开发平台基本信息

芯片: MT8766
版本: Android 12
kernel: msm-4.19

问题描述

客户要求设备默认开启usb共享网络，并且网络共享给PC端时，PC端动态获取到的子网掩码、网关是固定不变的。

解决方法

• 解决方案与之前修改WIFI热点默认名称、密码、IP地址以及默认开启热点类似。

固定子网掩码跟网关

--- a/packages/modules/Connectivity/Tethering/src/android/net/ip/IpServer.java
+++ b/packages/modules/Connectivity/Tethering/src/android/net/ip/IpServer.java
@@ -112,6 +112,7 @@ public class IpServer extends StateMachine {// TODO: have PanService use some visible version of this constantprivate static final String BLUETOOTH_IFACE_ADDR = "192.168.44.1/24";private static final String WIFI_IFACE_ADDR = "192.168.68.68/24";
+    private static final String USB_IFACE_ADDR = "192.168.20.0/24";// TODO: have this configurableprivate static final int DHCP_LEASE_TIME_SECS = 3600;
@@ -660,6 +661,8 @@ public class IpServer extends StateMachine {return new LinkAddress(BLUETOOTH_IFACE_ADDR);}else if (mInterfaceType == TetheringManager.TETHERING_WIFI){return new LinkAddress(WIFI_IFACE_ADDR);
+        }else if (mInterfaceType == TetheringManager.TETHERING_USB){
+            return new LinkAddress(USB_IFACE_ADDR);}return mPrivateAddressCoordinator.requestDownstreamAddress(this, useLastAddress);

默认开启usb共享网络

 import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE;import android.telephony.SubscriptionManager;import static android.net.ConnectivityManager.TETHERING_WIFI;
+import static android.net.ConnectivityManager.TETHERING_USB;import android.os.Handler;import android.os.Looper;import android.net.ConnectivityManager;
@@ -144,6 +145,9 @@ public class SecurityService extends ISecurityService.Stub {ConnectivityManager mConnectivityManager = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);mConnectivityManager.startTethering(TETHERING_WIFI, true /* showProvisioningUi */,mOnStartTetheringCallback, new Handler(Looper.getMainLooper()));
+                mConnectivityManager.startTethering(TETHERING_USB, true /* showProvisioningUi */,
+                    mOnStartTetheringCallback, new Handler(Looper.getMainLooper()));
+Settings.Global.putInt(mContext.getContentResolver(),Settings.Global.ADB_ENABLED, 1);