11.1 WebView
11.2 Use HTTP to Access Network
11.2.1 Use HttpURLConnection
11.2.2 Use OkHttp
11.3 Parse XML Data
11.3.1 Pull Parser
11.3.2 SAX Parser
11.4 Parse JSON Data
11.4.1 JSONObject
11.4.2 GSON
11.5 Implementing Network Callback
11.6 The Best Network Lib: Retrofit
11.6.1 Basic Use of Retrofit
11.6.2 Process Complex Interface Address
11.6.3 Best Practice for Retrofit Builder
11.7 Kotlin Class: Use Coroutine for Performant Concurrent App
11.7.1 Basic Use of Coroutine
11.7.2 More on Coroutine Scope Builder
11.7.3 Simplifying Callback with Coroutine
11.8 Summary and Comment