├── .gitignore ├── .idea ├── checkstyle-idea.xml ├── dictionaries │ └── zhangyu.xml ├── gradle.xml ├── misc.xml ├── modules.xml └── runConfigurations.xml ├── LICENSE ├── README.md ├── README_CN.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── android │ │ └── arch │ │ └── convertrxjava │ │ ├── JavaActivity.java │ │ └── MainActivity.kt │ └── res │ ├── drawable-v24 │ └── ic_launcher_foreground.xml │ ├── drawable │ └── ic_launcher_background.xml │ ├── layout │ └── activity_main.xml │ ├── mipmap-anydpi-v26 │ ├── ic_launcher.xml │ └── ic_launcher_round.xml │ ├── mipmap-hdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-mdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ └── values │ ├── colors.xml │ ├── strings.xml │ └── styles.xml ├── build.gradle ├── convert ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── android │ │ └── arch │ │ └── convert │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── android │ │ │ └── arch │ │ │ └── convert │ │ │ ├── LifecycleConvert.kt │ │ │ ├── LifecycleExtend.kt │ │ │ ├── RxJavaConvert.kt │ │ │ ├── RxJavaExtend.kt │ │ │ ├── SingleFilter.kt │ │ │ ├── TakeBetweenObservable.kt │ │ │ └── util.kt │ └── res │ │ └── values │ │ └── strings.xml │ └── test │ └── java │ └── android │ └── arch │ └── convert │ └── ExampleUnitTest.java ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/workspace.xml 5 | /.idea/libraries 6 | .DS_Store 7 | /build 8 | /captures 9 | .externalNativeBuild 10 | -------------------------------------------------------------------------------- /.idea/checkstyle-idea.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/dictionaries/zhangyu.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 19 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 16 | 26 | 27 | 28 | 29 | 30 | 31 | 33 | 34 | 35 | 36 | 37 | 38 | 43 | 44 | 45 | 46 | 47 | 48 | -------------------------------------------------------------------------------- /.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright 2018 Yves Cheung 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # LiveData to RxJava 2 | 3 | --- 4 | 5 | LiveDataToRxJava is a language extension library that provides some API for converting [LiveData][1] to [RxJava][2]. 6 | 7 | [![](https://jitpack.io/v/YvesCheung/LiveDataToRxJava.svg)](https://jitpack.io/#YvesCheung/LiveDataToRxJava) 8 | 9 | [中文版README](README_CN.md) 10 | 11 | # Usage 12 | 13 | ### Convert to Reactive interface 14 | 15 | With the kotlin extension function, you can easily convert ``LiveData`` to ``RxJava``: 16 | 17 | ```Kotlin 18 | val completable = liveData.toCompletable() 19 | val observable = liveData.toObservable() 20 | val flowable = liveData.toFlowable() 21 | val single = liveData.toSingle() 22 | val maybe = liveData.toMaybe() 23 | ``` 24 | 25 | If you are using Java, Api will be slightly longer: 26 | 27 | ```Java 28 | MutableLiveData liveData = new MutableLiveData<>(); 29 | 30 | Completable completable = RxJavaConvert.toCompletable(liveData); 31 | Observable observable = RxJavaConvert.toObservable(liveData); 32 | Flowable flowable = RxJavaConvert.toFlowable(liveData); 33 | Single single = RxJavaConvert.toSingle(liveData); 34 | Maybe maybe = RxJavaConvert.toMaybe(liveData); 35 | ``` 36 | 37 | ### Lifecycle 38 | 39 | ``LiveData`` can specify the period of observation in the lifecycle of a ``LifecycleOwner``. In our applications including Android support-26 library, the commonly used ``Activity`` and ``Fragment`` has implemented the ``LifecycleOwner`` interface, so it can be very convenient to use our data in the lifecycle of UI. 40 | 41 | The following code can be used to convert ``LifecycleOwner`` into a ``Observable``: 42 | 43 | ```Kotlin 44 | //`this` can be an Activity or a Fragment 45 | val observable: Observable = LifecycleConvert.lifecycleObservable(this) 46 | ``` 47 | 48 | More often, you can obtain a observable with lifecycle: 49 | 50 | ```Kotlin 51 | //`this` can be an Activity or a Fragment 52 | val observableWithLife = observable.bindLifecycle(this) 53 | val singleWithLife = single.bindLifecycle(this) 54 | val maybeWithLife = maybe.bindLifecycle(this) 55 | val flowableWithLife = flowable.bindLifecycle(this) 56 | val completableWithLife = completable.bindLifecycle(this) 57 | ``` 58 | 59 | The ``bindLifecycle`` operator allows your observable to have the same lifecycle as ``LiveData.observe (this, {doSomething})`` , that is, from ``onStart`` state to ``onPause`` state. 60 | 61 | > Binding Lifecycle Operators **Not only** Applies to ``Observable`` (or other ``Reactive`` interfaces) converted from ``LiveData``. So you can also use this library for other ``RxJava`` behavior binding lifecycle, such as ``Retrofit`` network requests, which automatically ``dispose`` those requests when ui is no longer active. 62 | 63 | # Other details 64 | 65 | ### Null value 66 | 67 | There is a difference between ``LiveData`` and ``Reactive`` interface. ``LiveData`` can pass null value, but the ``Reactive`` interface can't. So the null value is awkward while converting to ``RxJava``. The ``toObservable`` operator throws an exception when it encounters a null value. Here are a few of my suggestions for this: 68 | 69 | 1. Define a constant or object that represents null, and use it instead. 70 | 2. Use Java8 ``Optional`` to wrap a nullable object. 