├── .gitignore ├── CONTRIBUTING.md ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── mindorks │ │ └── rxjava3 │ │ └── android │ │ └── examples │ │ └── ExampleInstrumentedTest.kt │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── mindorks │ │ │ └── rxjava3 │ │ │ └── android │ │ │ └── examples │ │ │ ├── model │ │ │ ├── ApiUser.kt │ │ │ ├── User.kt │ │ │ └── UserDetail.kt │ │ │ ├── ui │ │ │ ├── OperatorsActivity.kt │ │ │ ├── SelectionActivity.kt │ │ │ ├── operators │ │ │ │ ├── ConcatExampleActivity.kt │ │ │ │ ├── DelayExampleActivity.kt │ │ │ │ ├── FilterExampleActivity.kt │ │ │ │ ├── MapExampleActivity.kt │ │ │ │ ├── MergeExampleActivity.kt │ │ │ │ ├── SimpleExampleActivity.kt │ │ │ │ ├── TimerExampleActivity.kt │ │ │ │ └── ZipExampleActivity.kt │ │ │ └── search │ │ │ │ └── SearchActivity.kt │ │ │ └── utils │ │ │ ├── AppConstant.kt │ │ │ ├── Extensions.kt │ │ │ └── Utils.kt │ └── res │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ └── ic_launcher_background.xml │ │ ├── layout │ │ ├── activity_example.xml │ │ ├── activity_operators.xml │ │ ├── activity_search.xml │ │ └── activity_selection.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 │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── mindorks │ └── rxjava3 │ └── android │ └── examples │ └── ExampleUnitTest.kt ├── assets └── rxjava3.jpg ├── build.gradle ├── 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/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | /.idea 16 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # Contributing 2 | 3 | 1. 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We also recommend that a 186 | file or class name and description of purpose be included on the 187 | same "printed page" as the copyright notice for easier 188 | identification within third-party archives. 189 | 190 | Copyright [yyyy] [name of copyright owner] 191 | 192 | Licensed under the Apache License, Version 2.0 (the "License"); 193 | you may not use this file except in compliance with the License. 194 | You may obtain a copy of the License at 195 | 196 | http://www.apache.org/licenses/LICENSE-2.0 197 | 198 | Unless required by applicable law or agreed to in writing, software 199 | distributed under the License is distributed on an "AS IS" BASIS, 200 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 201 | See the License for the specific language governing permissions and 202 | limitations under the License. -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | 2 | 3 | # RxJava3-Android-Examples - Learn RxJava3 for Android by Examples 4 | 5 | ## [Outcome School Blog](https://outcomeschool.com/blog) - High-quality content to learn Android concepts. 6 | 7 | ### This project is for: 8 | * who is migrating to RxJava 3 from RxJava 2 9 | * who is just getting started with RxJava 10 | 11 | ### Just Build the project and start learning RxJava 3 by examples. 12 | 13 | # RxJava 3 Operators Examples present in this sample project 14 | * `Map` -> transform the items emitted by an Observable by applying a function to each item 15 | * `Zip` -> combine the emissions of multiple Observables together via a specified function and emit single items for each combination based on the results of this function 16 | * `Filter` -> emit only those items from an Observable that pass a predicate test 17 | * `Concat` -> emit the emissions from two or more Observables without interleaving them 18 | * `Merge` -> combine multiple Observables into one by merging their emissions 19 | * `SwitchMap` -> transform the items emitted by an Observable into Observables, and mirror those items emitted by the most-recently transformed Observable 20 | * `timer` -> do something after a span of time that we specify 21 | * `delay` -> shift the emissions from an Observable forward in time by a particular amount 22 | * `debounce` -> only emit an item from an Observable if a particular timespan has passed without it emitting another item 23 | * `distinctUntilChanged` -> suppress duplicate items emitted by an Observable 24 | 25 | ## If this project helps you in anyway, show your love :heart: by putting a :star: on this project :v: 26 | 27 | You can connect with me on: 28 | 29 | - [Twitter](https://twitter.com/amitiitbhu) 30 | - [LinkedIn](https://www.linkedin.com/in/amit-shekhar-iitbhu) 31 | - [GitHub](https://github.com/amitshekhariitbhu) 32 | - [Facebook](https://www.facebook.com/amit.shekhar.iitbhu) 33 | 34 | [**Read all of our blogs here.**](https://outcomeschool.com/blog) 35 | 36 | ### License 37 | ``` 38 | Copyright (C) 2024 Amit Shekhar 39 | 40 | Licensed under the Apache License, Version 2.0 (the "License"); 41 | you may not use this file except in compliance with the License. 