├── .gitignore ├── .idea ├── caches │ └── build_file_checksums.ser ├── codeStyles │ └── Project.xml ├── gradle.xml ├── kotlinc.xml ├── misc.xml ├── modules.xml ├── runConfigurations.xml └── vcs.xml ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── sample │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── sample │ │ │ ├── LocationRetriever.java │ │ │ ├── MVVMViewModel.java │ │ │ ├── MainActivity.java │ │ │ ├── MainModel.java │ │ │ ├── MainPresenter.java │ │ │ ├── MainPresenterImplementer.java │ │ │ ├── MainView.java │ │ │ ├── ReactiveActivity.java │ │ │ └── SampleActivity.java │ └── 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 │ └── test │ └── java │ └── com │ └── sample │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── lite-cycle ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── android │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── android │ │ │ ├── InstantLiteObserver.java │ │ │ ├── LazyLiteObserver.java │ │ │ ├── LiteCycle.java │ │ │ ├── LiteObserver.java │ │ │ ├── LiteObserverBuilder.java │ │ │ └── LiteObserverFactory.java │ └── res │ │ └── values │ │ └── strings.xml │ └── test │ └── java │ └── com │ └── android │ ├── LiteCycleTest.java │ └── MockLifeCycleOwner.java └── 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/caches/build_file_checksums.ser: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Ahmed-Adel-Ismail/LiteCycle/6ae1bf33f6dcbaa6ac2ce00b9e8ec768b07704fb/.idea/caches/build_file_checksums.ser -------------------------------------------------------------------------------- /.idea/codeStyles/Project.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 15 | 16 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 18 | 19 | -------------------------------------------------------------------------------- /.idea/kotlinc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 6 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 19 | 31 | 32 | 33 | 34 | 35 | 36 | 38 | -------------------------------------------------------------------------------- /.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /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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40 | 41 | LiteCycle.defer(() -> getIntent().getBooleanExtra("EXTRA", false)) 42 | .forLifeCycle(this) // pass Activity or Fragment 43 | .onCreateInvoke(extra -> Log.e("LiteCycle", "extra boolean : " + extra)) 44 | .observe(); 45 | ``` 46 | # How things work 47 | 48 | You can initialize a value that changes based on the Life cycle events by one of two ways : 49 | 50 | - Instant initialization : 51 | LiteCycle.with(10) 52 | - Lazy initialization : 53 | LiteCycle.defer(() -> getIntent().getBooleanExtra("EXTRA", false)) 54 | 55 | for Lazy initialization, you pass a Callable that will be invoked the first time any operation tries to access / update the value 56 | 57 | After initializing a LiteCycle with a value stored in it, you can use or update the value based on the life-cycle events through the available methods, for example 58 | ```Java 59 | LiteCycle.with(10) 60 | .forLifeCycle(this) // pass Activity or Fragment 61 | .onCreateUpdate(i -> i + 1) 62 | ``` 63 | this will update the stored value by adding one to it, in the onCreate() Event ... you can invoke the life-cycle event related methods multiple times, and the passed functions will be executed in the same order, like for example : 64 | ```Java 65 | .onCreateInvoke(i -> Log.e("LiteCycle", "initial value " + i)) 66 | .onCreateUpdate(i -> i + 1) 67 | .onCreateInvoke(i -> Log.e("LiteCycle", "onCreate() invoked " + i)) 68 | ``` 69 | The above 3 lines will be executed in the same order when onCreate() event happens 70 | 71 | Also there are 2 types of actions, update and invoke, like 72 | ```java 73 | .onResumeUpdate(i -> i + 1) 74 | .onResumeInvoke(i -> Log.e("LiteCycle", "onResume() invoked " + i)) 75 | ``` 76 | The update operation takes the result of the passed function and updates the stored value in the LiteCycle, while the invoke operation just uses the value stored, but it does not change it 77 | 78 | at the end you need to invoke 79 | ```java 80 | .observe(); 81 | ``` 82 | for all things to take effect 83 | 84 | # Handling Rotation 85 | 86 | There are functions like 87 | ```java 88 | .onFinishingUpdate(i -> null) 89 | .onFinishingInvoke(i -> Log.e("LiteCycle", "isFinishing() invoked " + i)) 90 | ``` 91 | Those functions will not invoke while rotation, they will be invoked after onDestroy() in case of non-rotation events, where the Life-Cycle-Owner is about to be totally destroyed 92 | 93 | # Listen on value updates 94 | 95 | Since version 1.2.1, the observe() method returns an Rx Java 2 Observable so you can subscribe to it and get notified when ever the value is changed, so in our sample example, we can write it this way 96 | ```java 97 | Observable integer = LiteCycle.with(10) 98 | .forLifeCycle(this) 99 | .onCreateUpdate(i -> i + 1) 100 | .onStartUpdate(i -> i + 1) 101 | .onResumeUpdate(i -> i + 1) 102 | .onPauseUpdate(i -> i + 1) 103 | .onStopUpdate(i -> i + 1) 104 | .onDestroyUpdate(i -> 10) 105 | .observe(BehaviorSubject.create()); 106 | 107 | Disposable disposable = integer.subscribe(i -> Log.e("LiteCycle", "integer value " + i)); 108 | ``` 109 | The Observable created by observe(Subject) method is a BehaviorSubject, if you want a different type, you can pass any RxJava Subject sub-class, as follows : 110 | ```java 111 | Observable integer = LiteCycle.with(10) 112 | .forLifeCycle(this) 113 | .onResumeUpdate(i -> i + 1) 114 | .onPauseUpdate(i -> i + 1) 115 | .observe(PublishSubject.create()); 116 | ``` 117 | you do not need to care about Observable created from the observe(Subject) call, since it completes itself when the Life-Cycle Owner (Activity or Fragment) calls it's onDestroy(), so you can safely write the previous code as follows : 118 | ```java 119 | LiteCycle.with(10) 120 | .forLifeCycle(this) 121 | .onResumeUpdate(i -> i + 1) 122 | .onPauseUpdate(i -> i + 1) 123 | .observe(PublishSubject.create()) 124 | .map(i -> "integer value " + i) 125 | .subscribe(text -> Log.e("LiteCycle", text)) 126 | ``` 127 | This practice is perfect when declaring RxJava2 Disposables, since you can guarantee that they are disposed when onDestroy() is called 128 | ```Java 129 | LiteCycle.with(interval()) 130 | .forLifeCycle(this) 131 | .onDestroyInvoke(Disposable::dispose) 132 | .observe(); 133 | 134 | Disposable interval(){ 135 | return Observable.interval(2, TimeUnit.SECONDS) 136 | .subscribe(this::doSomething); 137 | } 138 | ``` 139 | Notice that if the value is set to null, the Observable wont be notified since RxJava 2 does not support null values 140 | 141 | # Gradle dependency 142 | 143 | Step 1. Add the JitPack repository to your build file 144 | Add it in your root build.gradle at the end of repositories: 145 | ```Gradle 146 | allprojects { 147 | repositories { 148 | ... 