarantee that all users of the app will have the latest, updated version.

Is there any way around this?

Should I be distributing this content a different way?

Comment
Add comment
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

1 Reply

· Add your reply
  • Sort: 
avatar image
0

Answer by supernat · May 30, 2014 at 04:27 PM

It really depends on your architecture, but if asset bundles (and usually they do) make the most sense, you just need a mechanism in your app to differentiate asset versions so that older apps can't load them while newer apps can, which will force your users to update their app to get newer assets. I would not touch the older asset bundles, those should still work in the latest version of Unity and should be left alone on the server (I can't guarantee this, but I would be shocked if the older asset bundles are not loadable in newer apps, while it makes sense that newer asset bundles may not work in older apps [i.e. not backward compatible]). Another mechanism you might introduce is to send notifications (either push or in-app) that will inform the user of new assets available, but when they go to click on it, they are taken to an update page at that device's store.

Comment
Add comment · Show 2 · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image ibrendan · Jul 09, 2014 at 05:57 AM 0
Share

Hi Supernat! Thanks for getting back to me on this. I'm currently testing to make certain of the forward compatibility of asset bundles. I guess I'm going to have to create my asset bundles in Unity 4.3 and then release my app in Unity 4.5. That should give users enough time time to update their apps before I roll out new asset bundles.

avatar image ibrendan · Aug 05, 2014 at 09:42 AM 1
Share

So, a few months down the line, and plenty of going around the proverbial mulberry bush, I have come the conclusion that asset bundles are not backward compatible. Hopefully someone is aware of the need for this to be fixed.

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Welcome to Unity Answers

If you’re new to Unity Answers, please check our User Guide to help you navigate through our website and refer to our FAQ for more information.

Before posting, make sure to check out our Knowledge Base for commonly asked Unity questions.

Check our Moderator Guidelines if you’re a new moderator and want to work together in an effort to improve Unity Answers and support our users.

Follow this Question

Answers Answers and Comments

21 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

How to import the object from server to unity 2 Answers

BuildOptions.BuildAdditionalStreamedScenes work with players other than webplayer? 1 Answer

how can i put components in external dlls and store dlls in asset bundles 4 Answers

Are AssetBundles a solid solution for providing in-app purchasses in my app ? 1 Answer

Memory leak using bundles. 1 Answer


Enterprise
Social Q&A

Social
Subscribe on YouTube social-youtube Follow on LinkedIn social-linkedin Follow on Twitter social-twitter Follow on Facebook social-facebook Follow on Instagram social-instagram

Footer

  • Purchase
    • Products
    • Subscription
    • Asset Store
    • Unity Gear
    • Resellers
  • Education
    • Students
    • Educators
    • Certification
    • Learn
    • Center of Excellence
  • Download
    • Unity
    • Beta Program
  • Unity Labs
    • Labs
    • Publications
  • Resources
    • Learn platform
    • Community
    • Documentation
    • Unity QA
    • FAQ
    • Services Status
    • Connect
  • About Unity
    • About Us
    • Blog
    • Events
    • Careers
    • Contact
    • Press
    • Partners
    • Affiliates
    • Security
Copyright © 2020 Unity Technologies
  • Legal
  • Privacy Policy
  • Cookies
  • Do Not Sell My Personal Information
  • Cookies Settings
"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.
  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges