Bug 60444 - Apksigner fails to sign certain projects that define a low targetSdkVersion in their manifests
Summary: Apksigner fails to sign certain projects that define a low targetSdkVersion i...
Alias: None
Product: Android
Classification: Xamarin
Component: MSBuild ()
Version: 8.2 (15.6)
Hardware: All All
: Normal normal
Target Milestone: 15.6
Assignee: dean.ellis
Depends on:
Reported: 2017-10-30 21:16 UTC by Peter Collins
Modified: 2018-01-08 20:24 UTC (History)
1 user (show)

Is this bug a regression?: Yes
Last known good build: d15-5

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Description Peter Collins 2017-10-30 21:16:25 UTC
I'm seeing one "negative" change in behavior with the introduction of apksigner support. Projects which define a targetSdkVersion lower than 10 (and also have no minimum defined) will now fail to create a signed .apk with the following error messaging. This is not a fatal scenario when using the signing logic in d15-5.

>  /Users/xamarinqa/Library/Developer/Xamarin/android-sdk-macosx/build-tools/26.0.2/apksigner sign --ks "/Users/xamarinqa/.local/share/Xamarin/Mono for Android/debug.keystore" --ks-pass pass:android --ks-key-alias androiddebugkey --key-pass pass:android --min-sdk-version 10 --max-sdk-version 8 --in bin/Debug/com.xamarin.example.phoneword-Signed.apk  (TaskId:342)
>  Min API Level (10) > max API Level (8) (TaskId:342)
> ...
> /Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets(2487,2): error MSB6006: "apksigner" exited with code 1.

At the very least, if this scenario can no longer be supported, we should improve the msbuild error message to include actionable information for the user.

### Steps to reproduce ###
1) Download and build the following project:
2) msbuild /t:SignAndroidPackage PhonewordAndroid.csproj

### Supplemental Info ###
15.5 (good) output:
master (bad) output:

### Environment ###
Operating System: Mac OS X 10.13
Product Name: Xamarin.Android
Branch Name: mono-2017-10
Build Revision: a3ea085eb453d03d1aa4aa4a5b444cd6cf3ca2da
Comment 1 dean.ellis 2017-11-02 15:22:24 UTC
PR up https://github.com/xamarin/xamarin-android/pull/1003
Comment 2 dean.ellis 2017-11-03 07:11:56 UTC
Fixed in Xamarin-android/master/6299c6ec