71 | 3. Use ``toObservableAllowNull`` APIs 72 | 73 | ```Kotlin 74 | val observable = liveData.toObservableAllowNull(valueIfNull) 75 | val single = liveData.toSingleAllowNull(valueIfNull) 76 | val maybe = liveData.toMaybeAllowNull(valueIfNull) 77 | val flowable = liveData.toFlowableAllowNull(valueIfNull) 78 | val completable = liveData.toCompletableAllowNull() 79 | ``` 80 | 81 | ### Non thread safe 82 | 83 | ``LiveData`` is non-thread-safe. The main methods, such as ``observe``, ``observeForever``, ``removeObserver``, ``setValue``, all need to be called on the main thread. This means that it is still necessary to subscribe in the main thread after the conversion into the ``Observable`` (or other ``reactive`` interface). This is regrettable but temporarily unavoidable. 84 | 85 | ### Values emitted out of the lifecycle 86 | 87 | These values will be ignored when ``Flowable`` or ``Observable`` emitts values outside the lifecycle. But for ``Single``, the only poor value, if ignored, is ``Maybe`` : 88 | 89 | ```Kotlin 90 | val maybe = single.bindLifecycle(this) 91 | ``` 92 | 93 | And if you still want to operate on ``Single``, you can do this: 94 | 95 | ```Kotlin 96 | val singleWithLife = single.bindLifecycleWithError(this) 97 | ``` 98 | 99 | A ``CancellationException`` will be thrown when values are emitted outside the lifecycle. ``Completable`` is the same. 100 | 101 | # Download 102 | 103 | Add it in your root build.gradle at the end of repositories: 104 | ```Groovy 105 | allprojects { 106 | repositories { 107 | ... 108 | maven { url 'https://jitpack.io' } 109 | } 110 | } 111 | ``` 112 | 113 | Add the dependency： 114 | ```Groovy 115 | dependencies { 116 | compile 'com.github.YvesCheung:LiveDataToRxJava:v1.1' 117 | } 118 | ``` 119 | 120 | # License 121 | 122 | Copyright 2018 Yves Cheung 123 | 124 | Licensed under the Apache License, Version 2.0 (the "License"); 125 | you may not use this file except in compliance with the License. 126 | You may obtain a copy of the License at 127 | 128 | http://www.apache.org/licenses/LICENSE-2.0 129 | 130 | Unless required by applicable law or agreed to in writing, software 131 | distributed under the License is distributed on an "AS IS" BASIS, 132 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 133 | See the License for the specific language governing permissions and 134 | limitations under the License. 135 | 136 | 137 | 138 | 139 | [1]: https://developer.android.com/topic/libraries/architecture/livedata.html 140 | [2]: https://github.com/ReactiveX/RxJava 141 | -------------------------------------------------------------------------------- /README_CN.md: -------------------------------------------------------------------------------- 1 | # LiveData to RxJava 2 | 3 | --- 4 | 5 | LiveDataToRxJava是一个语言扩展库，提供一些接口可以把[LiveData][1]转换成[RxJava][2]。 6 | 7 | [![](https://jitpack.io/v/YvesCheung/LiveDataToRxJava.svg)](https://jitpack.io/#YvesCheung/LiveDataToRxJava) 8 | 9 | # 使用 10 | 11 | ### 直接转换成Reactive接口 12 | 13 | 通过 kotlin 扩展函数，可以很方便地把 ``LiveData`` 转成 ``RxJava``： 14 | 15 | ```Kotlin 16 | val completable = liveData.toCompletable() 17 | val observable = liveData.toObservable() 18 | val flowable = liveData.toFlowable() 19 | val single = liveData.toSingle() 20 | val maybe = liveData.toMaybe() 21 | ``` 22 | 23 | 如果是使用 Java，Api会略微冗长一点： 24 | 25 | ```Java 26 | MutableLiveData liveData = new MutableLiveData<>(); 27 | 28 | Completable completable = RxJavaConvert.toCompletable(liveData); 29 | Observable observable = RxJavaConvert.toObservable(liveData); 30 | Flowable flowable = RxJavaConvert.toFlowable(liveData); 31 | Single single = RxJavaConvert.toSingle(liveData); 32 | Maybe maybe = RxJavaConvert.toMaybe(liveData); 33 | ``` 34 | 35 | ### 订阅的生命周期 36 | 37 | ``LiveData`` 可以指定观察的期限在某一个 ``LifecycleOwner`` 的生命周期中。在 Android support-26 以上的包里，常用的 ``Activity`` 和 ``Fragment`` 都已经实现了 ``LifecycleOwner`` 这个接口，所以可以很方便地在 ui 有效的生命周期内使用我们的数据。 38 | 39 | 可以通过下面的Api来把 ``LifecycleOwner`` 转换成一个 ``Observable``： 40 | 41 | ```Kotlin 42 | //`this` can be an Activity or a Fragment 43 | val observable: Observable = LifecycleConvert.lifecycleObservable(this) 44 | ``` 45 | 46 | 很多情况下，可以使用下面的Api来让你的可观察对象具有生命周期： 47 | 48 | ```Kotlin 49 | //`this` can be an Activity or a Fragment 50 | val observableWithLife = observable.bindLifecycle(this) 51 | val singleWithLife = single.bindLifecycle(this) 52 | val maybeWithLife = maybe.bindLifecycle(this) 53 | val flowableWithLife = flowable.bindLifecycle(this) 54 | val completableWithLife = completable.bindLifecycle(this) 55 | ``` 56 | 57 | ``bindLifecycle`` 操作符可以让你的可观察对象具有与 ``LiveData.observe(this,{doSomething})`` 相同的生命周期，也就是从 ``onStart`` 状态到 ``onPause`` 状态。 58 | 59 | > 绑定生命周期的操作符 **不仅** 适用于从 ``LiveData`` 转化而来的 ``Observable`` (或其他 ``Reactive`` 接口）。所以你也可以用这个库来为其他 ``RxJava`` 相关的行为绑定生命周期，比如 ``Retrofit`` 的网络请求，当 ui 不再活跃的时候可以自动 ``dispose`` 这个网络请求。 60 | 61 | # 其他细节 62 | 63 | ### 空值 64 | 65 | ``LiveData`` 与 ``Reactive`` 接口有个很大的差异，就是 ``LiveData`` 允许传递null值，而 ``Reactive`` 规范是不可以的。所以在转换到 ``RxJava`` 的过程中null值就会很尴尬。默认的 ``toObservable`` 等接口在遇到null值时会抛出一个异常。下面是几个我对此的建议： 66 | 67 | 1. 定义一个代表null的常量或对象，在需要传递null值的地方使用该常量或对象。 68 | 2. 使用Java8 Optional类包装 69 | 3. 使用 ``toObservableAllowNull`` 系列的Api 70 | 71 | ```Kotlin 72 | val observable = liveData.toObservableAllowNull(valueIfNull) 73 | val single = liveData.toSingleAllowNull(valueIfNull) 74 | val maybe = liveData.toMaybeAllowNull(valueIfNull) 75 | val flowable = liveData.toFlowableAllowNull(valueIfNull) 76 | val completable = liveData.toCompletableAllowNull() 77 | ``` 78 | 79 | ### 非线程安全 80 | 81 | ``LiveData`` 是非线程安全的。``observe`` ， ``observeForever`` ， ``removeObserver`` ， ``setValue`` 等主要方法都需要在主线程上调用。这意味着转换成 ``Observable`` 接口之后还是必须在主线程中订阅。这是令人遗憾但暂时无法避免的。 82 | 83 | ### 生命周期以外的值传递 84 | 85 | 当 ``Flowable`` 或者 ``Observable`` 在生命周期之外期间发射值的时候，这些值会被无视掉。