《RxJava回響式編程》是2018年3月電子工業出版社出版的圖書，作者是李衍順。
基本介紹
- 中文名：RxJava回響式編程
- 作者：李衍順
- ISBN：9787121336409
- 頁數：228頁
- 定價：49元
- 出版社：電子工業出版社
- 出版時間：2018年3月
- 開本：16開
內容簡介,圖書目錄,
內容簡介
回響式編程是一種基於異步數據流概念的編程模式，在開發手機App、Web App時，要想保證對用戶請求的實時回響，給用戶帶來流暢的體驗，回響式編程是一個不錯的選擇。RxJava則是這種編程模式的Java實現。本書主要介紹如何使用RxJava進行回響式編程。全書一共6章，從回響式編程與RxJava的概念，到RxJava的操作符和源碼，以及各種Scheduler的特點和適用場景，均做了較細緻的講解。本書還用一章的篇幅給出了幾個RxJava的實用案例，幫助讀者理解概念，上手操作。本書適合RxJava的初學者，以及對RxJava有初步了解想要進一步深入學習的讀者閱讀。
圖書目錄
第1章 走進RxJava的世界 .......................................................................................................... 1
1.1 回響式編程.......................................................................................................................... 1
1.2 什麼是RxJava................................................................................................................ 4
1.3 Observable和Subscriber ............................................................................................... 5
1.3.1 Single：單個數據的生產者 ........................................................................................... 8
1.3.2 Completable：單個事件的生產者 .................................................................................. 9
1.4 在Android工程中引入RxJava .................................................................................. 11
第2章 RxJava中的操作符 ..................................................................................................... 12
2.1 創建Observable的操作符 .......................................................................................... 12
2.1.1 range ........................................................................................................................... 13
2.1.2 defer和just ................................................................................................................. 13
2.1.3 from ............................................................................................................................ 16
2.1.4 interval ........................................................................................................................ 17
2.1.5 repeat和timer ............................................................................................................. 19
2.2 轉化Observable的操作符 .......................................................................................... 21
2.2.1 buffer .......................................................................................................................... 21
2.2.2 flatMap ....................................................................................................................... 23
2.2.3 groupBy ...................................................................................................................... 25
2.2.4 map............................................................................................................................ 28
2.2.5 cast ............................................................................................................................. 29
2.2.6 scan ............................................................................................................................ 31
2.2.7 window ....................................................................................................................... 32
2.3 過濾操作符 .................................................................................................................. 35
2.3.1 debounce ..................................................................................................................... 35
2.3.2 distinct ........................................................................................................................ 39
2.3.3 elementAt .................................................................................................................... 40
2.3.4 filter ............................................................................................................................ 41
2.3.5 first和last ................................................................................................................... 43
2.3.6 skip和take，skipLast和takeLast ................................................................................ 45
2.3.7 sample和throttleFirst .................................................................................................. 46
2.4 組合操作符 .................................................................................................................. 48
2.4.1 combineLatest .............................................................................................................. 48
2.4.2 join和groupJoin ......................................................................................................... 51
2.4.3 merge和mergeDelayError............................................................................................ 55
2.4.4 startWith...................................................................................................................... 58
2.4.5 switch ......................................................................................................................... 59
2.4.6 zip和zipWith .............................................................................................................. 61
2.5 錯誤處理操作符 .......................................................................................................... 64
2.5.1 onErrorReturn .............................................................................................................. 64
2.5.2 onErrorResumeNext ..................................................................................................... 66
2.5.3 onExceptionResumeNext .............................................................................................. 67
2.5.4 retry ............................................................................................................................ 70
2.6 輔助操作符 .................................................................................................................. 72
2.6.1 delay ........................................................................................................................... 72
2.6.2 do ............................................................................................................................... 74
2.6.3 materialize和dematerialize .......................................................................................... 78
2.6.4 subscribeOn和observeOn ............................................................................................ 80
2.6.5 timeInterval和timeStamp ............................................................................................ 82
2.6.6 timeout ........................................................................................................................ 84
2.6.7 using ........................................................................................................................... 87
2.7 條件操作 ...................................................................................................................... 90
2.7.1 all ............................................................................................................................... 90
2.7.2 amb............................................................................................................................ 92
2.7.3 contains ....................................................................................................................... 93
2.7.4 isEmpty ....................................................................................................................... 94
2.7.5 defaultIfEmpty ............................................................................................................. 95
2.7.6 sequenceEqual ............................................................................................................. 97
2.7.7 skipUntil和skipWhile ................................................................................................. 98
2.7.8 takeUntil和takeWhile ............................................................................................... 100
2.8 聚合操作符 ................................................................................................................ 102
2.8.1 concat ....................................................................................................................... 102