42 | You may obtain a copy of the License at 43 | 44 | http://www.apache.org/licenses/LICENSE-2.0 45 | 46 | Unless required by applicable law or agreed to in writing, software 47 | distributed under the License is distributed on an "AS IS" BASIS, 48 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 49 | See the License for the specific language governing permissions and 50 | limitations under the License. 51 | ``` 52 | 53 | ### Contributing to RxJava 3 Android Examples 54 | Just make pull request. You are in! 55 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | apply plugin: 'kotlin-android' 3 | apply plugin: 'kotlin-android-extensions' 4 | 5 | android { 6 | compileSdkVersion 30 7 | defaultConfig { 8 | applicationId "com.mindorks.rxjava3.android.examples" 9 | minSdkVersion 21 10 | targetSdkVersion 30 11 | versionCode 1 12 | versionName "1.0" 13 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 14 | } 15 | buildTypes { 16 | release { 17 | minifyEnabled false 18 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 19 | } 20 | } 21 | compileOptions { 22 | sourceCompatibility JavaVersion.VERSION_1_8 23 | targetCompatibility JavaVersion.VERSION_1_8 24 | } 25 | } 26 | 27 | dependencies { 28 | implementation fileTree(dir: 'libs', include: ['*.jar']) 29 | 30 | implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 31 | 32 | // AndroidX 33 | implementation 'androidx.appcompat:appcompat:1.2.0' 34 | implementation 'androidx.core:core-ktx:1.3.2' 35 | implementation 'androidx.constraintlayout:constraintlayout:2.0.4' 36 | 37 | // RxJava3 Dependencies 38 | implementation 'io.reactivex.rxjava3:rxjava:3.0.0' 39 | implementation 'io.reactivex.rxjava3:rxandroid:3.0.0' 40 | 41 | testImplementation 'junit:junit:4.13.2' 42 | androidTestImplementation 'androidx.test.ext:junit:1.1.2' 43 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0' 44 | } 45 | -------------------------------------------------------------------------------- /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/mindorks/rxjava3/android/examples/ExampleInstrumentedTest.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples 2 | 3 | import androidx.test.platform.app.InstrumentationRegistry 4 | import androidx.test.ext.junit.runners.AndroidJUnit4 5 | 6 | import org.junit.Test 7 | import org.junit.runner.RunWith 8 | 9 | import org.junit.Assert.* 10 | 11 | /** 12 | * Instrumented test, which will execute on an Android device. 13 | * 14 | * See [testing documentation](http://d.android.com/tools/testing). 15 | */ 16 | @RunWith(AndroidJUnit4::class) 17 | class ExampleInstrumentedTest { 18 | @Test 19 | fun useAppContext() { 20 | // Context of the app under test. 21 | val appContext = InstrumentationRegistry.getInstrumentation().targetContext 22 | assertEquals("com.mindorks.rxjava3.android.examples", appContext.packageName) 23 | } 24 | } 25 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 22 | 25 | 28 | 31 | 34 | 37 | 40 | 43 | 46 | 49 | 50 | 51 | -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/model/ApiUser.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.model 2 | 3 | data class ApiUser( 4 | var id: Long = 0L, 5 | var firstname: String, 6 | var lastname: String 7 | ) -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/model/User.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.model 2 | 3 | data class User( 4 | var id: Long = 0L, 5 | var firstname: String, 6 | var lastname: String, 7 | var isFollowing: Boolean = false 8 | ) 9 | -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/model/UserDetail.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.model 2 | 3 | data class UserDetail( 4 | var id: Long = 0L, 5 | var firstname: String, 6 | var lastname: String 7 | ) 8 | -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/OperatorsActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui 2 | 3 | import android.content.Intent 4 | import android.os.Bundle 5 | import android.view.View 6 | import androidx.appcompat.app.AppCompatActivity 7 | import com.mindorks.rxjava3.android.examples.R 8 | import com.mindorks.rxjava3.android.examples.ui.operators.