I have provided an update for my application via Android market. After new application installed from market, my app icon alone has not changed to the new app icon in the Android Launcher screen.
However, if the mobile restarted once, the new icon is reflected in Launcher screen too. It looks like my old app icon cached in Android Launcher.
What could be an issue? Is that a bug with Android or am I missing something?
The app in the app launcher (drawer) should be updated, but the shortcuts won't be updated until the next refresh of the homescreen. There isn't much you can do that unfortunately, but the homescreen does refresh itself once in a while, so the new icon will eventually replace the old icon automatically.
I had the same problems and tried different approaches (one was trying to remove programatically the launcher screen's icon and the add the new one; I was able to add the new one but couldn't remove the old one; android:duplicate doesn't replace the old one only avoids to add the new icon and if trying to remove and I as far as I've researched so far was removed starting with ICS). But my conclusion is that there's an Android issue and you can find it posted here: https://code.google.com/p/android/issues/detail?id=54546