<meta-dataandroid:name="com.huawei.messaging.default_notification_icon"android:resource="@drawable/Icon Resource Name" />
<!-- [START fcm_default_icon] --><!-- Set custom default icon. This is used when no icon is set for incoming notification messages.See README(https://goo.gl/l4GJaQ) for more. --><meta-dataandroid:name="com.google.firebase.messaging.default_notification_icon"android:resource="@drawable/Icon Resource Name" /><!-- Set color used with incoming notification messages. This is used when no color is set for the incomingnotification message. See README(https://goo.gl/6BKBk7) for more. --><meta-dataandroid:name="com.google.firebase.messaging.default_notification_color"android:resource="@android:color/white" /><!-- [END fcm_default_icon] -->
nativeResources/android/res/drawable folder and rename the resource file to huawei_private_icon.png. As shown in the figure:
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