* 9 | 10 | class OperatorsActivity : AppCompatActivity() { 11 | 12 | override fun onCreate(savedInstanceState: Bundle?) { 13 | super.onCreate(savedInstanceState) 14 | setContentView(R.layout.activity_operators) 15 | } 16 | 17 | fun startSimpleActivity(view: View) { 18 | startActivity(Intent(this@OperatorsActivity, SimpleExampleActivity::class.java)) 19 | } 20 | 21 | fun startMapActivity(view: View) { 22 | startActivity(Intent(this@OperatorsActivity, MapExampleActivity::class.java)) 23 | } 24 | 25 | fun startZipActivity(view: View) { 26 | startActivity(Intent(this@OperatorsActivity, ZipExampleActivity::class.java)) 27 | } 28 | 29 | fun startTimerActivity(view: View) { 30 | startActivity(Intent(this@OperatorsActivity, TimerExampleActivity::class.java)) 31 | } 32 | 33 | fun startFilterActivity(view: View) { 34 | startActivity(Intent(this@OperatorsActivity, FilterExampleActivity::class.java)) 35 | } 36 | 37 | fun startConcatActivity(view: View) { 38 | startActivity(Intent(this@OperatorsActivity, ConcatExampleActivity::class.java)) 39 | } 40 | 41 | fun startMergeActivity(view: View) { 42 | startActivity(Intent(this@OperatorsActivity, MergeExampleActivity::class.java)) 43 | } 44 | 45 | fun startDelayActivity(view: View) { 46 | startActivity(Intent(this@OperatorsActivity, DelayExampleActivity::class.java)) 47 | } 48 | 49 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/SelectionActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui 2 | 3 | import android.content.Intent 4 | import android.os.Bundle 5 | import android.view.View 6 | import androidx.appcompat.app.AppCompatActivity 7 | import com.mindorks.rxjava3.android.examples.R 8 | import com.mindorks.rxjava3.android.examples.ui.search.SearchActivity 9 | 10 | class SelectionActivity : AppCompatActivity() { 11 | 12 | override fun onCreate(savedInstanceState: Bundle?) { 13 | super.onCreate(savedInstanceState) 14 | setContentView(R.layout.activity_selection) 15 | } 16 | 17 | fun startOperatorsActivity(view: View) { 18 | startActivity(Intent(this@SelectionActivity, OperatorsActivity::class.java)) 19 | } 20 | 21 | fun startSearchActivity(view: View) { 22 | startActivity(Intent(this@SelectionActivity, SearchActivity::class.java)) 23 | } 24 | 25 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/operators/ConcatExampleActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui.operators 2 | 3 | import android.os.Bundle 4 | import android.util.Log 5 | import android.widget.Button 6 | import android.widget.TextView 7 | import androidx.appcompat.app.AppCompatActivity 8 | import com.mindorks.rxjava3.android.examples.R 9 | import com.mindorks.rxjava3.android.examples.utils.AppConstant 10 | import io.reactivex.rxjava3.core.Observable 11 | import io.reactivex.rxjava3.core.Observer 12 | import io.reactivex.rxjava3.disposables.Disposable 13 | 14 | class ConcatExampleActivity : AppCompatActivity() { 15 | 16 | companion object { 17 | private const val TAG = "ConcatExampleActivity" 18 | } 19 | 20 | private lateinit var btn: Button 21 | private lateinit var textView: TextView 22 | 23 | override fun onCreate(savedInstanceState: Bundle?) { 24 | super.onCreate(savedInstanceState) 25 | setContentView(R.layout.activity_example) 26 | btn = findViewById(R.id.btn) 27 | textView = findViewById(R.id.textView) 28 | btn.setOnClickListener { 29 | doSomeWork() 30 | } 31 | } 32 | 33 | /* 34 | * Using concat operator to combine Observable : concat maintain 35 | * the order of Observable. 36 | * It will emit all the 7 values in order 37 | * here - first "A1", "A2", "A3", "A4" and then "B1", "B2", "B3" 38 | * first all from the first Observable and then 39 | * all from the second Observable all in order 40 | */ 41 | private fun doSomeWork() { 42 | val observableA = Observable.fromArray("A1", "A2", "A3", "A4") 43 | val observableB = Observable.fromArray("B1", "B2", "B3", "B4") 44 | 45 | Observable.concat(observableA, observableB) 46 | .subscribe(getObserver()) 47 | } 48 | 49 | private fun getObserver(): Observer { 50 | return object : Observer { 51 | 52 | override fun onSubscribe(d: Disposable) { 53 | Log.d(TAG, " onSubscribe : " + d.isDisposed) 54 | } 55 | 56 | override fun onNext(value: String) { 57 | textView.append(" onNext : value : $value") 58 | textView.append(AppConstant.LINE_SEPARATOR) 59 | Log.d(TAG, " onNext : value : $value") 60 | } 61 | 62 | override fun onError(e: Throwable) { 63 | textView.append(" onError : " + e.message) 64 | textView.append(AppConstant.LINE_SEPARATOR) 65 | Log.d(TAG, " onError : " + e.message) 66 | } 67 | 68 | override fun onComplete() { 69 | textView.append(" onComplete") 70 | textView.append(AppConstant.LINE_SEPARATOR) 71 | Log.d(TAG, " onComplete") 72 | } 73 | } 74 | } 75 | 76 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/operators/DelayExampleActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui.operators 2 | 3 | import android.os.Bundle 4 | import android.util.Log 5 | import android.widget.Button 6 | import android.widget.TextView 7 | import androidx.appcompat.app.AppCompatActivity 8 | import com.mindorks.rxjava3.android.examples.R 9 | import com.mindorks.rxjava3.android.examples.utils.AppConstant 10 | import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers 11 | import io.reactivex.rxjava3.core.Observable 12 | import io.reactivex.rxjava3.core.Observer 13 | import io.reactivex.rxjava3.disposables.Disposable 14 | import io.reactivex.rxjava3.schedulers.Schedulers 