[One .NET] $(AndroidEnablePreloadAssemblies)=False by default (#5790) #5914
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…#5790) Fixes: dotnet#5838 Context: e0da1f1 Partially reverts 522d7fb which reverted d13d0f9 The [`$(AndroidEnablePreloadAssemblies)`][0] property controls whether or not *all* `.dll` files contained within a `.apk` are loaded during process startup. *Not* doing so reduces process startup times, which is desirable, but this also caused certain Xamarin.Forms apps to fail to run as they previously had, as not loading all assemblies during startup broke their Dependency Injection infrastructure. For .NET 6, we feel we have *some* "wiggle-room" to change default semantics, so for .NET 6 projects set the default value of `$(AndroidEnablePreloadAssemblies)` to False, so that assemblies are *not* pre-loaded during process startup. `$(AndroidEnablePreloadAssemblies)` can be set to True within the app's `.csproj` file to return to "legacy" semantics. This will cause all assemblies to be loaded during startup, with a commensurate increase in app startup overheads. [0]: https://docs.microsoft.com/en-us/xamarin/android/deploy-test/building-apps/build-properties#androidenablepreloadassemblies
jonathanpeppers
approved these changes
May 6, 2021
dellis1972
approved these changes
May 6, 2021
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Fixes: #5838
Context: e0da1f1
Partially reverts 522d7fb which
reverted d13d0f9
The
$(AndroidEnablePreloadAssemblies)property controlswhether or not all
.dllfiles contained within a.apkareloaded during process startup. Not doing so reduces process
startup times, which is desirable, but this also caused certain
Xamarin.Forms apps to fail to run as they previously had, as
not loading all assemblies during startup broke their
Dependency Injection infrastructure.
For .NET 6, we feel we have some "wiggle-room" to change default
semantics, so for .NET 6 projects set the default value of
$(AndroidEnablePreloadAssemblies)to False, so that assemblies arenot pre-loaded during process startup.
$(AndroidEnablePreloadAssemblies)can be set to True within theapp's
.csprojfile to return to "legacy" semantics. This willcause all assemblies to be loaded during startup, with a
commensurate increase in app startup overheads.