Xamarin Oreo Adaptive Icons

问题

Did any of you successfully make use of the "Adaptive Icons" for xamarin android, introduced in Oreo?

I managed to make it work, if the .png images are placed in the Drawable-folders, but not if they are placed in the MipMap-folders.

I have followed the guidelines in this link, and it works when using Android Studio... weird I think?

https://developer.android.com/guide/practices/ui_guidelines/icon_design_adaptive.html

回答1:

Thanks to this blog post I was able to use adaptive Icons in my Xamarin.Forms Android app.

Steps involved

Create an adaptive Icon using Android Studios Image Asset Studio (note that it takes a while before you can actually add a new Image Asset in Android Studio as the editor is first initializing.)
Once the Launcher Item is created you can open the res directory in file explorer.
Copy all mipmap-*-folder into the Xamarin.Forms Android Project Resources directory.
Update the AndroidManifest.xml to contain the new icon and roundIcon asset

<application android:label="MyApp"
               android:icon="@mipmap/ic_launcher"
               android:roundIcon="@mipmap/ic_launcher_round"
               android:appCategory="productivity"></application>

In the MainActivity also update the Icon and RoundIcon values

namespace MyApp.Droid
{
    [Activity(Label = "MyApp", Icon = "@mipmap/ic_launcher", RoundIcon = "@mipmap/ic_launcher_round", Theme = "@style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
    public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
    {

回答2:

Supposedly there is a bug in xamarin android mipmap folder that is well explained here as well as in the Release Notes

There are also some bugzilla reports :

https://bugzilla.xamarin.com/show_bug.cgi?id=56146

https://bugzilla.xamarin.com/show_bug.cgi?id=59904

Hope it helps!

来源：https://stackoverflow.com/questions/47864285/xamarin-oreo-adaptive-icons

标签

xamarin.android

android-8.0-oreo