149 | maven { url 'https://jitpack.io' } 150 | } 151 | } 152 | ``` 153 | Step 2. Add the dependency 154 | ```Gradle 155 | dependencies { 156 | 157 | // for Java 158 | implementation 'com.github.Ahmed-Adel-Ismail:LiteCycle:1.2.1' 159 | 160 | // for kotlin 161 | implementation 'com.github.Ahmed-Adel-Ismail.LiteCycle:kotlin:1.3.0' // notice version difference 162 | } 163 | ``` 164 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 26 5 | defaultConfig { 6 | applicationId "com.sample" 7 | minSdkVersion 19 8 | targetSdkVersion 26 9 | versionCode 1 10 | versionName "1.0" 11 | multiDexEnabled true 12 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 13 | } 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | 21 | compileOptions { 22 | sourceCompatibility = "1.8" 23 | targetCompatibility = "1.8" 24 | } 25 | } 26 | 27 | dependencies { 28 | implementation fileTree(include: ['*.jar'], dir: 'libs') 29 | implementation 'com.android.support:appcompat-v7:26.1.0' 30 | implementation 'com.android.support.constraint:constraint-layout:1.0.2' 31 | testImplementation 'junit:junit:4.12' 32 | androidTestImplementation 'com.android.support.test:runner:1.0.1' 33 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1' 34 | implementation "android.arch.lifecycle:extensions:1.1.0" 35 | annotationProcessor "android.arch.lifecycle:compiler:1.1.0" 36 | implementation 'com.github.Ahmed-Adel-Ismail:J-Chain:0.1.2' 37 | // implementation 'com.github.Ahmed-Adel-Ismail:LiteCycle:1.2.1' 38 | implementation project(':lite-cycle') 39 | } 40 | -------------------------------------------------------------------------------- /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/androidTest/java/com/sample/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.sample; 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("com.sample", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /app/src/main/java/com/sample/LocationRetriever.java: -------------------------------------------------------------------------------- 1 | package com.sample; 2 | 3 | import android.location.Location; 4 | import android.util.Log; 5 | 6 | public abstract class LocationRetriever { 7 | 8 | 9 | public void start() { 10 | // start listening to location changes 11 | Log.e("LocationRetriever","start() invoked"); 12 | } 13 | 14 | 15 | public void stop() { 16 | // stop listening to location changes 17 | Log.e("LocationRetriever","stop() invoked"); 18 | } 19 | 20 | void changeLocation(){ 21 | onLocationChanged(null); 22 | } 23 | 24 | public abstract void onLocationChanged(Location location); 25 | 26 | 27 | } 28 | -------------------------------------------------------------------------------- /app/src/main/java/com/sample/MVVMViewModel.java: -------------------------------------------------------------------------------- 1 | package com.sample; 2 | 3 | import android.arch.lifecycle.LifecycleOwner; 4 | import android.arch.lifecycle.ViewModel; 5 | 6 | import com.android.LiteCycle; 7 | 8 | import io.reactivex.Observable; 9 | import io.reactivex.subjects.BehaviorSubject; 10 | 11 | /** 12 | * Created by Ahmed Adel Ismail on 2/4/2018. 13 | */ 14 | 15 | public class MVVMViewModel extends ViewModel { 16 | 17 | private Observable methodIndexer; 18 | 19 | public void initialize(LifecycleOwner lifecycleOwner) { 20 | methodIndexer = createMethodIndexer(lifecycleOwner); 21 | } 22 | 23 | private Observable createMethodIndexer(LifecycleOwner lifecycleOwner) { 24 | return LiteCycle.with(0) 25 | .forLifeCycle(lifecycleOwner) 26 | .onCreateUpdate(i -> 1) 27 | .onStartUpdate(i -> 2) 28 | .onResumeUpdate(i -> 3) 29 | .onPauseUpdate(i -> 4) 30 | .onStopUpdate(i -> 5) 31 | .onDestroyUpdate(i -> 6) 32 | .observe(BehaviorSubject.create()); 33 | } 34 | 35 | public Observable getMethodIndexer() { 36 | return methodIndexer; 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /app/src/main/java/com/sample/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.sample; 2 | 3 | import android.annotation.SuppressLint; 4 | import android.location.Location; 5 | import android.os.Bundle; 6 | import android.support.annotation.NonNull; 7 | import android.support.annotation.Nullable; 8 | import android.support.v7.app.AppCompatActivity; 9 | import android.util.Log; 10 | 11 | import com.android.LiteCycle; 12 | 13 | import java.util.concurrent.TimeUnit; 14 | 15 | import io.reactivex.Observable; 16 | import io.reactivex.disposables.Disposable; 17 | import io.reactivex.subjects.PublishSubject; 18 | 19 | public class MainActivity extends AppCompatActivity implements MainView { 20 | 21 | private MainPresenter presenter; 22 | 23 | 24 | @Override 25 | protected void onCreate(@Nullable Bundle savedInstanceState) { 26 | super.onCreate(savedInstanceState); 27 | setContentView(R.layout.activity_main); 28 | presenter = new MainPresenterImplementer(this); 29 | 30 | LiteCycle.with(0) 31 | .forLifeCycle(this) 32 | .onCreateUpdate(i -> 1) 33 | .onStartUpdate(i -> 2) 34 | .onResumeUpdate(i -> 3) 35 | .onPauseUpdate(i -> 4) 36 | .onStopUpdate(i -> 5) 37 | .onDestroyUpdate(i -> 6) 38 | .observe(PublishSubject.create()) 39 | .subscribe(i -> Log.e("MainActivity", "non-null value updated : " + i)); 40 | 41 | LiteCycle.with(null) 42 | .forLifeCycle(this) 43 | .onCreateUpdate(i -> 1) 44 | .onStartUpdate(i -> 2) 45 | .onResumeUpdate(i -> 3) 46 | .onPauseUpdate(i -> 4) 47 | .onStopUpdate(i -> 5) 48 | .onDestroyUpdate(i -> 6) 49 | .observe(PublishSubject.create()) 50 | .subscribe(i -> Log.e("MainActivity", "null value updated : " + i)); 51 | 52 | 53 | LiteCycle.defer(this::lazyInitialization) 54 | .forLifeCycle(this) 55 | .onResumeUpdate(i -> 3) 56 | .onPauseUpdate(i -> 4) 57 | .observe(PublishSubject.create()) 58 | .subscribe(i -> Log.e("MainActivity", "lazy value updated : " + i)); 59 | 60 | LiteCycle.defer(null) 61 | .forLifeCycle(this) 62 | .onResumeUpdate(i -> 3) 63 | .onPauseUpdate(i -> 4) 64 | .observe(PublishSubject.create()) 65 | .subscribe(i -> Log.e("MainActivity", "defer(null) value updated : " + i)); 66 | 67 | 68 | LiteCycle.with(0) 69 | .forLifeCycle(this) 70 | .onResumeUpdate(i -> 30) 71 | .onPauseUpdate(i -> 40) 72 | .observe(PublishSubject.create()) 73 | .subscribe(i -> Log.e("MainActivity", "PublishSubject value updated : " + i)); 74 | 75 | 76 | LiteCycle.with(intervalDisposable()) 77 | .forLifeCycle(this) 78 | .onDestroyInvoke(Disposable::dispose) 79 | .observe(); 80 | 81 | } 82 | 83 | @NonNull 84 | private Integer lazyInitialization() { 85 | Log.e("MainActivity", "lazy initialization triggered"); 86 | return 0; 87 | } 88 | 89 | @Override 90 | public void updateLocationOnMap(Location location) { 91 | Log.e("MainActivity","updateLocationOnMap() invoked"); 92 | } 93 | 94 | Disposable intervalDisposable(){ 95 | return Observable.interval(2, TimeUnit.SECONDS) 96 | .subscribe(this::doSomething); 97 | } 98 | 99 | void doSomething(Long tickCount){ 100 | Log.e("MainActivity","doSomething("+tickCount+") invoked"); 101 | } 102 | } 103 | -------------------------------------------------------------------------------- /app/src/main/java/com/sample/MainModel.java: -------------------------------------------------------------------------------- 1 | package com.sample; 2 | 3 | /** 4 | * Created by Ahmed Adel Ismail on 2/4/2018. 