Android7.1开机默认静态ip调试

先来看看系统的进程的入口SystemServer ,main方法里通过SystemServiceManage启动EthernetService

//frameworks/base/services/Java/com/Android/server/SystemServer.java

    public final class SystemServer {  
      private static final String ETHERNET_SERVICE_CLASS =  
            "com.android.server.ethernet.EthernetService";  
      public static void main(String[] args) {  
        new SystemServer().run();  
      }  
      private void run() {  
        startOtherServices();  
      }  
      private void startOtherServices() {  
        if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_ETHERNET)) {  
                    mSystemServiceManager.startService(ETHERNET_SERVICE_CLASS);  
        }  
      } 

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EthernetService 被启动之后就干了三件事儿: 
1.构造函数中创建EthernetServiceImpl 对象 
2.在onStart()方法 中将EthernetServiceImpl对象注册进了ServiceManager。 
3.当系统进入到 PHASE_SYSTEM_SERVICES_READY时状态时,EthernetService的onBootPhase()方法被触发，调用EthernetServiceImpl .Start();

//frameworks/opt/net/ethernet/java/com/android/server/ethernet/EthernetService.java

    public final class EthernetService extends SystemService {

    private static final String TAG = "EthernetService";
    final EthernetServiceImpl mImpl;

    public EthernetService(Context context) {
        super(context);
        mImpl = new EthernetServiceImpl(context);
    }

    @Override
    public void onStart() {
    // 将ServiceImpl注册到ServiceManager  
        Log.i(TAG, "Registering service " + Context.ETHERNET_SERVICE);
        publishBinderService(Context.ETHERNET_SERVICE, mImpl);
    }

    @Override
    public void onBootPhase(int phase) {
     //当系统运行到PHASE_SYSTEM_SERVICES_READY状态是时，Service启动EthernetServiceImpl   
        if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY) {
            mImpl.start();
        }
    }
}

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•  IpConfiguration 这个类就是以太网配置信息类啊!!!!!!! 模式是DHCP啊还是静态啊,静态的ip ,网关啥的都存在这里头

//frameworks/opt/net/ethernet/java/com/android/server/ethernet/EthernetConfigStore.java
public class EthernetConfigStore extends IpConfigStore {

    private static final String ipConfigFile =  Environment.getDataDirectory() +
            "/misc/ethernet/ipconfig.txt";

    public EthernetConfigStore() {
    }

    public IpConfiguration readIpAndProxyConfigurations() {
        SparseArray networks = readIpAndProxyConfigurations(ipConfigFile);

        if (networks.size() == 0) {
            Log.w(TAG, "No Ethernet configuration found. Using default.");
            return new IpConfiguration(IpAssignment.DHCP, ProxySettings.NONE, null, null);
        }

        if (networks.size() > 1) {
            // Currently we only support a single Ethernet interface.
            Log.w(TAG, "Multiple Ethernet configurations detected. Only reading first one.");
        }

        return networks.valueAt(0);
    }

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• 可知，ipconfig存储在 “data/misc/ethernet/ipconfig.txt”中。那么解决方案也就来了

step 2配置以太网设置默认为静态ip

• 1.手动配置好一份静态ip

• 2.取出以太网配置文件: ipconfig.txt 
  进入命令行,输入 
  adb root 
  adb pull /data/misc/ethernet/ipconfig.txt 
  
  因为是在桌面输入的命令行,所以复制出的ipconfig.txt 的位置在桌面

• 3.device.mk文件中 将 ipconfig 预设置到固定位置 
  1)找到一份源码编译时一定会编译的device.mk 文件,在device.mk中添加 
  PRODUCT_COPY_FILES += $(LOCAL_PATH)/ipconfig.txt:system/etc/ipconfig.txt 
  2)将刚刚拷贝的ipconfig.txt 文件复制到与device.mk同目录下. 
  3)将上面提到的EthernetConfigStore 类中的ipConfigFile 修改为

  private static final String ipConfigFile = Environment.getRootDirectory() +
          "/etc/ipconfig.txt";

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  参考 https://blog.csdn.net/qq_34705828/article/details/76283929安卓5.1的调试