long time = getTimeFromNtpServer(mhostAddress);//从获取ntp服务器上获取时间 if (time == -1) { MyLog.e(tag, "async time failed."); } else { SystemClock.setCurrentTimeMillis(time);//设置系统时间 } if (isTurnToSuccess) { isTurnToSuccess = false; mHandler.sendEmptyMessage(MSG_NTP_SEARC...
privatestaticfinalintNTP_VERSION =3; // Number of seconds between Jan 1, 1900 and Jan 1, 1970 // 70 years plus 17 leap days privatestaticfinallongOFFSET_1900_TO_1970 = ((365L * 70L) + 17L) * 24L * 60L * 60L; // system time computed from NTP server response privatelongmNtpTime...
首先初始化NtpTrustedTime类实例,它负责NTP时间获取的具体操作,而NetworkTimeUpdateService服务决定何时触发NTP时间请求。 NtpTrustedTime实例的构造过程如下,它采用了单例设计模式: private NtpTrustedTime(String server, long timeout) { if (LOGD) Log.d(TAG, "creating NtpTrustedTime using " + server); mServer...
* Returns the time computed from the NTP transaction. * * @return time value computed from NTP server response. */ public long getNtpTime() { return mNtpTime; } /** * Returns the reference clock value (value of * SystemClock.elapsedRealtime()) corresponding to the NTP time. * * @retur...
创建SntpClient实例,调用SntpClient.requestTime()使用UDP协议请求网络时间 frameworks/base/core/java/android/net/SntpClient.java 发起服务器请求,并处理返回结果 frameworks/base/core/res/res/values/config.xml Android系统配置ntpServer的文件路径 常用的可用的NTP服务器地址 ...
"time.apple.com", "ntp3.aliyun.com", "cn.pool.ntp.org" Observable.create((ObservableOnSubscribe<Long>)emitter->{for(inti=0;i<ntpServerHost.length;i++){longtime=getTimeFromNtpServer(ntpServerHost[i]);if(time!=-1){emitter.onNext(time);break;}if((i==ntpServerHost.length-1)&&(time...
2、NTP客户端访问NTP服务器 NTP(Network Time Protocol)是用来使计算机时间同步化的一种协议,它可以使计算机对其服务器或时钟源(如石英钟,GPS等等)做同步化,它可以提供高精准度的时间校正(LAN上与标准间差小于1毫秒,WAN上几十毫秒),且可介由加密确认的方式来防止恶毒的协议攻击。
getTimeMillis(); // Get the NTP timestamp, return the system timestamp if synchronization is not completed. NtpTime.INSTANCE.getSafeTimeMillis(); NTP server configuration Generally, NTP Time automatically synchronizes time using the default NTP time servers. The following are the default NTP ...
privatevoidinitProducer(){// 1表示开启断点续传功能,0表示关闭。默认值为0。config.setPersistent(1);// 持久化的文件名,需要保证文件所在的文件夹已创建。finalStringpersistentFilePath=getFilesDir() + File.separator +"log_data"; config.setPersistentFilePath(persistentFilePath);// 持久化文件滚动个数,建...
framework/base/services/java/android/server --NetworkTimeUpdateServiceframework/base/core/java/android/util---NtpTrustedTime framework/base/telephony/java/com/android/internal/telephony/cdmaCdmaServiceStateTracker 其他部分主要分布在vendor/qcom/proprietary/time-services TODO:1.需要更好的理解QMI的机制从而更深...