example/ivy: make ivy work again

This CL allows a (super) outdated Xcode project - the Pob Pike's Ivy
work again and can compile and run on the latest iOS (tested on iOS 15
beta 8).

There are some changes to the project that might be worth mentioning:

- The UIWebView is deprecated in iOS 10, this CL migrates the code to
use the latest recommended WKWebView.
- The old project does not compatible with iOS 9 and later, the CL upgrades
the development target to iOS 14, and makes it compatible with all
all orientation (Portrait, landscape, upside down).
- The old Launch.storyboard is deprecated, the Main.storyboard cannot
be opened (will cause Xcode crash), this change slightly reworked on
the UI management, and merges the purpose of Launch.storyboard as well
as Main.storyboard into the single Main.storyboard.
- Injects a meta tag into the HTML header so that the fonts are properly
scaled on (very) high-resolution display.
- The app is not only tested on a simulator but also physically tested
on an iPhone 12 Pro.

See screenshots:

- iOS Home: https://changkun.de/midgard/img/ivy-ios-home.png
- iOS Help: https://changkun.de/midgard/img/ivy-ios-help.png
- Mac Home: https://changkun.de/midgard/img/ivy-mac-home.png
- Mac Help: https://changkun.de/midgard/img/ivy-mac-help.png

Change-Id: I1b8dec6b17d5722fddb1011453b3c8f86e4900e4
Reviewed-on: https://go-review.googlesource.com/c/mobile/+/346949
Run-TryBot: Hajime Hoshi <hajimehoshi@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Hajime Hoshi <hajimehoshi@gmail.com>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
46 files changed
tree: 7ac77fd52877f7baaf8ae59d2d15a4a16d88edea
  1. .gitattributes
  2. .gitignore
  8. README.md
  9. app/
  10. asset/
  11. bind/
  12. cmd/
  13. codereview.cfg
  14. doc/
  15. event/
  16. example/
  17. exp/
  18. geom/
  19. gl/
  20. go.mod
  21. go.sum
  22. internal/
  23. testdata/

Go support for Mobile devices

Go Reference

The Go mobile repository holds packages and build tools for using Go on mobile platforms.

Package documentation as a starting point:

Caution image

The Go Mobile project is experimental. Use this at your own risk. While we are working hard to improve it, neither Google nor the Go team can provide end-user support.

This is early work and installing the build system requires Go 1.5. Follow the instructions on golang.org/wiki/Mobile to install the gomobile command, build the basic and the bind example apps.

Contributions to Go are appreciated. See https://golang.org/doc/contribute.html.