feat: added coroutine adapter example

Author: amanjeetsingh150

CoroutineAdapters/.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+/gradle.properties

CoroutineAdapters/.idea/gradle.xml

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+# CoroutineAdapter
+Coroutines are used to simplify asynchronous programming. They are very light and can be sometimes used in place of RxJava for performing async operations with less code. Coroutine Adapter is a call Adapter around Retrofit for Http calls developed by Jake Wharton.
+<br>
+<b>Docs: </b> https://github.com/JakeWharton/retrofit2-kotlin-coroutines-adapter
+<br><br>
+In this example we asynchronously hit 2 endpoints 1st is from where we get id and 2nd is to get the list of crew. We use coroutine Adapter of retrofit to asynchronously hit the 2 end points. 
+<br><br>
+PS: Coroutines are in a experimental version. They will soon be stable.
+<br><br>
+To integrate the adapter integrate following dependency:
+<br>
+<pre>
+compile 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-experimental-adapter:1.0.0'
+</pre> 
+<br><br>
+Screenshots:
+<br><br>
+<img src="realm.gif"/>

CoroutineAdapters/.idea/misc.xml

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+/build

CoroutineAdapters/.idea/modules.xml

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+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 26
+    defaultConfig {
+        applicationId "com.developers.coroutineadapters"
+        minSdkVersion 19
+        targetSdkVersion 26
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    buildTypes.each {
+        it.buildConfigField('String', "MOVIE_KEY", API_KEY)
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation"org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+    implementation 'com.android.support:appcompat-v7:26.1.0'
+    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.1'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    implementation 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-experimental-adapter:1.0.0'
+    implementation "com.squareup.retrofit2:converter-gson:2.3.0"
+    implementation 'com.android.support:cardview-v7:26.1.0'
+    implementation 'com.android.support:recyclerview-v7:26.1.0'
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:0.21"
+}

CoroutineAdapters/.idea/runConfigurations.xml

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

CoroutineAdapters/README.md

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+package com.developers.coroutineadapters
+
+import android.support.test.InstrumentationRegistry
+import android.support.test.runner.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getTargetContext()
+        assertEquals("com.developers.coroutineadapters", appContext.packageName)
+    }
+}