但是对于 ``Single`` 来说，那唯一可怜的值如果被无视掉的话，就相当于是 ``Maybe`` 了： 86 | 87 | ```Kotlin 88 | val maybe = single.bindLifecycle(this) 89 | ``` 90 | 91 | 而如果还是希望绑定生命周期之后仍然是对 ``Single`` 进行操作，可以这样： 92 | 93 | ```Kotlin 94 | val singleWithLife = single.bindLifecycleWithError(this) 95 | ``` 96 | 97 | 在生命周期以外发射值的话，会抛出一个 ``CancellationException`` 。 ``Completable`` 是一样道理的。 98 | 99 | # 配置 100 | 101 | 在项目根目录build.gradle添加： 102 | ```Groovy 103 | allprojects { 104 | repositories { 105 | ... 106 | maven { url 'https://jitpack.io' } 107 | } 108 | } 109 | ``` 110 | 111 | 在需要使用该库的module的build.gradle添加： 112 | ```Groovy 113 | dependencies { 114 | compile 'com.github.YvesCheung:LiveDataToRxJava:v1.1' 115 | } 116 | ``` 117 | 118 | # 许可证 119 | 120 | Copyright 2018 Yves Cheung 121 | 122 | Licensed under the Apache License, Version 2.0 (the "License"); 123 | you may not use this file except in compliance with the License. 124 | You may obtain a copy of the License at 125 | 126 | http://www.apache.org/licenses/LICENSE-2.0 127 | 128 | Unless required by applicable law or agreed to in writing, software 129 | distributed under the License is distributed on an "AS IS" BASIS, 130 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131 | See the License for the specific language governing permissions and 132 | limitations under the License. 133 | 134 | 135 | 136 | 137 | [1]: https://developer.android.com/topic/libraries/architecture/livedata.html 138 | [2]: https://github.com/ReactiveX/RxJava 139 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | apply plugin: 'kotlin-android' 4 | 5 | apply plugin: 'kotlin-android-extensions' 6 | 7 | android { 8 | compileSdkVersion 28 9 | defaultConfig { 10 | applicationId "android.arch.convertrxjava" 11 | minSdkVersion 14 12 | targetSdkVersion 28 13 | versionCode 1 14 | versionName "1.0" 15 | } 16 | buildTypes { 17 | release { 18 | minifyEnabled false 19 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 20 | } 21 | } 22 | } 23 | 24 | dependencies { 25 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 26 | implementation 'androidx.appcompat:appcompat:1.1.0-alpha01' 27 | implementation 'io.reactivex.rxjava2:rxandroid:2.1.0' 28 | implementation 'androidx.lifecycle:lifecycle-extensions:2.1.0-alpha01' 29 | implementation project(':convert') 30 | } 31 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /app/src/main/java/android/arch/convertrxjava/JavaActivity.java: -------------------------------------------------------------------------------- 1 | package android.arch.convertrxjava; 2 | 3 | import android.arch.convert.LifecycleConvert; 4 | import android.arch.convert.RxJavaConvert; 5 | import androidx.lifecycle.MutableLiveData; 6 | import android.os.Bundle; 7 | import androidx.annotation.Nullable; 8 | import androidx.appcompat.app.AppCompatActivity; 9 | 10 | import io.reactivex.Completable; 11 | import io.reactivex.Flowable; 12 | import io.reactivex.Maybe; 13 | import io.reactivex.Observable; 14 | import io.reactivex.Single; 15 | 16 | /** 17 | * Created by 张宇 on 2018/3/14. 18 | * E-mail: zhangyu4@yy.com 19 | * YY: 909017428 20 | */ 21 | 22 | public class JavaActivity extends AppCompatActivity { 23 | 24 | MutableLiveData liveData = new MyLiveData(); 25 | 26 | @Override 27 | protected void onCreate(@Nullable Bundle savedInstanceState) { 28 | super.onCreate(savedInstanceState); 29 | 30 | Completable completable = RxJavaConvert.toCompletable(liveData); 31 | Observable observable = RxJavaConvert.toObservable(liveData); 32 | Flowable flowable = RxJavaConvert.toFlowable(liveData); 33 | Single single = RxJavaConvert.toSingle(liveData); 34 | Maybe maybe = RxJavaConvert.toMaybe(liveData); 35 | 36 | Completable completableWithLife = LifecycleConvert.bindLifecycle(completable, this); 37 | Observable observableWithLife = LifecycleConvert.bindLifecycle(observable, this); 38 | Flowable flowableWithLife = LifecycleConvert.bindLifecycle(flowable, this); 39 | Maybe singleWithLife = LifecycleConvert.bindLifecycle(single, this); 40 | Single singleWithLifeAndError = LifecycleConvert.bindLifecycleWithError(single, this); 41 | Maybe maybeWithLife = LifecycleConvert.bindLifecycle(maybe, this); 42 | } 43 | 44 | @Override 45 | protected void onStart() { 46 | super.onStart(); 47 | liveData.setValue("onStart"); 48 | } 49 | 50 | @Override 51 | protected void onPause() { 52 | liveData.setValue("onPause"); 53 | super.onPause(); 54 | } 55 | 56 | @Override 57 | protected void onDestroy() { 58 | liveData.setValue("onDestroy"); 59 | super.onDestroy(); 60 | } 61 | } 62 | -------------------------------------------------------------------------------- /app/src/main/java/android/arch/convertrxjava/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package android.arch.convertrxjava 2 | 3 | import android.arch.convert.* 4 | import androidx.lifecycle.MutableLiveData 5 | import androidx.lifecycle.Observer 6 | import android.os.Bundle 7 | import androidx.appcompat.app.AppCompatActivity 8 | import android.util.Log 9 | import io.reactivex.functions.Action 10 | import io.reactivex.functions.Consumer 11 | 12 | class MainActivity : AppCompatActivity() { 13 | 14 | private val liveData = MyLiveData() 15 | 16 | init { 17 | val observable = liveData.toObservable().bindLifecycle(this).map { "observable-$it" } 18 | val single = liveData.toSingle().bindLifecycle(this).map { "single-$it" } 19 | val maybe = liveData.toMaybe().bindLifecycle(this).map { "maybe-$it" } 20 | val flowable = liveData.toFlowableAllowNull("null").bindLifecycle(this).map { "flowable-$it" } 21 | val completable = liveData.toCompletable().bindLifecycle(this) 22 | 23 | val onSucess = Consumer { s -> Log.i(TAG, s) } 24 | val onError = Consumer { e -> Log.i(TAG, "$e") } 25 | 26 | liveData.observe(this, Observer { Log.i(TAG, "onChange $it") }) 27 | observable.subscribe(onSucess, onError) 28 | single.subscribe(onSucess, onError) 29 | maybe.subscribe(onSucess, onError) 30 | flowable.subscribe(onSucess, onError) 31 | completable.subscribe(Action { Log.i(TAG, "its complete") }, onError) 32 | LifecycleConvert.lifecycleObservable(this) 33 | .subscribe { 34 | Log.e(TAG, it.toString()) 35 | } 36 | } 37 | 38 | override fun onCreate(savedInstanceState: Bundle?) { 39 | super.onCreate(savedInstanceState) 40 | setContentView(R.layout.activity_main) 41 | } 42 | 43 | override fun onPostCreate(savedInstanceState: Bundle?) { 44 | super.onPostCreate(savedInstanceState) 45 | liveData.value = "onPostCreate" 46 | } 47 | 48 | override fun onStart() { 49 | super.onStart() 50 | liveData.value = "onStart" 51 | } 52 | 53 | override fun onResume() { 54 | super.onResume() 55 | liveData.value = "onResume" 56 | } 57 | 58 | override fun onPause() { 59 | liveData.value = "onPause" 60 | super.onPause() 61 | } 62 | 63 | override fun onStop() { 64 | liveData.value = "onStop" 65 | super.onStop() 66 | } 67 | 68 | override fun onDestroy() { 69 | liveData.value = "onDestroy" 70 | super.onDestroy() 71 | } 72 | } 73 | 74 | class MyLiveData : MutableLiveData() { 75 | 76 | override fun onActive() { 77 | super.onActive() 78 | Log.i(TAG, "onActive") 79 | } 80 | 81 | override fun onInactive() { 82 | super.onInactive() 83 | Log.i(TAG, "onInActive") 84 | } 85 | } 86 | 87 | private const val TAG = "LiveDataToRxJava" 88 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 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/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YvesCheung/LiveDataToRxJava/16b1c44dfb07fd14f7c80c6193e846a1ca1b0d55/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | LiveDataToRxJava 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | ext.kotlin_version = '1.3.11' 5 | repositories { 6 | google() 7 | jcenter() 8 | } 9 | dependencies { 10 | classpath 'com.android.tools.build:gradle:3.3.0' 11 | classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" 12 | classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1' 13 | // NOTE: Do not place your application dependencies here; they belong 14 | // in the individual module build.gradle files 15 | } 16 | } 17 | 18 | allprojects { 19 | repositories { 20 | google() 21 | jcenter() 22 | } 23 | } 24 | 25 | task clean(type: Delete) { 26 | delete rootProject.buildDir 27 | } 28 | -------------------------------------------------------------------------------- /convert/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /convert/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | apply plugin: 'kotlin-android' 3 | // JitPack Maven 4 | apply plugin: 'com.github.dcendents.android-maven' 5 | group='com.github.YvesCheung' 6 | 7 | android { 8 | compileSdkVersion 28 9 | 10 | 11 | 12 | defaultConfig { 13 | minSdkVersion 14 14 | targetSdkVersion 28 15 | versionCode 1 16 | versionName "1.0" 17 | } 18 | 19 | buildTypes { 20 | release { 21 | minifyEnabled false 22 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 23 | } 24 | } 25 | 26 | } 27 | 28 | dependencies { 29 | implementation 'io.reactivex.rxjava2:rxandroid:2.1.0' 30 | implementation 'androidx.lifecycle:lifecycle-livedata:2.1.0-alpha01' 31 | implementation 'androidx.appcompat:appcompat:1.1.0-alpha01' 32 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 33 | } 34 | repositories { 35 | mavenCentral() 36 | } 37 | -------------------------------------------------------------------------------- /convert/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /convert/src/androidTest/java/android/arch/convert/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package android.arch.convert; 2 | 3 | import android.content.Context; 4 | import android.support.test.InstrumentationRegistry; 5 | import android.support.test.runner.AndroidJUnit4; 6 | 7 | import org.junit.Test; 8 | import org.junit.runner.RunWith; 9 | 10 | import static org.junit.Assert.*; 11 | 12 | /** 13 | * Instrumented test, which will execute on an Android device. 14 | * 15 | * @see Testing documentation 16 | */ 17 | @RunWith(AndroidJUnit4.class) 18 | public class ExampleInstrumentedTest { 19 | @Test 20 | public void useAppContext() throws Exception { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("android.arch.convert.test", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /convert/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | -------------------------------------------------------------------------------- /convert/src/main/java/android/arch/convert/LifecycleConvert.kt: -------------------------------------------------------------------------------- 1 | @file:Suppress("unused") 2 | 3 | package android.arch.convert 4 | 5 | import androidx.lifecycle.GenericLifecycleObserver 6 | import androidx.lifecycle.Lifecycle 7 | import androidx.lifecycle.LifecycleOwner 8 | import io.reactivex.* 9 | import io.reactivex.android.MainThreadDisposable 10 | import io.reactivex.functions.Predicate 11 | import org.reactivestreams.Publisher 12 | import java.util.concurrent.CancellationException 13 | 14 | /** 15 | * Created by 张宇 on 2018/3/13. 