替换应用图标，两层图标叠加

@@ -17,7 +17,7 @@
         "name": "EntryAbility", // 这里不能改动，和后台推送有绑定
         "srcEntry": "./ets/entryability/EntryAbility.ets",
         "description": "$string:EntryAbility_desc",
-        "icon": "$media:app_icon",
+        "icon": "$media:app_icon_layer",
         "label": "$string:EntryAbility_label",
         "startWindowIcon": "$media:app_icon",
         "startWindowBackground": "$color:start_window_background",

+{
+  "layered-image":
+  {
+    "background" : "$media:app_icon_background",
+    "foreground" : "$media:app_icon_foreground"
+  }
+}
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