5 | */ 6 | 7 | public class MainModel { 8 | } 9 | -------------------------------------------------------------------------------- /app/src/main/java/com/sample/MainPresenter.java: -------------------------------------------------------------------------------- 1 | package com.sample; 2 | 3 | /** 4 | * Created by Ahmed Adel Ismail on 2/4/2018. 5 | */ 6 | 7 | public interface MainPresenter { 8 | 9 | 10 | } 11 | -------------------------------------------------------------------------------- /app/src/main/java/com/sample/MainPresenterImplementer.java: -------------------------------------------------------------------------------- 1 | package com.sample; 2 | 3 | import android.location.Location; 4 | import android.util.Log; 5 | 6 | import com.android.LiteCycle; 7 | 8 | /** 9 | * Created by Ahmed Adel Ismail on 2/4/2018. 10 | */ 11 | 12 | public class MainPresenterImplementer implements MainPresenter { 13 | 14 | MainPresenterImplementer(MainView view) { 15 | LiteCycle.with(locationRetriever(view)) 16 | .forLifeCycle(view) 17 | .onStartInvoke(LocationRetriever::start) 18 | .onResumeInvoke(LocationRetriever::changeLocation) 19 | .onResumeInvoke(LocationRetriever::changeLocation) 20 | .onResumeInvoke(LocationRetriever::changeLocation) 21 | .onResumeInvoke(LocationRetriever::changeLocation) 22 | .onStopInvoke(LocationRetriever::stop) 23 | .observe(); 24 | } 25 | 26 | private LocationRetriever locationRetriever(MainView view) { 27 | return new LocationRetriever() { 28 | @Override 29 | public void onLocationChanged(Location location) { 30 | view.updateLocationOnMap(location); 31 | } 32 | }; 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /app/src/main/java/com/sample/MainView.java: -------------------------------------------------------------------------------- 1 | package com.sample; 2 | 3 | import android.arch.lifecycle.LifecycleOwner; 4 | import android.location.Location; 5 | 6 | /** 7 | * Created by Ahmed Adel Ismail on 2/4/2018. 8 | */ 9 | 10 | public interface MainView extends LifecycleOwner{ 11 | 12 | void updateLocationOnMap(Location location); 13 | 14 | } 15 | -------------------------------------------------------------------------------- /app/src/main/java/com/sample/ReactiveActivity.java: -------------------------------------------------------------------------------- 1 | package com.sample; 2 | 3 | import android.location.Location; 4 | import android.support.annotation.NonNull; 5 | import android.support.v7.app.AppCompatActivity; 6 | import android.util.Log; 7 | import android.widget.TextView; 8 | 9 | import com.android.LiteCycle; 10 | import com.chaining.Lazy; 11 | 12 | import java.util.concurrent.TimeUnit; 13 | 14 | import io.reactivex.Observable; 15 | import io.reactivex.disposables.Disposable; 16 | import io.reactivex.subjects.BehaviorSubject; 17 | 18 | /** 19 | * Created by Ahmed Adel Ismail on 2/4/2018. 20 | */ 21 | 22 | public class ReactiveActivity extends AppCompatActivity { 23 | 24 | private final Observable ticker = 25 | Observable.interval(2, TimeUnit.SECONDS) 26 | .map(String::valueOf); 27 | 28 | private final Lazy textView = 29 | Lazy.defer(() -> (TextView) findViewById(R.id.text_view)); 30 | 31 | private final Observable tickerDisposable = 32 | LiteCycle.with((Disposable) null) 33 | .forLifeCycle(this) 34 | .onCreateUpdate(disposable -> ticker.subscribe(textView.call()::setText)) 35 | .onDestroyInvoke(this::dispose) 36 | .observe(BehaviorSubject.create()); 37 | 38 | private final Observable contentDisplayer = 39 | LiteCycle.with(R.layout.activity_main) 40 | .forLifeCycle(this) 41 | .onCreateInvoke(this::setContentView) 42 | .observe(BehaviorSubject.create()); 43 | 44 | private final Observable locationRetriever = 45 | LiteCycle.defer(this::locationRetriever) 46 | .forLifeCycle(this) 47 | .onStartInvoke(LocationRetriever::start) 48 | .onStopInvoke(LocationRetriever::stop) 49 | .observe(BehaviorSubject.create()); 50 | 51 | private void dispose(Disposable disposable) { 52 | if (!disposable.isDisposed()) disposable.dispose(); 53 | } 54 | 55 | @NonNull 56 | private LocationRetriever locationRetriever() { 57 | return new LocationRetriever() { 58 | 59 | @Override 60 | public void onLocationChanged(Location location) { 61 | textView.call().setText(String.valueOf(location.getLatitude())); 62 | } 63 | }; 64 | } 65 | 66 | Observable integer = LiteCycle.with(10) 67 | .forLifeCycle(this) 68 | .onCreateUpdate(i -> i + 1) 69 | .onStartUpdate(i -> i + 1) 70 | .onResumeUpdate(i -> i + 1) 71 | .onPauseUpdate(i -> i + 1) 72 | .onStopUpdate(i -> i + 1) 73 | .onDestroyUpdate(i -> 10) 74 | .observe(BehaviorSubject.create()); 75 | 76 | 77 | Disposable disposable = integer.subscribe(i -> Log.e("LiteCycle", "integer value " + i)); 78 | 79 | 80 | } 81 | -------------------------------------------------------------------------------- /app/src/main/java/com/sample/SampleActivity.java: -------------------------------------------------------------------------------- 1 | package com.sample; 2 | 3 | import android.support.v7.app.AppCompatActivity; 4 | import android.util.Log; 5 | 6 | import com.android.LiteCycle; 7 | 8 | /** 9 | * Created by Ahmed Adel Ismail on 2/4/2018. 