16 | * E-mail: zhangyu4@yy.com 17 | * YY: 909017428 18 | */ 19 | object LifecycleConvert { 20 | 21 | @JvmStatic 22 | fun bindLifecycle(observer: Observable, owner: LifecycleOwner): Observable = 23 | observer.compose(LifecycleConvert.bind(owner)) 24 | 25 | @JvmStatic 26 | fun bindLifecycle(single: Single, owner: LifecycleOwner): Maybe = 27 | single.toMaybe().compose(LifecycleConvert.bind(owner)) 28 | 29 | @JvmStatic 30 | fun bindLifecycleWithError(single: Single, owner: LifecycleOwner): Single = 31 | single.compose(LifecycleConvert.bind(owner)) 32 | 33 | @JvmStatic 34 | fun bindLifecycle(maybe: Maybe, owner: LifecycleOwner): Maybe = 35 | maybe.compose(LifecycleConvert.bind(owner)) 36 | 37 | @JvmStatic 38 | fun bindLifecycle(flowable: Flowable, owner: LifecycleOwner): Flowable = 39 | flowable.compose(LifecycleConvert.bind(owner)) 40 | 41 | @JvmStatic 42 | fun bindLifecycle(completable: Completable, owner: LifecycleOwner): Completable = 43 | completable.bindLifecycleWithError(owner).onErrorComplete { it is CancellationException } 44 | 45 | @JvmStatic 46 | fun bindLifecycleWithError(completable: Completable, owner: LifecycleOwner): Completable = 47 | completable.compose(LifecycleConvert.bind(owner)) 48 | 49 | @JvmStatic 50 | fun bind(owner: LifecycleOwner): LifecycleTransformer = 51 | LifecycleTransformer(LifecycleObservable(owner)) 52 | 53 | @JvmStatic 54 | fun lifecycleObservable(owner: LifecycleOwner): Observable = 55 | LifecycleObservable(owner) 56 | } 57 | 58 | internal class LifecycleObservable(private val owner: LifecycleOwner) 59 | : Observable() { 60 | 61 | override fun subscribeActual(observer: Observer) { 62 | if (!checkMainThread(observer)) { 63 | return 64 | } 65 | val lifecycle = LifecycleObserver(observer) 66 | observer.onSubscribe(lifecycle) 67 | owner.lifecycle.addObserver(lifecycle) 68 | } 69 | 70 | inner class LifecycleObserver(private val observer: Observer) 71 | : MainThreadDisposable(), GenericLifecycleObserver { 72 | 73 | override fun onStateChanged(source: LifecycleOwner, event: Lifecycle.Event) { 74 | if (!isDisposed) { 75 | observer.onNext(event) 76 | } 77 | } 78 | 79 | override fun onDispose() { 80 | owner.lifecycle.removeObserver(this) 81 | } 82 | } 83 | 84 | fun checkInActiveState() = owner.lifecycle.currentState == Lifecycle.State.DESTROYED 85 | 86 | fun checkInActive(event: Lifecycle.Event) = Lifecycle.Event.ON_STOP == event 87 | 88 | fun shouldBeActive() = owner.lifecycle.currentState.isAtLeast(Lifecycle.State.CREATED) 89 | 90 | fun isAttachedTo(owner: LifecycleOwner) = this.owner === owner 91 | } 92 | 93 | class LifecycleTransformer internal constructor( 94 | private val observable: LifecycleObservable 95 | ) : ObservableTransformer, 96 | FlowableTransformer, 97 | SingleTransformer, 98 | MaybeTransformer, 99 | CompletableTransformer { 100 | 101 | private val inactive = observable.filter { observable.checkInActive(it) } 102 | private val active get() = observable.shouldBeActive() 103 | 104 | override fun apply(upstream: Observable): ObservableSource { 105 | return upstream.filter { active }.takeUntil(inactive) 106 | } 107 | 108 | override fun apply(upstream: Flowable): Publisher { 109 | return upstream.filter { active }.takeUntil(inactive.toFlowable(BackpressureStrategy.LATEST)) 110 | } 111 | 112 | override fun apply(upstream: Single): SingleSource { 113 | return upstream.filterOrNever(Predicate { active }).takeUntil(inactive.firstOrError()) 114 | } 115 | 116 | override fun apply(upstream: Maybe): MaybeSource { 117 | return upstream.filter { active }.takeUntil(inactive.firstElement()) 118 | } 119 | 120 | override fun apply(upstream: Completable): CompletableSource { 121 | val completableAfterActive = upstream.andThen { 122 | if (active) { 123 | it.onComplete() 124 | } else { 125 | it.onError(CancellationException("complete before active")) 126 | } 127 | } 128 | val completableBeforeInactive = inactive.flatMapCompletable { Completable.error(CancellationException()) } 129 | return Completable.ambArray(completableAfterActive, completableBeforeInactive) 130 | } 131 | 132 | override fun equals(other: Any?): Boolean { 133 | if (this === other) { 134 | return true 135 | } 136 | if (other == null || javaClass != other.javaClass) { 137 | return false 138 | } 139 | 140 | val that = other as? LifecycleTransformer<*> 141 | return observable == that?.observable 142 | } 143 | 144 | override fun hashCode(): Int { 145 | return observable.hashCode() 146 | } 147 | 148 | override fun toString(): String { 149 | return "LifecycleTransformer{" + 150 | "observable=" + observable + 151 | '}'.toString() 152 | } 153 | } -------------------------------------------------------------------------------- /convert/src/main/java/android/arch/convert/LifecycleExtend.kt: -------------------------------------------------------------------------------- 1 | @file:Suppress("NOTHING_TO_INLINE", "unused") 2 | 3 | package android.arch.convert 4 | 5 | import androidx.lifecycle.LifecycleOwner 6 | import io.reactivex.* 7 | 8 | /** 9 | * Created by 张宇 on 2018/3/14. 10 | * E-mail: zhangyu4@yy.com 11 | * YY: 909017428 12 | */ 13 | inline fun Observable.bindLifecycle(owner: LifecycleOwner): Observable = 14 | LifecycleConvert.bindLifecycle(this, owner) 15 | 16 | inline fun Single.bindLifecycle(owner: LifecycleOwner): Maybe = 17 | LifecycleConvert.bindLifecycle(this, owner) 18 | 19 | inline fun Single.bindLifecycleWithError(owner: LifecycleOwner): Single = 20 | LifecycleConvert.bindLifecycleWithError(this, owner) 21 | 22 | inline fun Maybe.bindLifecycle(owner: LifecycleOwner): Maybe = 23 | LifecycleConvert.bindLifecycle(this, owner) 24 | 25 | inline fun Flowable.bindLifecycle(owner: LifecycleOwner): Flowable = 26 | LifecycleConvert.bindLifecycle(this, owner) 27 | 28 | inline fun Completable.bindLifecycle(owner: LifecycleOwner): Completable = 29 | LifecycleConvert.bindLifecycle(this, owner) 30 | 31 | inline fun Completable.bindLifecycleWithError(owner: LifecycleOwner): Completable = 32 | LifecycleConvert.bindLifecycleWithError(this, owner) -------------------------------------------------------------------------------- /convert/src/main/java/android/arch/convert/RxJavaConvert.kt: -------------------------------------------------------------------------------- 1 | @file:Suppress("unused") 2 | 3 | package android.arch.convert 4 | 5 | import androidx.lifecycle.LiveData 6 | import androidx.lifecycle.Observer 7 | import io.reactivex.