15 | import java.util.concurrent.TimeUnit 16 | 17 | 18 | class DelayExampleActivity : AppCompatActivity() { 19 | 20 | companion object { 21 | private const val TAG = "DelayExampleActivity" 22 | } 23 | 24 | private lateinit var btn: Button 25 | private lateinit var textView: TextView 26 | 27 | override fun onCreate(savedInstanceState: Bundle?) { 28 | super.onCreate(savedInstanceState) 29 | setContentView(R.layout.activity_example) 30 | btn = findViewById(R.id.btn) 31 | textView = findViewById(R.id.textView) 32 | 33 | btn.setOnClickListener { 34 | doSomeWork() 35 | } 36 | } 37 | 38 | /* 39 | * simple example using delay to emit after 2 second 40 | */ 41 | private fun doSomeWork() { 42 | getObservable() 43 | .delay(2, TimeUnit.SECONDS) 44 | // Run on a background thread 45 | .subscribeOn(Schedulers.io()) 46 | // Be notified on the main thread 47 | .observeOn(AndroidSchedulers.mainThread()) 48 | .subscribe(getObserver()) 49 | } 50 | 51 | 52 | private fun getObservable(): Observable { 53 | return Observable.just("Amit") 54 | } 55 | 56 | private fun getObserver(): Observer { 57 | return object : Observer { 58 | 59 | override fun onSubscribe(d: Disposable) { 60 | Log.d(TAG, " onSubscribe : " + d.isDisposed) 61 | } 62 | 63 | override fun onNext(value: String) { 64 | textView.append(" onNext : value : $value") 65 | textView.append(AppConstant.LINE_SEPARATOR) 66 | Log.d(TAG, " onNext : value : $value") 67 | } 68 | 69 | override fun onError(e: Throwable) { 70 | textView.append(" onError : " + e.message) 71 | textView.append(AppConstant.LINE_SEPARATOR) 72 | Log.d(TAG, " onError : " + e.message) 73 | } 74 | 75 | override fun onComplete() { 76 | textView.append(" onComplete") 77 | textView.append(AppConstant.LINE_SEPARATOR) 78 | Log.d(TAG, " onComplete") 79 | } 80 | } 81 | } 82 | 83 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/operators/FilterExampleActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui.operators 2 | 3 | import android.os.Bundle 4 | import android.util.Log 5 | import android.widget.Button 6 | import android.widget.TextView 7 | import androidx.appcompat.app.AppCompatActivity 8 | import com.mindorks.rxjava3.android.examples.R 9 | import com.mindorks.rxjava3.android.examples.utils.AppConstant 10 | import io.reactivex.rxjava3.core.Observable 11 | import io.reactivex.rxjava3.core.Observer 12 | import io.reactivex.rxjava3.disposables.Disposable 13 | 14 | 15 | class FilterExampleActivity : AppCompatActivity() { 16 | 17 | companion object { 18 | private const val TAG = "FilterExampleActivity" 19 | } 20 | 21 | private lateinit var btn: Button 22 | private lateinit var textView: TextView 23 | 24 | 25 | override fun onCreate(savedInstanceState: Bundle?) { 26 | super.onCreate(savedInstanceState) 27 | setContentView(R.layout.activity_example) 28 | btn = findViewById(R.id.btn) 29 | textView = findViewById(R.id.textView) 30 | 31 | btn.setOnClickListener { 32 | doSomeWork() 33 | } 34 | } 35 | 36 | /* 37 | * simple example by using filter operator to emit only even value 38 | * 39 | */ 40 | private fun doSomeWork() { 41 | Observable.just(1, 2, 3, 4, 5, 6) 42 | .filter { value -> 43 | return@filter value % 2 == 0 44 | } 45 | .subscribe(getObserver()) 46 | } 47 | 48 | private fun getObserver(): Observer { 49 | return object : Observer { 50 | 51 | override fun onSubscribe(d: Disposable) { 52 | Log.d(TAG, " onSubscribe : " + d.isDisposed) 53 | } 54 | 55 | override fun onNext(value: Int) { 56 | textView.append(" onNext : ") 57 | textView.append(AppConstant.LINE_SEPARATOR) 58 | textView.append(" value : $value") 59 | textView.append(AppConstant.LINE_SEPARATOR) 60 | Log.d(TAG, " onNext ") 61 | Log.d(TAG, " value : $value") 62 | } 63 | 64 | override fun onError(e: Throwable) { 65 | textView.append(" onError : " + e.message) 66 | textView.append(AppConstant.LINE_SEPARATOR) 67 | Log.d(TAG, " onError : " + e.message) 68 | } 69 | 70 | override fun onComplete() { 71 | textView.append(" onComplete") 72 | textView.append(AppConstant.LINE_SEPARATOR) 73 | Log.d(TAG, " onComplete") 74 | } 75 | } 76 | } 77 | 78 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/operators/MapExampleActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui.operators 2 | 3 | import android.os.Bundle 4 | import android.util.Log 5 | import android.widget.Button 6 | import android.widget.TextView 7 | import androidx.appcompat.app.AppCompatActivity 8 | import com.mindorks.rxjava3.android.examples.R 9 | import com.mindorks.rxjava3.android.examples.model.ApiUser 10 | import com.mindorks.rxjava3.android.examples.model.User 11 | import com.mindorks.rxjava3.android.examples.utils.AppConstant 12 | import com.mindorks.rxjava3.android.examples.utils.Utils 13 | import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers 14 | import io.reactivex.rxjava3.core.Observable 15 | import io.reactivex.rxjava3.core.Observer 16 | import io.reactivex.rxjava3.disposables.Disposable 17 | import io.reactivex.rxjava3.schedulers.Schedulers 18 | 19 | class MapExampleActivity : AppCompatActivity() { 20 | 21 | companion object { 22 | private const val TAG = "MapExampleActivity" 23 | } 24 | 25 | private lateinit var btn: Button 26 | private lateinit var textView: TextView 27 | 28 | override fun onCreate(savedInstanceState: Bundle?) { 29 | super.onCreate(savedInstanceState) 30 | setContentView(R.layout.activity_example) 31 | btn = findViewById(R.id.btn) 32 | textView = findViewById(R.id.textView) 33 | 34 | btn.setOnClickListener { 35 | doSomeWork() 36 | } 37 | } 38 | 39 | /* 40 | * Here we are getting ApiUser Object from api server 41 | * then we are converting it into User Object because 42 | * may be our database support User Not ApiUser Object 43 | * Here we are using Map Operator to do that 44 | */ 45 | private fun doSomeWork() { 46 | getObservable() 47 | // Run on a background thread 48 | .subscribeOn(Schedulers.io()) 49 | // Be notified on the main thread 50 | .observeOn(AndroidSchedulers.mainThread()) 51 | .map { apiUsers -> 52 | return@map Utils.convertApiUserListToUserList(apiUsers) 53 | } 54 | .subscribe(getObserver()) 55 | } 56 | 57 | private fun getObservable(): Observable> { 58 | return Observable.create { e -> 59 | if (!e.isDisposed) { 60 | e.onNext(Utils.getApiUserList()) 61 | e.onComplete() 62 | } 63 | } 64 | } 65 | 66 | private fun getObserver(): Observer> { 67 | return object : Observer> { 68 | 69 | override fun onSubscribe(d: Disposable) { 70 | Log.d(TAG, " onSubscribe : " + d.isDisposed) 71 | } 72 | 73 | override fun onNext(userList: List) { 74 | textView.append(" onNext") 75 | textView.append(AppConstant.LINE_SEPARATOR) 76 | for (user in userList) { 77 | textView.append(" firstname : ${user.firstname}") 78 | textView.append(AppConstant.LINE_SEPARATOR) 79 | } 80 | Log.d(TAG, " onNext : " + userList.size) 81 | } 82 | 83 | override fun onError(e: Throwable) { 84 | textView.append(" onError : " + e.message) 85 | textView.append(AppConstant.LINE_SEPARATOR) 86 | Log.d(TAG, " onError : " + e.message) 87 | } 88 | 89 | override fun onComplete() { 90 | textView.append(" onComplete") 91 | textView.append(AppConstant.LINE_SEPARATOR) 92 | Log.d(TAG, " onComplete") 93 | } 94 | } 95 | } 96 | 97 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/operators/MergeExampleActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui.operators 2 | 3 | import android.os.Bundle 4 | import android.util.Log 5 | import android.widget.Button 6 | import android.widget.TextView 7 | import androidx.appcompat.app.AppCompatActivity 8 | import com.mindorks.rxjava3.android.examples.R 9 | import com.mindorks.rxjava3.android.examples.utils.AppConstant 10 | import io.reactivex.rxjava3.core.Observable 11 | import io.reactivex.rxjava3.core.Observer 12 | import io.reactivex.rxjava3.disposables.Disposable 13 | 14 | class MergeExampleActivity : AppCompatActivity() { 15 | 16 | companion object { 17 | private const val TAG = "MergeExampleActivity" 18 | } 19 | 20 | private lateinit var btn: Button 21 | private lateinit var textView: TextView 22 | 23 | override fun onCreate(savedInstanceState: Bundle?) { 24 | super.onCreate(savedInstanceState) 25 | setContentView(R.layout.activity_example) 26 | btn = findViewById(R.id.btn) 27 | textView = findViewById(R.id.textView) 28 | 29 | btn.setOnClickListener { 30 | doSomeWork() 31 | } 32 | } 33 | 34 | /* 35 | * Using merge operator to combine Observable : merge does not maintain 36 | * the order of Observable. 37 | * It will emit all the 7 values may not be in order 38 | * Ex - "A1", "B1", "A2", "A3", "A4", "B2", "B3" - may be anything 39 | */ 40 | private fun doSomeWork() { 41 | val observableA = Observable.fromArray("A1", "A2", "A3", "A4") 42 | val observableB = Observable.fromArray("B1", "B2", "B3", "B4") 43 | 44 | Observable.merge(observableA, observableB) 45 | .subscribe(getObserver()) 46 | } 47 | 48 | private fun getObserver(): Observer { 49 | return object : Observer { 50 | 51 | override fun onSubscribe(d: Disposable) { 52 | Log.d(TAG, " onSubscribe : " + d.isDisposed) 53 | } 54 | 55 | override fun onNext(value: String) { 56 | textView.append(" onNext : value : $value") 57 | textView.append(AppConstant.LINE_SEPARATOR) 58 | Log.d(TAG, " onNext : value : $value") 59 | } 60 | 61 | override fun onError(e: Throwable) { 62 | textView.append(" onError : " + e.message) 63 | textView.append(AppConstant.LINE_SEPARATOR) 64 | Log.d(TAG, " onError : " + e.message) 65 | } 66 | 67 | override fun onComplete() { 68 | textView.append(" onComplete") 69 | textView.append(AppConstant.LINE_SEPARATOR) 