10 | */ 11 | 12 | public class SampleActivity extends AppCompatActivity { 13 | 14 | { 15 | LiteCycle.with(R.layout.activity_main) 16 | .forLifeCycle(this) 17 | .onCreateInvoke(this::setContentView) 18 | .observe(); 19 | 20 | 21 | LiteCycle.with(10) 22 | .forLifeCycle(this) 23 | .onCreateInvoke(i -> Log.e("LiteCycle", "initial value " + i)) 24 | .onCreateUpdate(i -> i + 1) 25 | .onCreateInvoke(i -> Log.e("LiteCycle", "onCreate() invoked " + i)) 26 | .onStartUpdate(i -> i + 1) 27 | .onStartInvoke(i -> Log.e("LiteCycle", "onStart() invoked " + i)) 28 | .onResumeUpdate(i -> i + 1) 29 | .onResumeInvoke(i -> Log.e("LiteCycle", "onResume() invoked " + i)) 30 | .onPauseUpdate(i -> i + 1) 31 | .onPauseInvoke(i -> Log.e("LiteCycle", "onPause() invoked " + i)) 32 | .onStopUpdate(i -> i + 1) 33 | .onStartInvoke(i -> Log.e("LiteCycle", "onStop() invoked " + i)) 34 | .onDestroyUpdate(i -> 10) 35 | .onDestroyInvoke(i -> Log.e("LiteCycle", "onDestroy() invoked " + i)) 36 | .onFinishingUpdate(i -> null) 37 | .onFinishingInvoke(i -> Log.e("LiteCycle", "isFinishing() invoked " + i)) 38 | .observe(); 39 | 40 | 41 | LiteCycle.defer(() -> getIntent().getBooleanExtra("EXTRA", false)) 42 | .forLifeCycle(this) 43 | .onCreateInvoke(extra -> Log.e("LiteCycle", "extra boolean : " + extra)) 44 | .observe(); 45 | 46 | 47 | } 48 | } 49 | -------------------------------------------------------------------------------- /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 | 8 | 11 | 16 | 21 | 26 | 31 | 36 | 41 | 46 | 51 | 56 | 61 | 66 | 71 | 76 | 81 | 86 | 91 | 96 | 101 | 106 | 111 | 116 | 121 | 126 | 131 | 136 | 141 | 146 | 151 | 156 | 161 | 166 | 171 | 172 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 9 | 10 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 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/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 | LiteCycle 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/test/java/com/sample/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package com.sample; 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 | } -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | 5 | repositories { 6 | google() 7 | jcenter() 8 | } 9 | dependencies { 10 | classpath 'com.android.tools.build:gradle:3.2.0' 11 | classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8' 12 | // NOTE: Do not place your application dependencies here; they belong 13 | // in the individual module build.gradle files 14 | } 15 | } 16 | 17 | allprojects { 18 | repositories { 19 | google() 20 | jcenter() 21 | maven { url 'https://jitpack.io' } 22 | } 23 | } 24 | 25 | task clean(type: Delete) { 26 | delete rootProject.buildDir 27 | } 28 | -------------------------------------------------------------------------------- /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 | org.gradle.jvmargs=-Xmx1536m 13 | 14 | # When configured, Gradle will run in incubating parallel mode. 15 | # This option should only be used with decoupled projects. More details, visit 16 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 17 | # org.gradle.parallel=true 18 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Ahmed-Adel-Ismail/LiteCycle/6ae1bf33f6dcbaa6ac2ce00b9e8ec768b07704fb/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Sun Oct 14 12:28:07 EET 2018 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-4.6-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 | -------------------------------------------------------------------------------- /lite-cycle/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /lite-cycle/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | apply plugin: 'maven' 3 | group = 'com.github.Ahmed-Adel-Ismail' 4 | 5 | android { 6 | compileSdkVersion 26 7 | 8 | 9 | 10 | defaultConfig { 11 | minSdkVersion 16 12 | targetSdkVersion 26 13 | versionCode 1 14 | versionName "1.0" 15 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 16 | 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 fileTree(dir: 'libs', include: ['*.jar']) 30 | implementation 'com.android.support:appcompat-v7:26.1.0' 31 | implementation 'com.github.Ahmed-Adel-Ismail:J-Chain:1.4.1' 32 | api 'io.reactivex.rxjava2:rxjava:2.1.16' 33 | testImplementation 'junit:junit:4.12' 34 | } 35 | -------------------------------------------------------------------------------- /lite-cycle/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 | -------------------------------------------------------------------------------- /lite-cycle/src/androidTest/java/com/android/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.android; 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("com.android.test", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /lite-cycle/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | -------------------------------------------------------------------------------- /lite-cycle/src/main/java/com/android/InstantLiteObserver.java: -------------------------------------------------------------------------------- 1 | package com.android; 2 | 3 | import android.arch.lifecycle.LifecycleOwner; 4 | 5 | import io.reactivex.subjects.Subject; 6 | 7 | /** 8 | * an Observer that starts with an already initialized item 9 | *

10 | * Created by Ahmed Adel Ismail on 1/29/2018. 11 | */ 12 | class InstantLiteObserver extends LiteObserver { 13 | 14 | private T item; 15 | 16 | InstantLiteObserver(Builder builder) { 17 | super(builder); 18 | this.item = builder.item; 19 | } 20 | 21 | @Override 22 | T getItem() { 23 | return item; 24 | } 25 | 26 | @Override 27 | void setItem(T item) { 28 | this.item = item; 29 | } 30 | 31 | @Override 32 | void initializeSubject(Subject subject) { 33 | if (item != null) subject.onNext(item); 34 | } 35 | 36 | static final class Builder extends LiteObserverBuilder { 37 | 38 | private T item; 39 | 40 | Builder(LifecycleOwner owner, T item) { 41 | super(owner); 42 | this.item = item; 43 | } 44 | 45 | LiteObserver buildObserver() { 46 | return new InstantLiteObserver<>(this); 47 | } 48 | 49 | 50 | } 51 | } 52 | -------------------------------------------------------------------------------- /lite-cycle/src/main/java/com/android/LazyLiteObserver.java: -------------------------------------------------------------------------------- 1 | package com.android; 2 | 3 | import android.arch.lifecycle.LifecycleOwner; 4 | import android.support.annotation.NonNull; 5 | 6 | import com.chaining.Lazy; 7 | 8 | import java.util.concurrent.Callable; 9 | 10 | 11 | /** 12 | * an Observer that starts with an item that will be initialized upon it's first call 13 | *

14 | * Created by Ahmed Adel Ismail on 1/29/2018. 15 | */ 16 | class LazyLiteObserver extends LiteObserver { 17 | 18 | private Lazy item; 19 | 20 | private LazyLiteObserver(Builder builder) { 21 | super(builder); 22 | item = Lazy.defer(builder.itemInitializer); 23 | } 24 | 25 | @Override 26 | T getItem() { 27 | return item.call(); 28 | } 29 | 30 | @Override 31 | void setItem(final T item) { 32 | this.item = Lazy.defer(itemCallable(item)); 33 | this.item.call(); 34 | } 35 | 36 | @NonNull 37 | private Callable itemCallable(final T item) { 38 | return new Callable() { 39 | @Override 40 | public T call() throws Exception { 41 | return item; 42 | } 43 | }; 44 | } 45 | 46 | static final class Builder extends LiteObserverBuilder { 47 | 48 | private Callable itemInitializer; 49 | 50 | Builder(LifecycleOwner owner, Callable itemInitializer) { 51 | super(owner); 52 | this.itemInitializer = itemInitializer; 53 | } 54 | 55 | LiteObserver buildObserver() { 56 | return new LazyLiteObserver<>(this); 57 | } 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /lite-cycle/src/main/java/com/android/LiteCycle.java: -------------------------------------------------------------------------------- 1 | package com.android; 2 | 3 | import android.arch.lifecycle.LifecycleObserver; 4 | import android.arch.lifecycle.LifecycleOwner; 5 | 6 | import java.util.concurrent.Callable; 7 | 8 | /** 9 | * a class that holds the Object which will be affected by the {@link LifecycleOwner} 10 | *