* 8 | import io.reactivex.android.MainThreadDisposable 9 | 10 | /** 11 | * Created by 张宇 on 2018/3/12. 12 | * E-mail: zhangyu4@yy.com 13 | * YY: 909017428 14 | */ 15 | object RxJavaConvert { 16 | 17 | @JvmStatic 18 | fun toObservable(liveData: LiveData): Observable { 19 | return LiveDataObservable(liveData) 20 | } 21 | 22 | @JvmStatic 23 | fun toObservableAllowNull(liveData: LiveData, valueIfNull: T): Observable { 24 | return LiveDataObservable(liveData, valueIfNull) 25 | } 26 | 27 | @JvmStatic 28 | fun toFlowable(liveData: LiveData): Flowable { 29 | return LiveDataObservable(liveData).toFlowable(BackpressureStrategy.LATEST) 30 | } 31 | 32 | @JvmStatic 33 | fun toFlowableAllowNull(liveData: LiveData, valueIfNull: T): Flowable { 34 | return LiveDataObservable(liveData, valueIfNull).toFlowable(BackpressureStrategy.LATEST) 35 | } 36 | 37 | @JvmStatic 38 | fun toSingle(liveData: LiveData): Single { 39 | return LiveDataObservable(liveData).firstOrError() 40 | } 41 | 42 | @JvmStatic 43 | fun toSingleAllowNull(liveData: LiveData, valueIfNull: T): Single { 44 | return LiveDataObservable(liveData, valueIfNull).firstOrError() 45 | } 46 | 47 | @JvmStatic 48 | fun toMaybe(liveData: LiveData): Maybe { 49 | return LiveDataObservable(liveData).firstElement() 50 | } 51 | 52 | @JvmStatic 53 | fun toMaybeAllowNull(liveData: LiveData, valueIfNull: T): Maybe { 54 | return LiveDataObservable(liveData, valueIfNull).firstElement() 55 | } 56 | 57 | @JvmStatic 58 | fun toCompletable(liveData: LiveData): Completable { 59 | return LiveDataCompletable(liveData) 60 | } 61 | 62 | @JvmStatic 63 | fun toCompletableAllowNull(liveData: LiveData): Completable { 64 | return LiveDataCompletable(liveData, true) 65 | } 66 | } 67 | 68 | private class LiveDataObservable( 69 | private val liveData: LiveData, 70 | private val valueIfNull: T? = null 71 | ) : Observable() { 72 | 73 | override fun subscribeActual(observer: io.reactivex.Observer) { 74 | if (!checkMainThread(observer)) { 75 | return 76 | } 77 | val relay = RemoveObserverInMainThread(observer) 78 | observer.onSubscribe(relay) 79 | liveData.observeForever(relay) 80 | } 81 | 82 | private inner class RemoveObserverInMainThread(private val observer: io.reactivex.Observer) 83 | : MainThreadDisposable(), Observer { 84 | 85 | override fun onChanged(t: T?) { 86 | if (!isDisposed) { 87 | if (t == null) { 88 | if (valueIfNull != null) { 89 | observer.onNext(valueIfNull) 90 | } else { 91 | observer.onError(ReactiveStreamNullElementException( 92 | "convert liveData value t to RxJava onNext(t), t cannot be null")) 93 | } 94 | } else { 95 | observer.onNext(t) 96 | } 97 | } 98 | } 99 | 100 | override fun onDispose() { 101 | liveData.removeObserver(this) 102 | } 103 | } 104 | } 105 | 106 | private class LiveDataCompletable( 107 | private val liveData: LiveData, 108 | private val allowNull: Boolean = false) : Completable() { 109 | 110 | override fun subscribeActual(s: CompletableObserver) { 111 | val relay = CompleteObserver(s) 112 | s.onSubscribe(relay) 113 | liveData.observeForever(relay) 114 | } 115 | 116 | private inner class CompleteObserver(val s: CompletableObserver) 117 | : MainThreadDisposable(), Observer { 118 | 119 | override fun onDispose() { 120 | liveData.removeObserver(this) 121 | } 122 | 123 | override fun onChanged(t: T?) { 124 | if (!isDisposed) { 125 | if (t != null || allowNull) { 126 | s.onComplete() 127 | } else { 128 | s.onError(ReactiveStreamNullElementException( 129 | "convert liveData value t to RxJava onNext(t), t cannot be null")) 130 | } 131 | dispose() 132 | } 133 | } 134 | } 135 | } -------------------------------------------------------------------------------- /convert/src/main/java/android/arch/convert/RxJavaExtend.kt: -------------------------------------------------------------------------------- 1 | @file:Suppress("unused") 2 | 3 | package android.arch.convert 4 | 5 | import androidx.lifecycle.LiveData 6 | 7 | /** 8 | * Created by 张宇 on 2018/3/14. 9 | * E-mail: zhangyu4@yy.com 10 | * YY: 909017428 11 | */ 12 | 13 | inline fun LiveData.toObservable() = RxJavaConvert.toObservable(this) 14 | 15 | inline fun LiveData.toObservableAllowNull(valueIfNull: T) = 16 | RxJavaConvert.toObservableAllowNull(this, valueIfNull) 17 | 18 | inline fun LiveData.toFlowable() = RxJavaConvert.toFlowable(this) 19 | 20 | inline fun LiveData.toFlowableAllowNull(valueIfNull: T) = 21 | RxJavaConvert.toFlowableAllowNull(this, valueIfNull) 22 | 23 | inline fun LiveData.toSingle() = RxJavaConvert.toSingle(this) 24 | 25 | inline fun LiveData.toSingleAllowNull(valueIfNull: T) = 26 | RxJavaConvert.toSingleAllowNull(this, valueIfNull) 27 | 28 | inline fun LiveData.toMaybe() = RxJavaConvert.toMaybe(this) 29 | 30 | inline fun LiveData.toMaybeAllowNull(valueIfNull: T) = 31 | RxJavaConvert.toMaybeAllowNull(this, valueIfNull) 32 | 33 | inline fun LiveData.toCompletable() = RxJavaConvert.toCompletable(this) 34 | 35 | inline fun LiveData.toCompletableAllowNull() = RxJavaConvert.toCompletableAllowNull(this) -------------------------------------------------------------------------------- /convert/src/main/java/android/arch/convert/SingleFilter.kt: -------------------------------------------------------------------------------- 1 | package android.arch.convert 2 | 3 | import io.reactivex.Single 4 | import io.reactivex.SingleObserver 5 | import io.reactivex.SingleSource 6 | import io.reactivex.disposables.Disposable 7 | import io.reactivex.exceptions.Exceptions 8 | import io.reactivex.functions.Predicate 9 | import io.reactivex.internal.disposables.DisposableHelper 10 | import io.reactivex.plugins.RxJavaPlugins 11 | 12 | /** 13 | * Created by 张宇 on 2018/3/13. 