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After upgrading Xamarin.Android to 5.1, we started to experience the wrong results when comparing the negative decimal values. It seems that it ignores the negative sign.
E.g. (decimal)0 < (decimal)-1 is true or (decimal)-2 > (decimal)1 is true
It only happens on Lollipop devices (Nexus 7 with Android 5.1 and LG G3 with Android 5.0). It works well on KitKat.
Our build has armeabi, armeabi-v7a and x86 (it has no 64bit support). The Target API level is 21 (Android 5.0). Minimum API level is 10 (Android 2.3.3).
It happens with both Mac and Windows version of the Xamarin tools.
My config is:
Version 5.9.1 (build 3)
Installation UUID: ae320932-d643-493d-bc90-afeb5e20e5c9
Mono 4.0.0 ((detached/d136b79)
GTK+ 2.24.23 (Raleigh theme)
Package version: 400000143
Apple Developer Tools
Xcode 6.3.1 (7703)
Version: 188.8.131.527 (Business Edition)
Build date: 2015-04-27 04:38:13-0400
Version: 184.108.40.206 (Business Edition)
Android SDK: /Users/juro/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
2.3 (API level 10)
4.0.3 (API level 15)
4.4 (API level 19)
5.0 (API level 21)
Java SDK: /usr
java version "1.7.0_76"
Java(TM) SE Runtime Environment (build 1.7.0_76-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.76-b04, mixed mode)
Xamarin Android Player
Version: Unknown version
Location: /Applications/Xamarin Android Player.app
Release ID: 509010003
Git revision: aad75a6e7e48f18120ce41f47d0ff2c6216f49c3
Build date: 2015-05-08 12:46:18-04
Xamarin addins: 1246b3044cbb7f56a217334f8fc5489ef8eefe3f
Mac OS X 10.10.3
Darwin 14.3.0 Darwin Kernel Version 14.3.0
Mon Mar 23 11:59:05 PDT 2015
*** This bug has been marked as a duplicate of bug 29570 ***