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truetime-android

授权协议 Apache-2.0 License
开发语言 Java
所属分类 手机/移动开发
软件类型 开源软件
地区 不详
投 递 者 曾永新
操作系统 跨平台
开源组织
适用人群 未知
 软件概览

TrueTime for Android

Make sure to check out our counterpart too: TrueTime, an NTP library for Swift.

NTP client for Android. Calculate the date and time "now" impervious to manual changes to device clock time.

In certain applications it becomes important to get the real or "true" date and time. On most devices, if the clock has been changed manually, then a new Date() instance gives you a time impacted by local settings.

Users may do this for a variety of reasons, like being in different timezones, trying to be punctual by setting their clocks 5 – 10 minutes early, etc. Your application or service may want a date that is unaffected by these changes and reliable as a source of truth. TrueTime gives you that.

You can read more about the use case in our blog post.

In a recent conference talk, we explained how the full NTP implementation works with Rx. Check the video and slides out for implementation details.

Also, once we have this information it's valid until the next time you boot your device. This means if you enable the disk caching feature, after a single successful NTP request you can use the information on disk directly without ever making another network request. This applies even across application kills which can happen frequently if your users have a memory starved device.

Installation

See the wiki instructions.

Wiki has a lot of useful information

Take a look at the wiki sidebar which should have a lot of useful information.

Is this library still maintained?

The short answer is yes. We're planning a complete rewrite of TrueTime (Version 4). See this branch. We juggle our personal time between doing this rewrite and using TrueTime in its current version. TrueTime is still used in its current form at Instacart by many many users.

As is the case with most open source libraries, maintenance is hard. We've not done a great job at answering the various issues, but we want to do better. We can only ask that you trust that the rewrite is coming and it should make things better. We don't want to spend too much time making changes to the library in its existing state, because the rewrite is the better future for TrueTime.

License

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
  • java.lang.Object    ↳android.text.format.Time   Class Overview(概述) The Time class is a faster replacement for the java.util.Calendar and java.util.GregorianCalendar classes. An instance of the Time cl

  • public class TimeUtils { public static String secondToTime(long second) { long hours = second / 3600;//转换小时数 second = second % 3600;//剩余秒数 long minutes = second / 60;//转换分

  • 1.计时器Timer基本用法,完成倒计时 public class TimeActivity extends AppCompatActivity { private Timer timer; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(saved

  • 背景 上周基于LruCache实现了一个缓存,实现逻辑大概如下: //使用剩余内存的1/16作为缓存池的最大值 int size = Runtime.getRuntime().freeMemory() / 16; LruCache<String, String> myCache = new LruCache<String, String>(cacheSize) { protect

  • 最近在开发的过程中使用到了TimePicker,需求是可选择24小时制的时间日期,然后发现设置setIs24HourView(true)之后,再使用TimePicker的getCurrentHour得到的却是12小时制,也就是下午的时间,比如14点会显示为2点,那到底是什么原因呢? 小编在实现的过程中代码如下: /** * 日期选择器弹窗 * @param activity

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  • 120秒转成:02:00 int time = Constants.box_time; SimpleDateFormat format = new SimpleDateFormat("mm:ss"); String format1 = format.format(new D

  •     private void stopTime() { LogUtils.e("stopTime"); if (timer != null) { timer.cancel(); timer = null; } if (task != null) { task

  • Timer 跟线程的安全有关,所以我们要用Handler来处理: 代码如下:(此Demo主要是演示camera的self Timer 的功能) package com.example.mytimer; import java.util.Timer; import java.util.TimerTask; import android.app.Activity; import android.os.

  • 方法一:message+handler package com.time; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.View; import android.widget

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