14 | * E-mail: zhangyu4@yy.com 15 | * YY: 909017428 16 | */ 17 | fun Single.filterOrNever(predicate: Predicate): Single { 18 | return RxJavaPlugins.onAssembly(SingleFilterSingle(this, predicate)) 19 | } 20 | 21 | private class SingleFilterSingle( 22 | private val source: SingleSource, 23 | private val predicate: Predicate 24 | ) : Single() { 25 | 26 | override fun subscribeActual(observer: SingleObserver) { 27 | source.subscribe(FilterSingleObserver(observer, predicate)) 28 | } 29 | 30 | private class FilterSingleObserver( 31 | val actual: SingleObserver, 32 | val predicate: Predicate 33 | ) : SingleObserver, Disposable { 34 | 35 | var d: Disposable? = null 36 | 37 | override fun dispose() { 38 | val d = this.d 39 | this.d = DisposableHelper.DISPOSED 40 | d?.dispose() 41 | } 42 | 43 | override fun isDisposed(): Boolean { 44 | return d?.isDisposed != false 45 | } 46 | 47 | override fun onSubscribe(d: Disposable) { 48 | if (DisposableHelper.validate(this.d, d)) { 49 | this.d = d 50 | actual.onSubscribe(this) 51 | } 52 | } 53 | 54 | override fun onSuccess(value: T) { 55 | val b: Boolean 56 | 57 | try { 58 | b = predicate.test(value) 59 | } catch (ex: Throwable) { 60 | Exceptions.throwIfFatal(ex) 61 | actual.onError(ex) 62 | return 63 | } 64 | 65 | if (b) { 66 | actual.onSuccess(value) 67 | } 68 | //else will be Single.never() 69 | } 70 | 71 | override fun onError(e: Throwable) { 72 | actual.onError(e) 73 | } 74 | } 75 | } -------------------------------------------------------------------------------- /convert/src/main/java/android/arch/convert/TakeBetweenObservable.kt: -------------------------------------------------------------------------------- 1 | package android.arch.convert 2 | 3 | import io.reactivex.Observable 4 | import io.reactivex.ObservableSource 5 | import io.reactivex.Observer 6 | import io.reactivex.disposables.Disposable 7 | import io.reactivex.internal.disposables.ArrayCompositeDisposable 8 | import io.reactivex.internal.disposables.DisposableHelper 9 | import io.reactivex.internal.fuseable.HasUpstreamObservableSource 10 | import io.reactivex.observers.SerializedObserver 11 | import io.reactivex.plugins.RxJavaPlugins 12 | import java.util.concurrent.atomic.AtomicBoolean 13 | 14 | /** 15 | * Created by 张宇 on 2018/3/14. 16 | * E-mail: zhangyu4@yy.com 17 | * YY: 909017428 18 | */ 19 | fun Observable.takeBetween(other: Observable, start: U, end: U): Observable { 20 | return RxJavaPlugins.onAssembly(ObservableTakeBetween(this, other, start, end)) 21 | } 22 | 23 | class ObservableTakeBetween( 24 | private val source: ObservableSource, 25 | private val other: ObservableSource, 26 | private val start: U, 27 | private val end: U 28 | ) : Observable(), HasUpstreamObservableSource { 29 | 30 | override fun source(): ObservableSource = source 31 | 32 | override fun subscribeActual(child: Observer) { 33 | val serial = SerializedObserver(child) 34 | 35 | val frc = ArrayCompositeDisposable(2) 36 | 37 | val tbs = TakeBetweenObserver(serial, frc) 38 | 39 | child.onSubscribe(frc) 40 | 41 | other.subscribe(TakeBetween(frc, serial, start, end)) 42 | 43 | source.subscribe(tbs) 44 | } 45 | 46 | private class TakeBetweenObserver( 47 | val actual: Observer, 48 | val frc: ArrayCompositeDisposable 49 | ) : AtomicBoolean(), Observer { 50 | 51 | lateinit var s: Disposable 52 | 53 | override fun onSubscribe(s: Disposable) { 54 | if (DisposableHelper.validate(this.s, s)) { 55 | this.s = s 56 | frc.setResource(0, s) 57 | } 58 | } 59 | 60 | override fun onNext(t: T) { 61 | actual.onNext(t) 62 | } 63 | 64 | override fun onError(t: Throwable) { 65 | frc.dispose() 66 | actual.onError(t) 67 | } 68 | 69 | override fun onComplete() { 70 | frc.dispose() 71 | actual.onComplete() 72 | } 73 | 74 | companion object { 75 | private const val serialVersionUID = 2345678463753345L 76 | } 77 | } 78 | 79 | private inner class TakeBetween( 80 | val frc: ArrayCompositeDisposable, 81 | val serial: SerializedObserver, 82 | private val start: U, 83 | private val end: U 84 | ) : Observer { 85 | 86 | val isActive = AtomicBoolean(false) 87 | 88 | override fun onSubscribe(s: Disposable) { 89 | frc.setResource(1, s) 90 | } 91 | 92 | override fun onNext(t: U) { 93 | frc.dispose() 94 | serial.onComplete() 95 | } 96 | 97 | override fun onError(t: Throwable) { 98 | frc.dispose() 99 | serial.onError(t) 100 | } 101 | 102 | override fun onComplete() { 103 | frc.dispose() 104 | serial.onComplete() 105 | } 106 | } 107 | } -------------------------------------------------------------------------------- /convert/src/main/java/android/arch/convert/util.kt: -------------------------------------------------------------------------------- 1 | package android.arch.convert 2 | 3 | import android.os.Looper 4 | import io.reactivex.disposables.Disposables 5 | 6 | /** 7 | * Created by 张宇 on 2018/3/13. 