Android Ntp系统校时流程

Android Ntp 系统校时相关

一、系统NTP服务启动

​ 系统NewNetworkTimeUpdateService服务由system_server启动时创建并注册到ServiceManager,可通过Binder的network_time_update_service标签获取服务，代码如下：

//frameworks/base/services/java/com/android/server/SystemServer.java
traceBeginAndSlog("StartNetworkTimeUpdateService");
try {
   
   
	if (useNewTimeServices) {
   
   
        networkTimeUpdater = new NewNetworkTimeUpdateService(context);
	}else {
   
   
		networkTimeUpdater = new OldNetworkTimeUpdateService(context);
	}
    Slog.d(TAG,