11 | * Created by Ahmed Adel Ismail on 1/29/2018. 12 | */ 13 | public class LiteCycle implements LifecycleObserver { 14 | 15 | /** 16 | * initialize the stored item when it is first accessed in the life-cycle 17 | * 18 | * @param itemInitializer the {@link Callable} that will lazy-initialize the item 19 | * @param the expected item type 20 | * @return a {@link LiteObserverFactory} to create the related {@link LiteObserver} 21 | */ 22 | public static LiteObserverFactory defer(Callable itemInitializer) { 23 | return new LiteObserverFactory<>(itemInitializer); 24 | } 25 | 26 | /** 27 | * initialize the {@link LiteCycle} with the passed item 28 | * 29 | * @param item the initial item 30 | * @param the item type 31 | * @return a {@link LiteObserverFactory} to create the related {@link LiteObserver} 32 | */ 33 | public static LiteObserverFactory with(T item) { 34 | return new LiteObserverFactory<>(item); 35 | } 36 | 37 | } 38 | -------------------------------------------------------------------------------- /lite-cycle/src/main/java/com/android/LiteObserver.java: -------------------------------------------------------------------------------- 1 | package com.android; 2 | 3 | import android.app.Activity; 4 | import android.arch.lifecycle.Lifecycle; 5 | import android.arch.lifecycle.LifecycleObserver; 6 | import android.arch.lifecycle.LifecycleOwner; 7 | import android.arch.lifecycle.OnLifecycleEvent; 8 | import android.support.annotation.NonNull; 9 | import android.support.v4.app.Fragment; 10 | 11 | import java.util.List; 12 | 13 | import io.reactivex.Observable; 14 | import io.reactivex.functions.Consumer; 15 | import io.reactivex.functions.Function; 16 | import io.reactivex.subjects.BehaviorSubject; 17 | import io.reactivex.subjects.Subject; 18 | 19 | /** 20 | * the {@link LifecycleObserver} that will invoke the required functions in the life-cycle events 21 | *

22 | * Created by Ahmed Adel Ismail on 1/29/2018. 23 | */ 24 | public abstract class LiteObserver implements LifecycleObserver { 25 | 26 | private Subject subject; 27 | private final LifecycleOwner owner; 28 | private final List onCreate; 29 | private final List onStart; 30 | private final List onResume; 31 | private final List onPause; 32 | private final List onStop; 33 | private final List onDestroy; 34 | private final List onFinishing; 35 | 36 | LiteObserver(LiteObserverBuilder builder) { 37 | owner = builder.owner; 38 | onCreate = builder.onCreate; 39 | onStart = builder.onStart; 40 | onResume = builder.onResume; 41 | onPause = builder.onPause; 42 | onStop = builder.onStop; 43 | onDestroy = builder.onDestroy; 44 | onFinishing = builder.onFinishing; 45 | } 46 | 47 | @OnLifecycleEvent(Lifecycle.Event.ON_CREATE) 48 | void onCreate() throws Exception { 49 | for (Object action : onCreate) { 50 | invoke(action); 51 | } 52 | } 53 | 54 | 55 | @SuppressWarnings("unchecked") 56 | private void invoke(Object action) throws Exception { 57 | if (action instanceof Consumer) { 58 | ((Consumer) action).accept(getItem()); 59 | } else if (action instanceof Function) { 60 | updateItemAndNotifySubject((Function) action); 61 | } 62 | } 63 | 64 | @NonNull 65 | abstract T getItem(); 66 | 67 | private void updateItemAndNotifySubject(Function action) { 68 | try { 69 | setItem(action.apply(getItem())); 70 | if (getItem() != null) subject.onNext(getItem()); 71 | } catch (Throwable e) { 72 | subject.onError(e); 73 | } 74 | } 75 | 76 | abstract void setItem(@NonNull T item); 77 | 78 | @OnLifecycleEvent(Lifecycle.Event.ON_START) 79 | void onStart() throws Exception { 80 | for (Object action : onStart) { 81 | invoke(action); 82 | } 83 | } 84 | 85 | @OnLifecycleEvent(Lifecycle.Event.ON_RESUME) 86 | void onResume() throws Exception { 87 | for (Object action : onResume) { 88 | invoke(action); 89 | } 90 | } 91 | 92 | @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE) 93 | void onPause() throws Exception { 94 | for (Object action : onPause) { 95 | invoke(action); 96 | } 97 | } 98 | 99 | @OnLifecycleEvent(Lifecycle.Event.ON_STOP) 100 | void onStop() throws Exception { 101 | for (Object action : onStop) { 102 | invoke(action); 103 | } 104 | } 105 | 106 | @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY) 107 | void onDestroy() throws Exception { 108 | for (Object action : onDestroy) { 109 | invoke(action); 110 | } 111 | 112 | if (isActivityFinishing() || isFragmentFinishing()) { 113 | for (Object action : onFinishing) { 114 | invoke(action); 115 | } 116 | } 117 | 118 | subject.onComplete(); 119 | } 120 | 121 | private boolean isActivityFinishing() { 122 | return owner instanceof Activity && ((Activity) owner).isFinishing(); 123 | } 124 | 125 | private boolean isFragmentFinishing() { 126 | return owner instanceof Fragment && 127 | (((Fragment) owner).getActivity() == null 128 | || ((Fragment) owner).getActivity().isFinishing()); 129 | } 130 | 131 | void observe() { 132 | observe(BehaviorSubject.create()); 133 | } 134 | 135 | Observable observe(@NonNull Subject observableType) { 136 | subject = observableType; 137 | initializeSubject(subject); 138 | owner.getLifecycle().addObserver(this); 139 | return subject; 140 | } 141 | 142 | /** 143 | * template method for initializing the {@link Subject} by the subclasses 144 | * 145 | * @param subject the {@link Subject} that monitors the item changes 146 | */ 147 | void initializeSubject(Subject subject) { 148 | // do nothing 149 | } 150 | 151 | } 152 | -------------------------------------------------------------------------------- /lite-cycle/src/main/java/com/android/LiteObserverBuilder.java: -------------------------------------------------------------------------------- 1 | package com.android; 2 | 3 | import android.annotation.SuppressLint; 4 | import android.arch.lifecycle.LifecycleOwner; 5 | import android.support.annotation.NonNull; 6 | 7 | import java.util.LinkedList; 8 | import java.util.List; 9 | 10 | import io.reactivex.Observable; 11 | import io.reactivex.functions.Consumer; 12 | import io.reactivex.functions.Function; 13 | import io.reactivex.subjects.BehaviorSubject; 14 | import io.reactivex.subjects.Subject; 15 | 16 | /** 17 | * the abstract life-cycle builder 18 | *

