问题
I upload an app in play store.Now i got a comment that it shows default android icon in some devices (galaxy s4,nexus 5 )instead of app icon.I placed app icon in drawable-ldpi,drawable-mdpi,drawable-hdpi,drawable-xhpdi and drawable-tvdpi. Default android icon is present outside resource folder as ic_launcher-web. While testing it showed the app icon itself in galaxy s4.But when it downloaded from play store it is showing default app icon.What I should do to correct this problem?
回答1:
Since app icon has very little impact on the system performance, I recommend that you to put a 256*256 icon in the default /res/drawable/ resource folder.
回答2:
You need to put the app icon in drawable-xxhdpi and drawable-xxxhdpi too.
Reference: http://developer.android.com/design/style/iconography.html
回答3:
I had the same problem and the issue was with app icon resource.
I had defined an adaptive icon in a mipmap-anydpi-v26 folder. Both for standard and round resources. For other devices I had standard launcher icon in respective mipmap-<density-qualifier>. And in AndroidManifest.xml
android:icon="@mipmap/ic_launcher"
android:roundIcon="@mipmap/ic_launcher_round"
The default icon was displayed on Devices that had lower version of Android than 26 but launcher supported roundIcon. Cause this resource was not existing for this devices. Add ic_launcher_roundresource for all densities solved the problem
来源：https://stackoverflow.com/questions/20535249/android-app-shows-default-android-icon-in-some-devices