2.8.2 count ......................................................................................................................... 104
2.8.3 reduce ....................................................................................................................... 105
2.8.4 collect ....................................................................................................................... 106
2.9 與Connectable Observable相關的操作符 ............................................................... 107
2.9.1 publish和connect ...................................................................................................... 108
2.9.2 refCount .................................................................................................................... 110
2.9.3 replay ........................................................................................................................ 111
2.10 自定義操作符 .......................................................................................................... 114
2.10.1 lift ........................................................................................................................... 115
2.10.2 compose .................................................................................................................. 117
第3章 使用Scheduler進行執行緒調度 ................................................................................. 119
3.1 什麼是Scheduler ....................................................................................................... 119
3.2 Scheduler的類型 ....................................................................................................... 121
3.2.1 computation ............................................................................................................... 121
3.2.2 newThread ................................................................................................................. 122
3.2.3 io .............................................................................................................................. 122
3.2.4 immediate .................................................................................................................. 123
3.2.5 trampoline ................................................................................................................. 123
3.2.6 from .......................................................................................................................... 123
3.3 總結 ............................................................................................................................ 125
第4章 RxJava的實現原理 ................................................................................................... 126
4.1 數據的傳送和接收 .................................................................................................... 126
4.1.1 創建Observable的過程 ............................................................................................. 127
4.1.2 訂閱的過程 ............................................................................................................... 128
4.2 操作符的實現 ............................................................................................................ 130
4.2.1 lift的工作原理 .......................................................................................................... 130
4.2.2 map的工作原理 ........................................................................................................ 132
4.2.3 flatMap的工作原理 ................................................................................................... 135
4.2.4 merge的工作原理 ..................................................................................................... 136
4.2.5 concat的工作原理 ..................................................................................................... 139
4.3 Scheduler的工作原理 ............................................................................................... 144
4.3.1 Scheduler源碼 .......................................................................................................... 144
4.3.2 subscribeOn的工作原理 ............................................................................................ 152
4.3.3 observeOn的工作原理 .............................................................................................. 156
第5章 RxJava的套用實例 ................................................................................................... 161
5.1 計算π的值 ................................................................................................................ 161
5.2 圖片的三級快取 ........................................................................................................ 165
5.2.1 記憶體快取 .................................................................................................................. 167
5.2.2 外存快取 .................................................................................................................. 169
5.2.3 網路快取 .................................................................................................................. 172
5.2.4 快取管理 .................................................................................................................. 173
5.2.5 封裝.......................................................................................................................... 176
5.2.6 運行測試 .................................................................................................................. 178
5.3 結合Retrofit和OkHttp訪問網路 ............................................................................ 181
5.3.1 卡片類的定義 ........................................................................................................... 181
5.3.2 配置OkHttp .............................................................................................................. 183
5.3.3 配置Retrofit.............................................................................................................. 186
5.4 使用RxLifecycle避免記憶體泄漏 ............................................................................... 189
5.4.1 修改demo工程 .................................................................................................... 189
5.4.2 綁定其他生命周期 ................................................................................................ 191
5.5 使用RxBinding綁定各種View事件....................................................................... 193
5.5.1 綁定點擊事件 ...................................................................................................... 194
5.5.2 綁定TextWatcher .................................................................................................. 196
5.5.3 綁定OnPageChangeListener ................................................................................... 197
第6章 RxJava 2的改進 ....................................................................................................... 200
6.1 Observable和Flowable ............................................................................................. 200
6.2 null的使用 ................................................................................................................. 203
6.3 Single和Completable ................................................................................................ 205
6.4 Maybe ......................................................................................................................... 207
6.5 Subscriber ................................................................................................................... 208
6.5.1 DefaultSubscriber .................................................................................................. 209
6.5.2 ResourceSubscriber ................................................................................................ 210
6.5.3 DisposableSubscriber ............................................................................................. 211
6.6 Action和Function ..................................................................................................... 212
6.7 錯誤處理 .................................................................................................................... 214
6.8 Scheduler .................................................................................................................... 216