8 | * E-mail: zhangyu4@yy.com 9 | * YY: 909017428 10 | */ 11 | internal fun checkMainThread(observer: io.reactivex.Observer<*>): Boolean { 12 | if (Looper.myLooper() != Looper.getMainLooper()) { 13 | observer.onSubscribe(Disposables.empty()) 14 | observer.onError(IllegalStateException( 15 | "Expected to be called on the main thread but was " + Thread.currentThread().name)) 16 | return false 17 | } 18 | return true 19 | } 20 | 21 | class ReactiveStreamNullElementException(detail: String) : NullPointerException(detail) 22 | -------------------------------------------------------------------------------- /convert/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | Convert 3 | 4 | -------------------------------------------------------------------------------- /convert/src/test/java/android/arch/convert/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package android.arch.convert; 2 | 3 | import org.junit.Test; 4 | 5 | import static org.junit.Assert.*; 6 | 7 | /** 8 | * Example local unit test, which will execute on the development machine (host). 9 | * 10 | * @see Testing documentation 11 | */ 12 | public class ExampleUnitTest { 13 | @Test 14 | public void addition_isCorrect() throws Exception { 15 | assertEquals(4, 2 + 2); 16 | } 17 | } -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | 3 | # IDE (e.g. Android Studio) users: 4 | # Gradle settings configured through the IDE *will override* 5 | # any settings specified in this file. 6 | 7 | # For more details on how to configure your build environment visit 8 | # http://www.gradle.org/docs/current/userguide/build_environment.html 9 | 10 | # Specifies the JVM arguments used for the daemon process. 11 | # The setting is particularly useful for tweaking memory settings. 12 | android.enableJetifier=true 13 | android.useAndroidX=true 14 | org.gradle.jvmargs=-Xmx1536m 15 | 16 | # When configured, Gradle will run in incubating parallel mode. 17 | # This option should only be used with decoupled projects. More details, visit 18 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 19 | # org.gradle.parallel=true 20 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/YvesCheung/LiveDataToRxJava/16b1c44dfb07fd14f7c80c6193e846a1ca1b0d55/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Thu Jan 24 10:36:53 CST 2019 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # Attempt to set APP_HOME 46 | # Resolve links: $0 may be a link 47 | PRG="$0" 48 | # Need this for relative symlinks. 49 | while [ -h "$PRG" ] ; do 50 | ls=`ls -ld "$PRG"` 51 | link=`expr "$ls" : '.*-> \(.*\)$'` 52 | if expr "$link" : '/.*' > /dev/null; then 53 | PRG="$link" 54 | else 55 | PRG=`dirname "$PRG"`"/$link" 56 | fi 57 | done 58 | SAVED="`pwd`" 59 | cd "`dirname \"$PRG\"`/" >/dev/null 60 | APP_HOME="`pwd -P`" 61 | cd "$SAVED" >/dev/null 62 | 63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 64 | 65 | # Determine the Java command to use to start the JVM. 66 | if [ -n "$JAVA_HOME" ] ; then 67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 68 | # IBM's JDK on AIX uses strange locations for the executables 69 | JAVACMD="$JAVA_HOME/jre/sh/java" 70 | else 71 | JAVACMD="$JAVA_HOME/bin/java" 72 | fi 73 | if [ ! -x "$JAVACMD" ] ; then 74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 75 | 76 | Please set the JAVA_HOME variable in your environment to match the 77 | location of your Java installation." 78 | fi 79 | else 80 | JAVACMD="java" 81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 82 | 83 | Please set the JAVA_HOME variable in your environment to match the 84 | location of your Java installation." 85 | fi 86 | 87 | # Increase the maximum file descriptors if we can. 88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 89 | MAX_FD_LIMIT=`ulimit -H -n` 90 | if [ $? -eq 0 ] ; then 91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 92 | MAX_FD="$MAX_FD_LIMIT" 93 | fi 94 | ulimit -n $MAX_FD 95 | if [ $? -ne 0 ] ; then 96 | warn "Could not set maximum file descriptor limit: $MAX_FD" 97 | fi 98 | else 99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 100 | fi 101 | fi 102 | 103 | # For Darwin, add options to specify how the application appears in the dock 104 | if $darwin; then 105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 106 | fi 107 | 108 | # For Cygwin, switch paths to Windows format before running java 109 | if $cygwin ; then 110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 112 | JAVACMD=`cygpath --unix "$JAVACMD"` 113 | 114 | # We build the pattern for arguments to be converted via cygpath 115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 116 | SEP="" 117 | for dir in $ROOTDIRSRAW ; do 118 | ROOTDIRS="$ROOTDIRS$SEP$dir" 119 | SEP="|" 120 | done 121 | OURCYGPATTERN="(^($ROOTDIRS))" 122 | # Add a user-defined pattern to the cygpath arguments 123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 125 | fi 126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 127 | i=0 128 | for arg in "$@" ; do 129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 131 | 132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 134 | else 135 | eval `echo args$i`="\"$arg\"" 136 | fi 137 | i=$((i+1)) 138 | done 139 | case $i in 140 | (0) set -- ;; 141 | (1) set -- "$args0" ;; 142 | (2) set -- "$args0" "$args1" ;; 143 | (3) set -- "$args0" "$args1" "$args2" ;; 144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 150 | esac 151 | fi 152 | 153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 154 | function splitJvmOpts() { 155 | JVM_OPTS=("$@") 156 | } 157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 159 | 160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 161 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app', ':convert' 2 | --------------------------------------------------------------------------------