19 | * Created by Ahmed Adel Ismail on 1/29/2018. 20 | */ 21 | 22 | @SuppressLint("CheckResult") 23 | @SuppressWarnings("unchecked") 24 | public abstract class LiteObserverBuilder { 25 | 26 | final LifecycleOwner owner; 27 | final List onCreate = new LinkedList<>(); 28 | final List onStart = new LinkedList<>(); 29 | final List onResume = new LinkedList<>(); 30 | final List onPause = new LinkedList<>(); 31 | final List onStop = new LinkedList<>(); 32 | final List onDestroy = new LinkedList<>(); 33 | final List onFinishing = new LinkedList<>(); 34 | 35 | 36 | LiteObserverBuilder(LifecycleOwner owner) { 37 | this.owner = owner; 38 | } 39 | 40 | /** 41 | * add a {@link Consumer} that will be invoked in {@code onCreate()} 42 | * 43 | * @param action a {@link Consumer} to be invoked 44 | * @return {@code this} instance for chaining 45 | */ 46 | public final LiteObserverBuilder onCreateInvoke(Consumer action) { 47 | this.onCreate.add(action); 48 | return this; 49 | } 50 | 51 | public final LiteObserverBuilder onCreateUpdate(Function action) { 52 | this.onCreate.add(action); 53 | return this; 54 | } 55 | 56 | /** 57 | * add a {@link Consumer} that will be invoked in {@code onStart()} 58 | * 59 | * @param action a {@link Consumer} to be invoked 60 | * @return {@code this} instance for chaining 61 | */ 62 | public final LiteObserverBuilder onStartInvoke(Consumer action) { 63 | this.onStart.add(action); 64 | return this; 65 | } 66 | 67 | /** 68 | * add a {@link Function} that will update the stored item, it will be invoked when 69 | * {@code onCreate()} is invoked 70 | * 71 | * @param action a {@link Function} to be invoked and it's result will update the stored item 72 | * @return {@code this} instance for chaining 73 | */ 74 | public final LiteObserverBuilder onStartUpdate(Function action) { 75 | this.onStart.add(action); 76 | return this; 77 | } 78 | 79 | /** 80 | * add a {@link Consumer} that will be invoked in {@code onResume()} 81 | * 82 | * @param action a {@link Consumer} to be invoked 83 | * @return {@code this} instance for chaining 84 | */ 85 | public final LiteObserverBuilder onResumeInvoke(Consumer action) { 86 | this.onResume.add(action); 87 | return this; 88 | } 89 | 90 | /** 91 | * add a {@link Function} that will update the stored item, it will be invoked when 92 | * {@code onResume()} is invoked 93 | * 94 | * @param action a {@link Function} to be invoked and it's result will update the stored item 95 | * @return {@code this} instance for chaining 96 | */ 97 | public final LiteObserverBuilder onResumeUpdate(Function action) { 98 | this.onResume.add(action); 99 | return this; 100 | } 101 | 102 | 103 | /** 104 | * add a {@link Consumer} that will be invoked in {@code onPause()} 105 | * 106 | * @param action a {@link Consumer} to be invoked 107 | * @return {@code this} instance for chaining 108 | */ 109 | public final LiteObserverBuilder onPauseInvoke(Consumer action) { 110 | this.onPause.add(action); 111 | return this; 112 | } 113 | 114 | /** 115 | * add a {@link Function} that will update the stored item, it will be invoked when 116 | * {@code onPause()} is invoked 117 | * 118 | * @param action a {@link Function} to be invoked and it's result will update the stored item 119 | * @return {@code this} instance for chaining 120 | */ 121 | public final LiteObserverBuilder onPauseUpdate(Function action) { 122 | this.onPause.add(action); 123 | return this; 124 | } 125 | 126 | 127 | /** 128 | * add a {@link Consumer} that will be invoked in {@code onStop()} 129 | * 130 | * @param action a {@link Consumer} to be invoked 131 | * @return {@code this} instance for chaining 132 | */ 133 | public final LiteObserverBuilder onStopInvoke(Consumer action) { 134 | this.onStop.add(action); 135 | return this; 136 | } 137 | 138 | /** 139 | * add a {@link Function} that will update the stored item, it will be invoked when 140 | * {@code onStop()} is invoked 141 | * 142 | * @param action a {@link Function} to be invoked and it's result will update the stored item 143 | * @return {@code this} instance for chaining 144 | */ 145 | public final LiteObserverBuilder onStopUpdate(Function action) { 146 | this.onStop.add(action); 147 | return this; 148 | } 149 | 150 | 151 | /** 152 | * add a {@link Consumer} that will be invoked in {@code onDestroy()} 153 | * 154 | * @param action a {@link Consumer} to be invoked 155 | * @return {@code this} instance for chaining 156 | */ 157 | public final LiteObserverBuilder onDestroyInvoke(Consumer action) { 158 | this.onDestroy.add(action); 159 | return this; 160 | } 161 | 162 | /** 163 | * add a {@link Function} that will update the stored item, it will be invoked when 164 | * {@code onDestroy()} is invoked 165 | * 166 | * @param action a {@link Function} to be invoked and it's result will update the stored item 167 | * @return {@code this} instance for chaining 168 | */ 169 | public final LiteObserverBuilder onDestroyUpdate(Function action) { 170 | this.onDestroy.add(action); 171 | return this; 172 | } 173 | 174 | /** 175 | * add a {@link Consumer} that will be invoked in {@code onDestroy()} in-case that the 176 | * {@link LifecycleOwner} is finishing (not rotating) 177 | * 178 | * @param action a {@link Consumer} to be invoked 179 | * @return {@code this} instance for chaining 180 | */ 181 | public final LiteObserverBuilder onFinishingInvoke(Consumer action) { 182 | this.onFinishing.add(action); 183 | return this; 184 | } 185 | 186 | /** 187 | * add a {@link Function} that will update the stored item, it will be invoked when 188 | * {@code onDestroy()} is invoked, in-case that the 189 | * {@link LifecycleOwner} is finishing (not rotating) 190 | * 191 | * @param action a {@link Function} to be invoked and it's result will update the stored item 192 | * @return {@code this} instance for chaining 193 | */ 194 | public final LiteObserverBuilder onFinishingUpdate(Function action) { 195 | this.onFinishing.add(action); 196 | return this; 197 | } 198 | 199 | /** 200 | * start observation on life-Cycle events 201 | */ 202 | public final void observe() { 203 | buildObserver().observe(); 204 | } 205 | 206 | abstract LiteObserver buildObserver(); 207 | 208 | /** 209 | * observe on the life-Cycle events 210 | * 211 | * @param observableType the type of the {@link Subject} that listens to the updates of 212 | * the value from the life-cycle events, the default one used by 213 | * {@link #observe()} is {@link BehaviorSubject} 214 | * @return the {@link Observable} which will be notified