new tutorials

T31-Load/ToDo/.gitignore

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

T31-Load/ToDo/app/.gitignore

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+/build

T31-Load/ToDo/app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+  compileSdkVersion 27
+  defaultConfig {
+    applicationId "com.commonsware.todo"
+    minSdkVersion 21
+    targetSdkVersion 27
+    versionCode 1
+    versionName "1.0"
+    testApplicationId "com.commonsware.todo.test"
+    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+  }
+  buildTypes {
+    release {
+      minifyEnabled false
+      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+    }
+  }
+  compileOptions {
+    sourceCompatibility JavaVersion.VERSION_1_8
+    targetCompatibility JavaVersion.VERSION_1_8
+  }
+  dataBinding {
+    enabled=true
+  }
+}
+
+def supportVer="27.1.1"
+def autoValueVer="1.5.1"
+def archVer="1.1.1"
+def roomVer="1.1.0"
+
+dependencies {
+  implementation "com.android.support:recyclerview-v7:$supportVer"
+  implementation "com.android.support:support-fragment:$supportVer"
+  implementation "android.arch.lifecycle:extensions:$archVer"
+  implementation "android.arch.lifecycle:reactivestreams:$archVer"
+  implementation 'com.android.support.constraint:constraint-layout:1.1.0'
+  implementation "io.reactivex.rxjava2:rxjava:2.1.7"
+  implementation "android.arch.persistence.room:runtime:$roomVer"
+  implementation "android.arch.persistence.room:rxjava2:$roomVer"
+  annotationProcessor "android.arch.persistence.room:compiler:$roomVer"
+  compileOnly "com.google.auto.value:auto-value:$autoValueVer"
+  annotationProcessor "com.google.auto.value:auto-value:$autoValueVer"
+  testImplementation 'junit:junit:4.12'
+  androidTestImplementation 'com.android.support.test:runner:1.0.2'
+  androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}

T31-Load/ToDo/app/proguard-rules.pro

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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

T31-Load/ToDo/app/src/androidTest/java/com/commonsware/todo/ControllerTest.java

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+package com.commonsware.todo;
+
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+import io.reactivex.subjects.PublishSubject;
+import static org.junit.Assert.assertEquals;
+
+@RunWith(AndroidJUnit4.class)
+public class ControllerTest {
+  @Before
+  public void setUp() {
+    ToDoDatabase db=ToDoDatabase.get(InstrumentationRegistry.getTargetContext());
+
+    db.todoStore().deleteAll();
+  }
+
+  @Test
+  public void controller() throws InterruptedException {
+    final Controller controller=new Controller(InstrumentationRegistry.getTargetContext());
+    final PublishSubject<Action> actionSubject=PublishSubject.create();
+    final LinkedBlockingQueue<Result> receivedResults=new LinkedBlockingQueue<>();
+
+    controller.subscribeToActions(actionSubject);
+    controller.resultStream().subscribe(receivedResults::offer);
+
+    actionSubject.onNext(Action.load());
+
+    Result.Loaded resultLoaded=
+      (Result.Loaded)receivedResults.poll(1, TimeUnit.SECONDS);
+
+    assertEquals(0, resultLoaded.models().size());
+
+    final ToDoModel fooModel=ToDoModel.creator().description("foo").notes("hello, world!").build();
+
+    actionSubject.onNext(Action.add(fooModel));
+
+    Result.Added resultAdded=
+      (Result.Added)receivedResults.poll(1, TimeUnit.SECONDS);
+
+    assertEquals(fooModel, resultAdded.model());
+
+    final ToDoModel barModel=ToDoModel.creator().description("bar").build();
+    actionSubject.onNext(Action.add(barModel));
+    resultAdded=
+      (Result.Added)receivedResults.poll(1, TimeUnit.SECONDS);
+    assertEquals(barModel, resultAdded.model());
+
+    final ToDoModel gooModel=ToDoModel.creator()
+      .description("goo")
+      .isCompleted(true)
+      .build();
+    actionSubject.onNext(Action.add(gooModel));
+    resultAdded=
+      (Result.Added)receivedResults.poll(1, TimeUnit.SECONDS);
+    assertEquals(gooModel, resultAdded.model());
+
+    final ToDoModel mutatedFoo=fooModel.toBuilder().isCompleted(true).build();
+    actionSubject.onNext(Action.edit(mutatedFoo));
+
+    Result.Modified resultModified=
+      (Result.Modified)receivedResults.poll(1, TimeUnit.SECONDS);
+
+    assertEquals(mutatedFoo, resultModified.model());
+
+    final ToDoModel mutatedBar=barModel.toBuilder().description("bar!").notes("hi!").build();
+    actionSubject.onNext(Action.edit(mutatedBar));
+    resultModified=
+      (Result.Modified)receivedResults.poll(1, TimeUnit.SECONDS);
+    assertEquals(mutatedBar, resultModified.model());
+
+    final ToDoModel mutatedGoo=gooModel.toBuilder()
+      .description("goo!")
+      .isCompleted(false)
+      .build();
+    actionSubject.onNext(Action.edit(mutatedGoo));
+    resultModified=
+      (Result.Modified)receivedResults.poll(1, TimeUnit.SECONDS);
+    assertEquals(mutatedGoo, resultModified.model());
+
+    actionSubject.onNext(Action.delete(barModel));
+
+    Result.Deleted resultDeleted=
+      (Result.Deleted)receivedResults.poll(1, TimeUnit.SECONDS);
+
+    assertEquals(barModel, resultDeleted.model());
+
+    actionSubject.onNext(Action.delete(fooModel));
+    resultDeleted=
+      (Result.Deleted)receivedResults.poll(1, TimeUnit.SECONDS);
+    assertEquals(fooModel, resultDeleted.model());
+
+    actionSubject.onNext(Action.delete(gooModel));
+    resultDeleted=
+      (Result.Deleted)receivedResults.poll(1, TimeUnit.SECONDS);
+    assertEquals(gooModel, resultDeleted.model());
+  }
+}

