Bug 60587 - Unloading image mscorlib.dll when XF ListView is scrolled by fling action at first time.
Summary: Unloading image mscorlib.dll when XF ListView is scrolled by fling action at ...
Alias: None
Product: Forms
Classification: Xamarin
Component: Android ()
Version: 2.4.0
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2017-11-09 06:58 UTC by Dinesh
Modified: 2018-02-01 05:52 UTC (History)
7 users (show)

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

Sample and Screenshot (1.59 MB, application/x-zip-compressed)
2017-11-09 06:58 UTC, Dinesh

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Description Dinesh 2017-11-09 06:58:11 UTC
Created attachment 25613 [details]
Sample and Screenshot

Hi Team,

We are facing the following logcat in the output window when fling action is performed for scrolling at first time in Xamarin Forms ListView in Android platform, which resultant to degrade in smooth scrolling (i.e., Scrolling gets stuck at some time). So, we suspect that this delay in scrolling arises due to the following logcat.

11-09 11:40:41.736 W/Mono    (17380): The request to load the assembly mscorlib v4.0.0.0 was remapped to v2.0.5.0
11-09 11:40:41.737 D/Mono    (17380): Unloading image mscorlib.dll [0x8c523f00].
11-09 11:40:41.737 D/Mono    (17380): Config attempting to parse: 'mscorlib.dll.config'.
11-09 11:40:41.737 D/Mono    (17380): Config attempting to parse: '/usr/local/etc/mono/assemblies/mscorlib/mscorlib.config'.

Xamarin Forms version:
TargetFrameworkVersion: 7.1

Replication Procedure:
Step 1: Run the attached sample in Android platform.
Step 2: Open the Output window
Step 3: Now the ListView is loaded and lot of logcat is displayed in output window.
Step 4: Clear the logcat from the output window.
Step 5: Perform fling action to scroll.
Step 6: Note that above logcat is displayed in the output window and the scrolling gets stuck at this time.(Issue)
Step 7: After this, the logcat is not displayed in output window and smooth scrolling is occurred.

Can you please look into this and revert us the further details asap. We have attached the screenshot and sample too for your reference.

Also, can you please explain or provide a solution on how to clear this logcat if custom controls are used. Since, it was replicated in custom controls too.

Note: We have tested in all CachingStrategy of ListView and it is replicated in all scenarios.

Dinesh Babu Yadav
Comment 2 Dinesh 2018-02-01 05:52:20 UTC
Can you please update the status for this? Since, it has been dragging for a long time.