Define a meta-data attribute for a carrier icon.

This is just a centralized key that a carrier app and various eSIM
infrastructure can agree upon. It may be used to allow the carrier app
to show a custom icon instead of its launcher icon when some UI is
rendering the identity of the carrier. Use of this meta-data is
entirely up to callers.

Fixes: 62580015
Test: TreeHugger
Change-Id: Iaaab8cb8b5108d92b8f687d213daa7917f53fe65

telephony/java/android/telephony/euicc/EuiccManager.java

@@ -156,6 +156,12 @@ public class EuiccManager {
     public static final String EXTRA_EMBEDDED_SUBSCRIPTION_RESOLUTION_CALLBACK_INTENT =
             "android.telephony.euicc.extra.EMBEDDED_SUBSCRIPTION_RESOLUTION_CALLBACK_INTENT";
 
+    /**
+     * Optional meta-data attribute for a carrier app providing an icon to use to represent the
+     * carrier. If not provided, the app's launcher icon will be used as a fallback.
+     */
+    public static final String META_DATA_CARRIER_ICON = "android.telephony.euicc.carriericon";
+
     private final Context mContext;
     private final IEuiccController mController;