Other B4A v7.80 has been released!


B4X founder
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I'm happy to release B4A v7.80. This is the largest update of the IDE since the release of the new IDE in v5.0.

Several important components were rewritten to provide more features and better performance:
  • Visual designer properties grid
  • Visual designer views tree
  • Modules tree (new component)
  • Files tree
The major improvements are:
  • Code modules can be loaded from other folders and can be easily shared between projects (including projects targeting other platforms): https://www.b4x.com/android/forum/threads/b4x-modules-files-groups-and-folders.86587/


  • Modules and file tree support grouping:


  • Modules are monitored for external changes.
  • Files tree shows the files icons and allows opening the files with external editors: https://www.b4x.com/android/forum/threads/b4x-external-editors.86592/


  • Modules, files and views can be renamed directly from the relevant tree.
  • Full support for drag and dropping files and modules, including support for dragging multiple items.
  • B4A services and activities can be shared with B4J: https://www.b4x.com/android/forum/threads/b4x-sharing-modules-and-classes.87478/
  • New options when adding modules:


    Copy to folder: Copies the module to the project folder (same as the current behavior).
    Link - relative path: Adds a link to the module with a relative path. Useful when the folder is under or close to the project folder.
    Link - absolute path: Adds a link to the module with an absolute path.

  • Deleted files are moved to the recycle bin.
  • Properties grid and views tree can be filtered.
  • Properties grid is much faster and includes new types of editors:



  • B4A Sdk Manager is included in the IDE:


  • Support for downloading maven resources from Google online repositories. This is an important improvement as Google no longer updates the offline repositories.
  • Java 9 is supported.
  • WebView.ZoomEnabled hides or shows the zoom controls.
  • Better error handling in CallSub calls.
  • Fix for potential race condition in AsyncStreams.
  • Better handling of edge cases where the Activity life cycle events are called multiple times.
  • CallSubDelayed doesn't raise an error if the target sub is missing. This makes it safer to use CallSubDelayed for raising events,
  • Better support for version control. Files are only written when the contents are actually changed.
  • The modules internal attributes are sorted in lexicographical order to reduce random changes.
  • XUI library is now an internal library.
  • Debugger hover window is resizable.
  • Add New Modules / Existing modules menu items in modules tree.
  • Code editor color picker is based on the designer color picker.
  • Open file with default program in Files tree. Also works with double click.
  • Support for opening multiple files at once.
  • Better handling of locked files.
  • Manifest editor replacements are applied to resources created with CreateResource.
  • Bug fixes and other minor improvements.

An email with upgrade instructions will be sent to all developers who are eligible for a free upgrade.
Other developers will receive an email with an upgrade offer.
Last edited:

Peter Simpson

Licensed User
Longtime User
I had developed my programs with Basic4Android up_to ver 5.8 an Releasing with out any error; run well on my school tablets ( ACER ICONIA, Motorola XOOM MZ604)

But my applications are not run with new version B4A 7.8 just bought yesterday.

I even tried to created a new simple with a button and a label but out of luck.

Deleting 7.8 and reinstalling 5.8 then re-opening the bad-luck new simple: it worked on 5.8.

Anyone know WHY?

Can you post the message in the logs when it rains to run if there are any
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Licensed User
Longtime User
After installing, while starting up B4A: I receive an error regarding .NET:

c:\Windows\Microsoft.NET\Framework\v4.0.30319\WPF\wpfgfx_v0400.dll is not suited for Windows or it contains an error.

How can I solve this?
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Active Member
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I opened a project after installing 7.80, and it inserted almost 200 blank lines between the End of Design Text statement and the Project Attributes region (former first line visible in the IDE). Checked it with VIM. I opened a second project, no issue.
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Active Member
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Longtime User
Are you able to reproduce it?
No, sorry, the previous exported zip didn't reproduce. However, it didn't have identical contents to the project contents I opened first in 7.8.
If it reproduces I'll post, and PM to send you the contents.
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Licensed User
Longtime User
Please can you resend my renewal link? Email received but corrupt - unable to open body. I have emailed support but no reply. Don't want to miss out. Thanks.
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