70 | Log.d(TAG, " onComplete") 71 | } 72 | } 73 | } 74 | 75 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/operators/SimpleExampleActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui.operators 2 | 3 | import android.os.Bundle 4 | import android.util.Log 5 | import android.widget.Button 6 | import android.widget.TextView 7 | import androidx.appcompat.app.AppCompatActivity 8 | import com.mindorks.rxjava3.android.examples.R 9 | import com.mindorks.rxjava3.android.examples.utils.AppConstant 10 | import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers 11 | import io.reactivex.rxjava3.core.Observable 12 | import io.reactivex.rxjava3.core.Observer 13 | import io.reactivex.rxjava3.disposables.Disposable 14 | import io.reactivex.rxjava3.schedulers.Schedulers 15 | 16 | class SimpleExampleActivity : AppCompatActivity() { 17 | 18 | companion object { 19 | private const val TAG = "SimpleExampleActivity" 20 | } 21 | 22 | private lateinit var btn: Button 23 | private lateinit var textView: TextView 24 | 25 | override fun onCreate(savedInstanceState: Bundle?) { 26 | super.onCreate(savedInstanceState) 27 | setContentView(R.layout.activity_example) 28 | btn = findViewById(R.id.btn) 29 | textView = findViewById(R.id.textView) 30 | 31 | btn.setOnClickListener { 32 | doSomeWork() 33 | } 34 | } 35 | 36 | /* 37 | * simple example to emit two value one by one 38 | */ 39 | private fun doSomeWork() { 40 | getObservable() 41 | // Run on a background thread 42 | .subscribeOn(Schedulers.io()) 43 | // Be notified on the main thread 44 | .observeOn(AndroidSchedulers.mainThread()) 45 | .subscribe(getObserver()) 46 | } 47 | 48 | private fun getObservable(): Observable { 49 | return Observable.just("Cricket", "Football") 50 | } 51 | 52 | private fun getObserver(): Observer { 53 | return object : Observer { 54 | 55 | override fun onSubscribe(d: Disposable) { 56 | Log.d(TAG, " onSubscribe : " + d.isDisposed) 57 | } 58 | 59 | override fun onNext(value: String) { 60 | textView.append(" onNext : value : $value") 61 | textView.append(AppConstant.LINE_SEPARATOR) 62 | Log.d(TAG, " onNext : value : $value") 63 | } 64 | 65 | override fun onError(e: Throwable) { 66 | textView.append(" onError : " + e.message) 67 | textView.append(AppConstant.LINE_SEPARATOR) 68 | Log.d(TAG, " onError : " + e.message) 69 | } 70 | 71 | override fun onComplete() { 72 | textView.append(" onComplete") 73 | textView.append(AppConstant.LINE_SEPARATOR) 74 | Log.d(TAG, " onComplete") 75 | } 76 | } 77 | } 78 | 79 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/operators/TimerExampleActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui.operators 2 | 3 | import android.os.Bundle 4 | import android.util.Log 5 | import android.widget.Button 6 | import android.widget.TextView 7 | import androidx.appcompat.app.AppCompatActivity 8 | import com.mindorks.rxjava3.android.examples.R 9 | import com.mindorks.rxjava3.android.examples.utils.AppConstant 10 | import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers 11 | import io.reactivex.rxjava3.core.Observable 12 | import io.reactivex.rxjava3.core.Observer 13 | import io.reactivex.rxjava3.disposables.Disposable 14 | import io.reactivex.rxjava3.schedulers.Schedulers 15 | import java.util.concurrent.TimeUnit 16 | 17 | class TimerExampleActivity : AppCompatActivity() { 18 | 19 | companion object { 20 | private const val TAG = "TimerExampleActivity" 21 | } 22 | 23 | private lateinit var btn: Button 24 | private lateinit var textView: TextView 25 | 26 | override fun onCreate(savedInstanceState: Bundle?) { 27 | super.onCreate(savedInstanceState) 28 | setContentView(R.layout.activity_example) 29 | btn = findViewById(R.id.btn) 30 | textView = findViewById(R.id.textView) 31 | 32 | btn.setOnClickListener { 33 | doSomeWork() 34 | } 35 | } 36 | 37 | /* 38 | * simple example using timer to do something after 2 seconds 39 | */ 40 | private fun doSomeWork() { 41 | getObservable() 42 | // Run on a background thread 43 | .subscribeOn(Schedulers.io()) 44 | // Be notified on the main thread 45 | .observeOn(AndroidSchedulers.mainThread()) 46 | .subscribe(getObserver()) 47 | } 48 | 49 | private fun getObservable(): Observable { 50 | return Observable.timer(2, TimeUnit.SECONDS) 51 | } 52 | 53 | private fun getObserver(): Observer { 54 | return object : Observer { 55 | 56 | override fun onSubscribe(d: Disposable) { 57 | Log.d(TAG, " onSubscribe : " + d.isDisposed) 58 | } 59 | 60 | override fun onNext(value: Long) { 61 | textView.append(" onNext : value : $value") 62 | textView.append(AppConstant.LINE_SEPARATOR) 63 | Log.d(TAG, " onNext : value : $value") 64 | } 65 | 66 | override fun onError(e: Throwable) { 67 | textView.append(" onError : " + e.message) 68 | textView.append(AppConstant.LINE_SEPARATOR) 69 | Log.d(TAG, " onError : " + e.message) 70 | } 71 | 72 | override fun onComplete() { 73 | textView.append(" onComplete") 74 | textView.append(AppConstant.LINE_SEPARATOR) 75 | Log.d(TAG, " onComplete") 76 | } 77 | } 78 | } 79 | 80 | 81 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/operators/ZipExampleActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui.operators 2 | 3 | import android.os.Bundle 4 | import android.util.Log 5 | import android.widget.Button 6 | import android.widget.TextView 7 | import androidx.appcompat.app.AppCompatActivity 8 | import com.mindorks.rxjava3.android.examples.R 9 | import com.mindorks.rxjava3.android.examples.model.User 10 | import com.mindorks.rxjava3.android.examples.utils.AppConstant 11 | import com.mindorks.rxjava3.android.examples.utils.Utils 12 | import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers 13 | import io.reactivex.rxjava3.core.Observable 14 | import io.reactivex.rxjava3.core.ObservableOnSubscribe 15 | import io.reactivex.rxjava3.core.Observer 16 | import io.reactivex.rxjava3.disposables.Disposable 17 | import io.reactivex.rxjava3.functions.BiFunction 18 | import io.reactivex.rxjava3.schedulers.Schedulers 19 | 20 | class ZipExampleActivity : AppCompatActivity() { 21 | 22 | companion object { 23 | private const val TAG = "ZipExampleActivity" 24 | } 25 | 26 | private lateinit var btn: Button 27 | private lateinit var textView: TextView 28 | 29 | override fun onCreate(savedInstanceState: Bundle?) { 30 | super.onCreate(savedInstanceState) 31 | setContentView(R.layout.activity_example) 32 | btn = findViewById(R.id.btn) 33 | textView = findViewById(R.id.textView) 34 | 35 | btn.setOnClickListener { 36 | doSomeWork() 37 | } 38 | } 39 | 40 | /* 41 | * Here we are getting two user list 42 | * One, the list of cricket fans 43 | * Another one, the list of football fans 44 | * Then we are finding the list of users who loves both 45 | */ 46 | private fun doSomeWork() { 47 | Observable.zip(getCricketFansObservable(), getFootballFansObservable(), 48 | BiFunction, List, List> { cricketFans, footballFans -> 49 | return@BiFunction Utils.filterUserWhoLovesBoth(cricketFans, footballFans) 50 | }) 51 | // Run on a background thread 52 | .subscribeOn(Schedulers.io()) 53 | // Be notified on the main thread 54 | .observeOn(AndroidSchedulers.mainThread()) 55 | .subscribe(getObserver()) 56 | } 57 | 58 | private fun getCricketFansObservable(): Observable> { 59 | return Observable.create(ObservableOnSubscribe> { e -> 60 | if (!e.isDisposed) { 61 | e.onNext(Utils.getUserListWhoLovesCricket()) 62 | e.onComplete() 63 | } 64 | }).subscribeOn(Schedulers.io()) 65 | } 66 | 67 | private fun getFootballFansObservable(): Observable> { 68 | return Observable.create(ObservableOnSubscribe> { e -> 69 | if (!e.isDisposed) { 70 | e.onNext(Utils.getUserListWhoLovesFootball()) 71 | e.onComplete() 72 | } 73 | }).subscribeOn(Schedulers.io()) 74 | } 75 | 76 | private fun getObserver(): Observer> { 77 | return object : Observer> { 78 | 79 | override fun onSubscribe(d: Disposable) { 80 | Log.d(TAG, " onSubscribe : " + d.isDisposed) 81 | } 82 | 83 | override fun onNext(userList: List) { 84 | textView.append(" onNext") 85 | textView.append(AppConstant.LINE_SEPARATOR) 86 | for (user in userList) { 87 | textView.append(" firstname : ${user.firstname}") 88 | textView.append(AppConstant.LINE_SEPARATOR) 89 | } 90 | Log.d(TAG, " onNext : " + userList.size) 91 | } 92 | 93 | override fun onError(e: Throwable) { 94 | textView.append(" onError : " + e.message) 95 | textView.append(AppConstant.LINE_SEPARATOR) 96 | Log.d(TAG, " onError : " + e.message) 97 | } 98 | 99 | override fun onComplete() { 100 | textView.append(" onComplete") 101 | textView.append(AppConstant.LINE_SEPARATOR) 102 | Log.d(TAG, " onComplete") 103 | } 104 | } 105 | } 106 | 107 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/ui/search/SearchActivity.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.ui.search 2 | 3 | import android.annotation.SuppressLint 4 | import android.os.Bundle 5 | import android.widget.SearchView 6 | import android.widget.TextView 7 | import androidx.appcompat.app.AppCompatActivity 8 | import com.mindorks.rxjava3.android.examples.R 9 | import com.mindorks.rxjava3.android.examples.utils.getQueryTextChangeObservable 10 | import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers 11 | import io.reactivex.rxjava3.core.Observable 12 | import io.reactivex.rxjava3.schedulers.Schedulers 13 | import java.util.concurrent.TimeUnit 14 | 15 | @SuppressLint("CheckResult") 16 | class SearchActivity : AppCompatActivity() { 17 | 18 | companion object { 19 | const val TAG = "SearchActivity" 20 | } 21 | 22 | private lateinit var