T31-Load/ToDo/app/src/androidTest/java/com/commonsware/todo/RepoTests.java

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+package com.commonsware.todo;
+
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import java.util.List;
+import static org.hamcrest.Matchers.hasItem;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertThat;
+
+@RunWith(AndroidJUnit4.class)
+public class RepoTests {
+  private ToDoRepository repo;
+
+  @Before
+  public void setUp() {
+    ToDoDatabase db=ToDoDatabase.get(InstrumentationRegistry.getTargetContext());
+
+    db.todoStore().deleteAll();
+    repo=ToDoRepository.get(InstrumentationRegistry.getTargetContext());
+    repo.add(ToDoModel.creator()
+      .description("Buy a copy of _Exploring Android_")
+      .notes("See https://wares.commonsware.com")
+      .isCompleted(true)
+      .build());
+    repo.add(ToDoModel.creator()
+      .description("Complete all of the tutorials")
+      .build());
+    repo.add(ToDoModel.creator()
+      .description("Write an app for somebody in my community")
+      .notes("Talk to some people at non-profit organizations to see what they need!")
+      .build());
+  }
+
+  @Test
+  public void getAll() {
+    assertEquals(3, repo.all().size());
+  }
+
+  @Test
+  public void add() {
+    ToDoModel model=ToDoModel.creator()
+      .isCompleted(true)
+      .description("foo")
+      .build();
+
+    repo.add(model);
+
+    List<ToDoModel> models=repo.all();
+
+    assertEquals(4, models.size());
+    assertThat(models, hasItem(model));
+  }
+
+  @Test
+  public void replace() {
+    ToDoModel original=repo.all().get(1);
+    ToDoModel edited=original.toBuilder()
+      .isCompleted(true)
+      .description("Currently on Tutorial #30")
+      .build();
+
+    repo.replace(edited);
+    assertEquals(3, repo.all().size());
+    assertEquals(edited, repo.all().get(1));
+  }
+
+  @Test
+  public void delete() {
+    assertEquals(3, repo.all().size());
+    repo.delete(repo.all().get(0));
+    assertEquals(2, repo.all().size());
+    repo.delete(repo.all().get(0).toBuilder().build());
+    assertEquals(1, repo.all().size());
+  }
+}

T31-Load/ToDo/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest package="com.commonsware.todo"
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:tools="http://schemas.android.com/tools">
+
+  <supports-screens
+    android:largeScreens="true"
+    android:normalScreens="true"
+    android:smallScreens="true"
+    android:xlargeScreens="true" />
+
+  <application
+    android:name=".ToDoApp"
+    android:allowBackup="false"
+    android:icon="@mipmap/ic_launcher"
+    android:label="@string/app_name"
+    android:roundIcon="@mipmap/ic_launcher_round"
+    android:supportsRtl="true"
+    android:theme="@style/AppTheme"
+    tools:ignore="GoogleAppIndexingWarning">
+    <activity android:name=".MainActivity">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+
+        <category android:name="android.intent.category.LAUNCHER" />
+      </intent-filter>
+    </activity>
+    <activity android:name=".AboutActivity"></activity>
+  </application>
+
+</manifest>

T31-Load/ToDo/app/src/main/assets/about.html

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+<h1>About This App</h1>
+
+<p>This app is cool!</p>
+
+<p>No, really &mdash; this app is awesome!</p>
+
+<div>
+    .
+    <br/>
+    .
+    <br/>
+    .
+    <br/>
+    .
+</div>
+
+<p>OK, this app isn't all that much. But, hey, it's mine!</p>

T31-Load/ToDo/app/src/main/java/com/commonsware/todo/AboutActivity.java

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+package com.commonsware.todo;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+import android.webkit.WebView;
+
+public class AboutActivity extends FragmentActivity {
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    setContentView(R.layout.activity_about);
+
+    WebView wv=findViewById(R.id.about);
+
+    wv.loadUrl("file:///android_asset/about.html");
+  }
+}

T31-Load/ToDo/app/src/main/java/com/commonsware/todo/Action.java

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+package com.commonsware.todo;
+
+import com.google.auto.value.AutoValue;
+
+public abstract class Action {
+  public static Action add(ToDoModel model) {
+    return new AutoValue_Action_Add(model);
+  }
+
+  public static Action edit(ToDoModel model) {
+    return new AutoValue_Action_Edit(model);
+  }
+
+  public static Action delete(ToDoModel model) {
+    return new AutoValue_Action_Delete(model);
+  }
+
+  public static Action show(ToDoModel model) {
+    return new AutoValue_Action_Show(model);
+  }
+
+  public static Action load() {
+    return new Action.Load();
+  }
+
+  @AutoValue
+  public static abstract class Add extends Action {
+    public abstract ToDoModel model();
+  }
+
+  @AutoValue
+  public static abstract class Edit extends Action {
+    public abstract ToDoModel model();
+  }
+
+  @AutoValue
+  public static abstract class Delete extends Action {
+    public abstract ToDoModel model();
+  }
+
+  @AutoValue
+  static abstract class Show extends Action {
+    public abstract ToDoModel current();
+  }
+
+  public static class Load extends Action {
+
+  }
+}