设置网络接口优先级

设置网络接口优先级：数字越大，优先级越大

framework/opt/net/ethernet/java/com/android/server/ethernet/EthernetNetworkFactory.java

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/**        * A map of TRANSPORT_* types to TransportInfo, making scoring and legacy type information        * available for each type an ethernet interface could propagate.        *        * Unfortunately, base scores for the various transports are not yet centrally located.        * They've been lifted from the corresponding NetworkFactory files in the meantime.        *        * Additionally, there are no legacy type equivalents to LOWPAN or WIFI_AWARE. These types        * are set to TYPE_NONE to match the behavior of their own network factories.        */       private static final SparseArray<TransportInfo> sTransports = new SparseArray();       static {           // LowpanInterfaceTracker.NETWORK_SCORE           sTransports.put(NetworkCapabilities.TRANSPORT_LOWPAN,                   new TransportInfo(ConnectivityManager.TYPE_NONE, 30));           // WifiAwareDataPathStateManager.NETWORK_FACTORY_SCORE_AVAIL           sTransports.put(NetworkCapabilities.TRANSPORT_WIFI_AWARE,                   new TransportInfo(ConnectivityManager.TYPE_NONE, 1));           // EthernetNetworkFactory.NETWORK_SCORE           sTransports.put(NetworkCapabilities.TRANSPORT_ETHERNET,                   new TransportInfo(ConnectivityManager.TYPE_ETHERNET, 70));           // BluetoothTetheringNetworkFactory.NETWORK_SCORE           sTransports.put(NetworkCapabilities.TRANSPORT_BLUETOOTH,                   new TransportInfo(ConnectivityManager.TYPE_BLUETOOTH, 69));           // WifiNetworkFactory.SCORE_FILTER / NetworkAgent.WIFI_BASE_SCORE           sTransports.put(NetworkCapabilities.TRANSPORT_WIFI,                   new TransportInfo(ConnectivityManager.TYPE_WIFI, 60));           // TelephonyNetworkFactory.TELEPHONY_NETWORK_SCORE           sTransports.put(NetworkCapabilities.TRANSPORT_CELLULAR,                   new TransportInfo(ConnectivityManager.TYPE_MOBILE, 50));       }