searchView: SearchView 23 | private lateinit var textViewResult: TextView 24 | 25 | override fun onCreate(savedInstanceState: Bundle?) { 26 | super.onCreate(savedInstanceState) 27 | setContentView(R.layout.activity_search) 28 | searchView = findViewById(R.id.searchView) 29 | textViewResult = findViewById(R.id.textViewResult) 30 | setUpSearchObservable() 31 | } 32 | 33 | private fun setUpSearchObservable() { 34 | searchView.getQueryTextChangeObservable() 35 | .debounce(300, TimeUnit.MILLISECONDS) 36 | .filter { text -> 37 | if (text.isEmpty()) { 38 | textViewResult.text = "" 39 | return@filter false 40 | } else { 41 | return@filter true 42 | } 43 | } 44 | .distinctUntilChanged() 45 | .switchMap { query -> 46 | dataFromNetwork(query) 47 | .doOnError { 48 | // handle error 49 | } 50 | .onErrorReturn { "" } 51 | } 52 | .subscribeOn(Schedulers.io()) 53 | .observeOn(AndroidSchedulers.mainThread()) 54 | .subscribe { result -> 55 | textViewResult.text = result 56 | } 57 | } 58 | 59 | /** 60 | * Simulation of network data 61 | */ 62 | private fun dataFromNetwork(query: String): Observable { 63 | return Observable.just(true) 64 | .delay(2, TimeUnit.SECONDS) 65 | .map { 66 | query 67 | } 68 | } 69 | 70 | } 71 | -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/utils/AppConstant.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.utils 2 | 3 | object AppConstant { 4 | 5 | const val LINE_SEPARATOR = "\n" 6 | 7 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/utils/Extensions.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.utils 2 | 3 | import android.widget.SearchView 4 | import io.reactivex.rxjava3.core.Observable 5 | import io.reactivex.rxjava3.subjects.PublishSubject 6 | 7 | fun SearchView.getQueryTextChangeObservable(): Observable { 8 | 9 | val subject = PublishSubject.create() 10 | 11 | setOnQueryTextListener(object : SearchView.OnQueryTextListener { 12 | override fun onQueryTextSubmit(query: String?): Boolean { 13 | subject.onComplete() 14 | return true 15 | } 16 | 17 | override fun onQueryTextChange(newText: String): Boolean { 18 | subject.onNext(newText) 19 | return true 20 | } 21 | }) 22 | 23 | return subject 24 | 25 | } -------------------------------------------------------------------------------- /app/src/main/java/com/mindorks/rxjava3/android/examples/utils/Utils.kt: -------------------------------------------------------------------------------- 1 | package com.mindorks.rxjava3.android.examples.utils 2 | 3 | import com.mindorks.rxjava3.android.examples.model.ApiUser 4 | import com.mindorks.rxjava3.android.examples.model.User 5 | import java.util.* 6 | 7 | object Utils { 8 | 9 | fun getApiUserList(): List { 10 | 11 | val apiUserList = ArrayList() 12 | 13 | val apiUserOne = ApiUser(firstname = "Amit", lastname = "Shekhar") 14 | apiUserList.add(apiUserOne) 15 | 16 | val apiUserTwo = ApiUser(firstname = "Janishar", lastname = "Ali") 17 | apiUserList.add(apiUserTwo) 18 | 19 | val apiUserThree = ApiUser(firstname = "Anand", lastname = "Gaurav") 20 | apiUserList.add(apiUserThree) 21 | 22 | return apiUserList 23 | } 24 | 25 | 26 | fun getUserListWhoLovesCricket(): List { 27 | 28 | val userList = ArrayList() 29 | 30 | val userOne = User(id = 1, firstname = "Amit", lastname = "Shekhar") 31 | userList.add(userOne) 32 | 33 | val userTwo = User(id = 2, firstname = "Janishar", lastname = "Ali") 34 | userList.add(userTwo) 35 | 36 | return userList 37 | } 38 | 39 | 40 | fun getUserListWhoLovesFootball(): List { 41 | 42 | val userList = ArrayList() 43 | 44 | val userOne = User(id = 1, firstname = "Amit", lastname = "Shekhar") 45 | userList.add(userOne) 46 | 47 | val userTwo = User(id = 3, firstname = "Janishar", lastname = "Ali") 48 | userList.add(userTwo) 49 | 50 | return userList 51 | } 52 | 53 | fun convertApiUserListToUserList(apiUserList: List): List { 54 | 55 | val userList = ArrayList() 56 | 57 | for (apiUser in apiUserList) { 58 | val user = User(apiUser.id, apiUser.firstname, apiUser.lastname) 59 | userList.add(user) 60 | } 61 | 62 | return userList 63 | } 64 | 65 | fun filterUserWhoLovesBoth(cricketFans: List, footballFans: List): List { 66 | val userWhoLovesBoth = ArrayList() 67 | 68 | for (footballFan in footballFans) { 69 | if (cricketFans.contains(footballFan)) { 70 | userWhoLovesBoth.add(footballFan) 71 | } 72 | } 73 | 74 | return userWhoLovesBoth 75 | } 76 | 77 | } 78 | -------------------------------------------------------------------------------- /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 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | 66 | 68 | 70 | 72 | 74 | 75 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_example.xml: -------------------------------------------------------------------------------- 1 | 2 | 10 | 11 |