when the value is updated 215 | */ 216 | public final Observable observe(@NonNull Subject observableType) { 217 | return buildObserver().observe(observableType); 218 | } 219 | } 220 | -------------------------------------------------------------------------------- /lite-cycle/src/main/java/com/android/LiteObserverFactory.java: -------------------------------------------------------------------------------- 1 | package com.android; 2 | 3 | import android.arch.lifecycle.LifecycleOwner; 4 | 5 | import java.util.concurrent.Callable; 6 | 7 | /** 8 | * a LiteObserverFactory that handles initializing the item and life-cycle events 9 | * 10 | * @param the item type that will be held by the {@link LiteCycle} 11 | */ 12 | public class LiteObserverFactory { 13 | 14 | private final T item; 15 | private final Callable itemInitializer; 16 | 17 | LiteObserverFactory(T item) { 18 | this.item = item; 19 | this.itemInitializer = null; 20 | } 21 | 22 | LiteObserverFactory(Callable itemInitializer) { 23 | this.itemInitializer = itemInitializer; 24 | this.item = null; 25 | } 26 | 27 | /** 28 | * attach the {@link LiteCycle} to a {@link LifecycleOwner} 29 | * 30 | * @param lifecycleOwner the {@link LifecycleOwner} 31 | * @return a {@link LiteObserverFactory} to handle completing the operation 32 | */ 33 | public LiteObserverBuilder forLifeCycle(LifecycleOwner lifecycleOwner) { 34 | if (itemInitializer != null) { 35 | return new LazyLiteObserver.Builder<>(lifecycleOwner, itemInitializer); 36 | } else { 37 | return new InstantLiteObserver.Builder<>(lifecycleOwner, item); 38 | } 39 | } 40 | 41 | 42 | } 43 | -------------------------------------------------------------------------------- /lite-cycle/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | lite-cycle 3 | 4 | -------------------------------------------------------------------------------- /lite-cycle/src/test/java/com/android/LiteCycleTest.java: -------------------------------------------------------------------------------- 1 | package com.android; 2 | 3 | import junit.framework.AssertionFailedError; 4 | 5 | import org.junit.Test; 6 | 7 | import java.util.concurrent.Callable; 8 | 9 | import io.reactivex.functions.Consumer; 10 | import io.reactivex.functions.Function; 11 | import io.reactivex.subjects.BehaviorSubject; 12 | import io.reactivex.subjects.PublishSubject; 13 | 14 | import static org.junit.Assert.assertEquals; 15 | import static org.junit.Assert.assertTrue; 16 | 17 | public class LiteCycleTest { 18 | 19 | @Test 20 | public void onCreateInvokeForCreatedOwnerThenUpdateValue() { 21 | final boolean[] result = new boolean[]{false}; 22 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 23 | LiteCycle.with(0) 24 | .forLifeCycle(owner) 25 | .onCreateInvoke(new Consumer() { 26 | @Override 27 | public void accept(Integer integer) throws Exception { 28 | result[0] = true; 29 | } 30 | }).observe(); 31 | 32 | owner.create(); 33 | 34 | assertTrue(result[0]); 35 | } 36 | 37 | @Test 38 | public void onCreateUpdateForCreatedOwnerThenUpdateValue() { 39 | final int[] result = new int[]{0}; 40 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 41 | LiteCycle.with(0) 42 | .forLifeCycle(owner) 43 | .onCreateUpdate(new Function() { 44 | @Override 45 | public Integer apply(Integer integer) throws Exception { 46 | result[0] = 1; 47 | return 1; 48 | } 49 | }).observe(); 50 | 51 | owner.create(); 52 | 53 | assertEquals(1, result[0]); 54 | } 55 | 56 | @Test 57 | public void onStartInvokeForCreatedOwnerThenUpdateValue() { 58 | final boolean[] result = new boolean[]{false}; 59 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 60 | LiteCycle.with(0) 61 | .forLifeCycle(owner) 62 | .onStartInvoke(new Consumer() { 63 | @Override 64 | public void accept(Integer integer) throws Exception { 65 | result[0] = true; 66 | } 67 | }).observe(); 68 | 69 | owner.create(); 70 | owner.start(); 71 | 72 | assertTrue(result[0]); 73 | } 74 | 75 | @Test 76 | public void onStartUpdateForCreatedOwnerThenUpdateValue() { 77 | final int[] result = new int[]{0}; 78 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 79 | LiteCycle.with(0) 80 | .forLifeCycle(owner) 81 | .onStartUpdate(new Function() { 82 | @Override 83 | public Integer apply(Integer integer) throws Exception { 84 | result[0] = 1; 85 | return 1; 86 | } 87 | }).observe(); 88 | 89 | owner.create(); 90 | owner.start(); 91 | 92 | assertEquals(1, result[0]); 93 | } 94 | 95 | @Test 96 | public void onResumeInvokeForCreatedOwnerThenUpdateValue() { 97 | final boolean[] result = new boolean[]{false}; 98 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 99 | LiteCycle.with(0) 100 | .forLifeCycle(owner) 101 | .onResumeInvoke(new Consumer() { 102 | @Override 103 | public void accept(Integer integer) throws Exception { 104 | result[0] = true; 105 | } 106 | }).observe(); 107 | 108 | owner.create(); 109 | owner.start(); 110 | owner.resume(); 111 | 112 | assertTrue(result[0]); 113 | } 114 | 115 | @Test 116 | public void onResumeUpdateForCreatedOwnerThenUpdateValue() { 117 | final int[] result = new int[]{0}; 118 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 119 | LiteCycle.with(0) 120 | .forLifeCycle(owner) 121 | .onResumeUpdate(new Function() { 122 | @Override 123 | public Integer apply(Integer integer) throws Exception { 124 | result[0] = 1; 125 | return 1; 126 | } 127 | }).observe(); 128 | 129 | owner.create(); 130 | owner.start(); 131 | owner.resume(); 132 | 133 | assertEquals(1, result[0]); 134 | } 135 | 136 | @Test 137 | public void onPauseInvokeForCreatedOwnerThenUpdateValue() { 138 | final boolean[] result = new boolean[]{false}; 139 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 140 | LiteCycle.with(0) 141 | .forLifeCycle(owner) 142 | .onPauseInvoke(new Consumer() { 143 | @Override 144 | public void accept(Integer integer) throws Exception { 145 | result[0] = true; 146 | } 147 | }).observe(); 148 | 149 | owner.create(); 150 | owner.start(); 151 | owner.resume(); 152 | owner.pause(); 153 | 154 | assertTrue(result[0]); 155 | } 156 | 157 | @Test 158 | public void onPauseUpdateForCreatedOwnerThenUpdateValue() { 159 | final int[] result = new int[]{0}; 160 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 161 | LiteCycle.with(0) 162 | .forLifeCycle(owner) 163 | .onPauseUpdate(new Function() { 164 | @Override 165 | public Integer apply(Integer integer) throws Exception { 166 | result[0] = 1; 167 | return 1; 168 | } 169 | }).observe(); 170 | 171 | owner.create(); 172 | owner.start(); 173 | owner.resume(); 174 | owner.pause(); 175 | 176 | assertEquals(1, result[0]); 177 | } 178 | 179 | @Test 180 | public void onStopInvokeForCreatedOwnerThenUpdateValue() { 181 | final boolean[] result = new boolean[]{false}; 182 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 183 | LiteCycle.with(0) 184 | .forLifeCycle(owner) 185 | .onStopInvoke(new Consumer() { 186 | @Override 187 | public void accept(Integer integer) throws Exception { 188 | result[0] = true; 189 | } 190 | }).observe(); 191 | 192 | owner.create(); 193 | owner.start(); 194 | owner.resume(); 195 | owner.pause(); 196 | owner.stop(); 197 | 198 | assertTrue(result[0]); 199 | } 200 | 201 | @Test 202 | public void onStopUpdateForCreatedOwnerThenUpdateValue() { 203 | final int[] result = new int[]{0}; 204 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 205 | LiteCycle.with(0) 206 | .forLifeCycle(owner) 207 | .onStopUpdate(new Function() { 208 | @Override 209 | public Integer apply(Integer integer) throws Exception { 210 | result[0] = 1; 211 | return 1; 212 | } 213 | }).observe(); 214 | 215 | owner.create(); 216 | owner.start(); 217 | owner.resume(); 218 | owner.pause(); 219 | owner.stop(); 220 | 221 | assertEquals(1, result[0]); 222 | } 223 | 224 | @Test 225 | public void onDestroyInvokeForCreatedOwnerThenUpdateValue() { 226 | final boolean[] result = new boolean[]{false}; 227 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 228 | LiteCycle.with(0) 229 | .forLifeCycle(owner) 230 | .onDestroyInvoke(new Consumer() { 231 | @Override 232 | public void accept(Integer integer) throws Exception { 233 | result[0] = true; 234 | } 235 | }).observe(); 236 | 237 | owner.create(); 238 | owner.start(); 239 | owner.resume(); 240 | owner.pause(); 241 | owner.stop(); 242 | owner.destroy(); 243 | 244 | assertTrue(result[0]); 245 | } 246 | 247 | @Test 248 | public void onDestroyUpdateForCreatedOwnerThenUpdateValue() { 249 | final int[] result = new int[]{0}; 250 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 251 | LiteCycle.with(0) 252 | .forLifeCycle(owner) 253 | .onDestroyUpdate(new Function() { 254 | @Override 255 | public Integer apply(Integer integer) throws Exception { 256 | result[0] = 1; 257 | return 1; 258 | } 259 | }).observe(); 260 | 261 | owner.create(); 262 | owner.start(); 263 | owner.resume(); 264 | owner.pause(); 265 | owner.stop(); 266 | owner.destroy(); 267 | 268 | assertEquals(1, result[0]); 269 | } 270 | 271 | @Test 272 | public void deferWithCallableThenInvokeCallOnFirstInvoke() { 273 | final boolean[] result = new boolean[]{false}; 274 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 275 | LiteCycle 276 | .defer(new Callable() { 277 | @Override 278 | public Integer call() throws Exception { 279 | result[0] = true; 280 | return 0; 281 | } 282 | }) 283 | .forLifeCycle(owner) 284 | .onResumeInvoke(new Consumer() { 285 | @Override 286 | public void accept(Integer integer) throws Exception { 287 | // do nothing 288 | } 289 | }) 290 | .observe(); 291 | 292 | owner.create(); 293 | 294 | if (result[0]) { 295 | throw new AssertionFailedError("lazy initialization happened before update()"); 296 | } 297 | 298 | owner.resume(); 299 | 300 | assertTrue(result[0]); 301 | 302 | } 303 | 304 | @Test 305 | public void deferWithCallableThenInvokeCallOnFirstUpdate() { 306 | final boolean[] result = new boolean[]{false}; 307 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 308 | LiteCycle 309 | .defer(new Callable() { 310 | @Override 311 | public Integer call() throws Exception { 312 | result[0] = true; 313 | return 0; 314 | } 315 | }) 316 | .forLifeCycle(owner) 317 | .onResumeUpdate(new Function() { 318 | @Override 319 | public Integer apply(Integer integer) throws Exception { 320 | return 1; 321 | } 322 | }) 323 | .observe(); 324 | 325 | owner.create(); 326 | 327 | if (result[0]) { 328 | throw new AssertionFailedError("lazy initialization happened before update()"); 329 | } 330 | 331 | owner.resume(); 332 | 333 | assertTrue(result[0]); 334 | 335 | } 336 | 337 | @Test 338 | public void observeWithNoParameterThenReturnBehaviorSubject() { 339 | Object subject = LiteCycle.with(0) 340 | .forLifeCycle(new MockLifeCycleOwner()) 341 | .observe(BehaviorSubject.create()); 342 | assertTrue(subject instanceof BehaviorSubject); 343 | } 344 | 345 | @Test 346 | public void observeWithUpdatingValueThenUpdateValue() { 347 | final int[] result = {0}; 348 | MockLifeCycleOwner owner = new MockLifeCycleOwner(); 349 | 350 | LiteCycle.with(result[0]) 351 | .forLifeCycle(owner) 352 | .onCreateUpdate(new Function() { 353 | @Override 354 | public Integer apply(Integer integer) throws Exception { 355 | return 1; 356 | } 357 | }) 358 | .onResumeInvoke(new Consumer() { 359 | @Override 360 | public void accept(Integer integer) throws Exception { 361 | result[0] = integer; 362 | } 363 | }) 364 | .observe(); 365 | 366 | owner.create(); 367 | owner.resume(); 368 | 369 | assertEquals(1,result[0]); 370 | } 371 | 372 | @Test 373 | public void observeWithPublishSubjectParameterThenReturnPublishSubject() { 374 | Object subject = LiteCycle.with(0) 375 | .forLifeCycle(new MockLifeCycleOwner()) 376 | .observe(PublishSubject.create()); 377 | assertTrue(subject instanceof PublishSubject); 378 | } 379 | 380 | 381 | } -------------------------------------------------------------------------------- /lite-cycle/src/test/java/com/android/MockLifeCycleOwner.java: -------------------------------------------------------------------------------- 1 | package com.android; 2 | 3 | import android.arch.lifecycle.Lifecycle; 4 | import android.arch.lifecycle.LifecycleOwner; 5 | import android.arch.lifecycle.LifecycleRegistry; 6 | 7 | /** 8 | * Created by Ahmed Adel Ismail on 2/6/2018. 9 | */ 10 | 11 | public class MockLifeCycleOwner implements LifecycleOwner { 12 | 13 | private LifecycleRegistry lifecycleRegistry; 14 | 15 | public MockLifeCycleOwner() { 16 | lifecycleRegistry = new LifecycleRegistry(this); 17 | } 18 | 19 | public void create() { 20 | lifecycleRegistry.handleLifecycleEvent(Lifecycle.Event.ON_CREATE); 21 | } 22 | 23 | public void start() { 24 | lifecycleRegistry.handleLifecycleEvent(Lifecycle.Event.ON_START); 25 | } 26 | 27 | public void resume() { 28 | lifecycleRegistry.handleLifecycleEvent(Lifecycle.Event.ON_RESUME); 29 | } 30 | 31 | public void pause() { 32 | lifecycleRegistry.handleLifecycleEvent(Lifecycle.Event.ON_PAUSE); 33 | } 34 | 35 | public void stop() { 36 | lifecycleRegistry.handleLifecycleEvent(Lifecycle.Event.ON_STOP); 37 | } 38 | 39 | public void destroy() { 40 | lifecycleRegistry.handleLifecycleEvent(Lifecycle.Event.ON_DESTROY); 41 | } 42 | 43 | @Override 44 | public Lifecycle getLifecycle() { 45 | return lifecycleRegistry; 46 | } 47 | } 48 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app', ':lite-cycle' 2 | --------------------------------------------------------------------------------