[Bug] XF 5.0.0.2612 : a build error for minimum Android API levels 19, 20

[makeman-p81]

Description

Can not build Android apps with minimum API levels 19 or 20 since update Xamarin Forms 5.0.0.2612.

Steps to Reproduce

1. create a blank app
2. set minimum android API level to 19 or 20
3. upgrade Xamarin Forms to version 5.0.0.2612

Expected Behavior

Successful build

Actual Behavior

Failed build

Basic Information

• Version with issue: 5.0.0.2612
• Last known good version: 5.0.0.2578
• Platform Target Frameworks:
  • Android: set min API level 19 or 20

Build Logs

https://gist.github.com/makeman-p81/1cd12698f83548fe8defc8de9241560c

[MitchBomcanhao]

did you read the error messages and do the recommended changes?

[makeman-p81]

@MitchBomcanhao
Does you mean a warning 'NU1605: Detected package downgrade' ?
But it caused by iOS project, not by Android.

[MitchBomcanhao]

@makeman-p81 no, read line 110 of the log you posted, and enable multi dex in the android project

[makeman-p81]

@MitchBomcanhao
Thank, it has help me to build app, but before a default value of this option worked correctly for the current case.
Now a release .apk has taken 15.6 Mb (+2 Mb) vs 13.6 Mb on the previous version of XF.

[jfversluis]

Looks like this one is solved