Dependencies and prerequisites 依賴和先決條件
This class is not specific to any particular version of the Android platform. It is also primarily design-focused and does not require knowledge of the Android SDK. That said, you should have experience using an Android device for a better understanding of the context in which Android applications run.
這個課程不是特定於任何特定版本的Android平臺。 它也主要以設計為中心，不需要了解Android SDK。 也就是說，您應該有使用Android設備的經驗，以便更好地了解Android應用程序運行的上下文。
You should also have basic familiarity with the Action Bar (pattern docs at Android Design), used across most applications in devices running Android 3.0 and later.
您還應該熟悉Action Bar（Android設計中的pattern docs），用於運行Android 3.0及更高版本的設備中的大多數應用程序。
One of the very first steps to designing and developing an Android application is to determine what users are able to see and do with the app. Once you know what kinds of data users are interacting with in the app, the next step is to design the interactions that allow users to navigate across, into, and back out from the different pieces of content within the app.
設計和開發Android應用程序的第一步之一是確定用戶可以看到和使用該應用程序。 一旦您知道用戶在應用程序中進行什麽樣的數據交互，下一步就是設計互動，讓用戶在應用程序內的不同內容中進行瀏覽，退出和退出。
This class shows you how to plan out the high-level screen hierarchy for your application and then choose appropriate forms of navigation to allow users to effectively and intuitively traverse your content. Each lesson covers various stages in the interaction design process for navigation in Android applications, in roughly chronological order. After going through the lessons in this class, you should be able to apply the methodology and navigation paradigms outlined here to your own applications, providing a coherent navigation experience for your users.
該課程向您展示如何計劃應用程序的高級屏幕層次結構，然後選擇適當的導航形式，以便用戶有效和直觀地遍歷您的內容。 每個課程涵蓋Android應用程序中導航的交互設計過程的各個階段，大致按時間順序排列。 在通過課堂上的課程後，您應該能夠將本文概述的方法和導航範例應用於您自己的應用程序，為用戶提供一致的導航體驗。
Dependencies and prerequisites 依賴和先決條件