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One of our customer is facing issue with Xamarin.Forms.Maps in Android.
Even though the bug https://bugzilla.xamarin.com/show_bug.cgi?id=25055 fixes the issue of Maps getting reset,
the pins still keeps on flickering.
The issue is reproducible in the sample given here
I have the same problem. Maps are basically useless because of it.
Version 5.5.4 (build 15)
Installation UUID: fb249e80-2b94-4e1a-bb82-1f0a76379e63
Mono 3.10.0 ((detached/92c4884)
GTK+ 2.24.23 (Raleigh theme)
Package version: 310000031
Apple Developer Tools
Xcode 6.1.1 (6611)
Version: 188.8.131.52 (Business Edition)
Build date: 2014-12-11 14:54:30-0500
Version: 184.108.40.206 (Business Edition)
Android SDK: /Users/csvanefalk/Library/Developer/android-sdk-osx
Supported Android versions:
1.6 (API level 4)
2.1 (API level 7)
2.2 (API level 8)
2.3 (API level 10)
3.0 (API level 11)
3.1 (API level 12)
4.0 (API level 14)
4.0.3 (API level 15)
4.1 (API level 16)
4.2 (API level 17)
4.3 (API level 18)
4.4 (API level 19)
4.4.87 (API level 20)
5.0 (API level 21)
Java SDK: /usr
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)
Release ID: 505040015
Git revision: f93940a35458a18052f1a25e106e62ca970d9c40
Build date: 2014-11-19 15:32:41-05
Xamarin addins: dc23cbd91a3a0e1d326328e1229e86c942a49ec8
Mac OS X 10.10.1
Darwin Christophers-MacBook-Pro.local 14.0.0 Darwin Kernel Version 14.0.0
Fri Sep 19 00:26:44 PDT 2014
This is still reproducible as of Forms 1.3 stable.
Fixed in next pre-release
As of 220.127.116.1194-pre1 this is still not fixed. The problem is clearly with the implementation of Xamarin.Forms.Maps.Android.MapRenderer.OnCollectionChanged(object sender, NotifyCollectionChangedEventArgs notifyCollectionChangedEventArgs) which forces recreation of all markers on every change so when you create 50 markers this 50 removals of all markers and 50 additions of all added markers so far.
Just to be diligent about record-keeping, I'll note that 18.104.22.16894-pre1 was released on December 24, before the fix was applied. If any users see the problem after the next prerelease, be sure to let us know. Thanks!
I apologize, I somehow thought you posted it on December 22nd, not 26th. Makes perfect sense now.
@Vladislav, no worries. Better safe than sorry :)