comlications精萃

http://arstechnica.com/gadgets/2016/05/android-wear-2-0-promises-to-free-your-watch-from-your-phone/

1.An API for complications

Third parties have been able to make Android Wear watch faces for some time now, but the kind of information they can display is heavily dependent on the watch face itself—even with lots of options, it might be hard to find one that looks good and gives you the glance-able information you want.

Wear 2.0 introduces a full-fledged API for complications, those little snippets（片断） of extra information on dumb（无声） watches (or on the Apple Watch, for that matter) that show you things like the current date or moon phases. The Complications API lets app developers pass raw data to watch faces,which can format and style the data however they want to make it look good next to the rest of the watch face.Tapping on individual complications can take you into the full watch app for more information.

These complications should obviate（避免） the need for purpose-built weather or fitness-related watch faces, among others. All we need are apps and watch faces that use the API.

A redone UI

http://www.androidcentral.com/hands-android-wear-20-new-design-watch-face-complications-and-handwriting-input

2、Custom complications

Functionally, the first big change is support for customizable "complications"on watch faces. Developers will soon be able todefine areas in their watch faces where additional information can be displayed, and the user can thenchoose what to put there. The process for choosing which data goes where is up to（取决于） the watch face developer, but in the end it comes down to（归结为） a system dialogue thatlets the user choose from any installed app that is set up to display a complication.

For example, your watch face could have room for two small complications and one large one — the two smaller ones couldshow the time in a different time zone and your step count, while the larger one could show the top item on your to-do list.At this point the choices are going to be limited because there are only a small set of test cases and developers haven't had time to make complications yet, but you can easily see developers building in great extensions（扩展） of their apps to show up as complications on your favorite watch face.

http://www.linuxidc.com/Linux/2016-05/131519.htm

3【中文】

Android Wear 2.0 正式登场！

最后，Google 还介绍了另一个能让第三方应用在表盘上显示自定义内容的 API。要对这项特性加以利用的话，首先你得启用一款支持插件（complications）的表盘。在此基础上，便可以选择要显示的应用插件，而对应的内容范围，则需要应用开发者预先设定好。另外，对表盘设计者来说，只要你的作品支持插件，那任何采用了新 API 的应用就都能实现上述效果了。跟目前版本需要开发者专门去打造对应表盘，才能显示应用插件的做法相比，新 API 的出现无疑减少了很多工作量。而且过去用户是无法在表盘上看到来自不同应用的插件的，现在变成可以自由组合，可玩性显然又高了许多。

顺便说一下其他表盘的说明

关于苹果的

http://cache.baiducontent.com/c?m=9d78d513d99003ed06ba837e7c478a395b0adb326f918b482395870fd33a541b0120a1ac26510d198887263a5df85e5c9db66322704237b7ec99d515c0fec16e7ed23a682759c75c12d11aa8c94238c122935debab1ae5b9f53290afd3c4df231290155a24&p=8b2a970c968c1fb508e2977e0c4a92&newp=9065d316d9c11bfa11bd9b7d0d179e231610db2151dcd101298ffe0cc4241a1a1a3aecbf27281701d8ce776305ac4d58eaf03478350034f1f689df08d2ecce7e75dd6e&user=baidu&fm=sc&query=apple+Complications&qid=9ef16696001a0204&p1=4

下面这个是讲的比较详细的

http://www.macrumors.com/how-to/personalize-apple-watch-face-complications/

Third-Party Complications

Apple has given third-party app developers the ability to add certain features to watch face complications, like flight status, precipitation, and more. 

1. Open the Apple Watch app on your iPhone.
2. Select Complications from the main menu.
3. Available complications will be listed. You can remove complications you do not wish to be shown by tapping the red remove button next to the app. You can also organize the list by touching and holding the three bars on the left side of the app until it hovers. Then, drag it to your preferred position in the list.
4. With the watch face showing on Apple Watch, firmly press the screen to call up the customizations.
5. Select a watch face that allows you to customize the complications and tap Customize.
6. Swipe to the left to edit the complications and tap the module you wish to edit.
7. Rotate the Digital Crown until you get to the third-party complication you wish to add. Then, tap the screen to save the customized watch face.

Head over to the forums to find out which apps support complications in watchOS 2. 

关于传统表盘的

http://www.wixonjewelers.com/education/swiss-watches/complications/