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Reduce android example APK size (#8932)

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# Objective

The current mobile example produces an APK of 1.5 Gb.
- Running the example on a real device takes significant time (around
one minute just to copy the file over USB to my phone).
- Default virtual devices in Android studio run out of space after the
first install. This can of course be solved/configured, but it causes
unnecessary friction.
- One impression could be, that Bevy produces bloated APKs. 1.5Gb is
even double the size of debug builds for desktop examples.

## Solution

- Strip the debug symbols of the shared libraries before they are copied
to the APK

APK size after this change: 200Mb
Copy time on my machine: ~8s

## Considered alternative

APKs built in release mode are only 50Mb in size, but require setting up
signing for the profile and compile longer.
This commit is contained in:
Niklas Eicker 2023-07-06 01:21:33 +02:00 committed by GitHub
parent e03dd4d695
commit b61397e32b
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examples/mobile/Cargo.toml
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@ -18,6 +18,8 @@ package = "org.bevyengine.example"
apk_name = "bevyexample"
assets = "../../assets"
resources = "../../assets/android-res"
# This strips debug symbols from the shared libraries, drastically reducing APK size. If you need them, remove the option.
strip = "strip"
build_targets = ["aarch64-linux-android", "armv7-linux-androideabi"]
[package.metadata.android.sdk]