Merge pull request #555 from ReactiveX/jakew/java-eight/2019-12-31

Update to RxJava RC7 and Java 8

Author: JakeWharton

build.gradle

@@ -6,7 +6,7 @@ subprojects {
             jcenter()
         }
         dependencies {
-            classpath 'com.android.tools.build:gradle:3.5.0'
+            classpath 'com.android.tools.build:gradle:3.5.3'
             classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
             classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4'
             classpath 'org.jfrog.buildinfo:build-info-extractor-gradle:4.7.5'
@@ -23,5 +23,5 @@ subprojects {
 ext {
     minSdkVersion = 9
     compileSdkVersion = 29
-    sourceCompatibility = JavaVersion.VERSION_1_7
+    sourceCompatibility = JavaVersion.VERSION_1_8
 }

rxandroid/build.gradle

@@ -36,7 +36,7 @@ android {
 }
 
 dependencies {
-    api 'io.reactivex.rxjava3:rxjava:3.0.0-RC3'
+    api 'io.reactivex.rxjava3:rxjava:3.0.0-RC7'
 
     testImplementation 'junit:junit:4.12'
     testImplementation 'org.robolectric:robolectric:3.8'

rxandroid/src/main/java/io/reactivex/rxjava3/android/MainThreadDisposable.java

@@ -72,11 +72,7 @@ public final void dispose() {
             if (Looper.myLooper() == Looper.getMainLooper()) {
                 onDispose();
             } else {
-                AndroidSchedulers.mainThread().scheduleDirect(new Runnable() {
-                    @Override public void run() {
-                        onDispose();
-                    }
-                });
+                AndroidSchedulers.mainThread().scheduleDirect(this::onDispose);
             }
         }
     }

rxandroid/src/main/java/io/reactivex/rxjava3/android/schedulers/AndroidSchedulers.java

@@ -30,12 +30,8 @@ private static final class MainHolder {
             = new HandlerScheduler(new Handler(Looper.getMainLooper()), true);
     }
 
-    private static final Scheduler MAIN_THREAD = RxAndroidPlugins.initMainThreadScheduler(
-            new Callable<Scheduler>() {
-                @Override public Scheduler call() throws Exception {
-                    return MainHolder.DEFAULT;
-                }
-            });
+    private static final Scheduler MAIN_THREAD =
+        RxAndroidPlugins.initMainThreadScheduler(() -> MainHolder.DEFAULT);
 
     /**
      * A {@link Scheduler} which executes actions on the Android main thread.

rxandroid/src/main/java/io/reactivex/rxjava3/android/schedulers/HandlerScheduler.java

@@ -18,7 +18,6 @@
 import android.os.Message;
 import io.reactivex.rxjava3.core.Scheduler;
 import io.reactivex.rxjava3.disposables.Disposable;
-import io.reactivex.rxjava3.disposables.Disposables;
 import io.reactivex.rxjava3.plugins.RxJavaPlugins;
 import java.util.concurrent.TimeUnit;
 
@@ -70,7 +69,7 @@ public Disposable schedule(Runnable run, long delay, TimeUnit unit) {
             if (unit == null) throw new NullPointerException("unit == null");
 
             if (disposed) {
-                return Disposables.disposed();
+                return Disposable.disposed();
             }
 
             run = RxJavaPlugins.onSchedule(run);
@@ -89,7 +88,7 @@ public Disposable schedule(Runnable run, long delay, TimeUnit unit) {
             // Re-check disposed state for removing in case we were racing a call to dispose().
             if (disposed) {
                 handler.removeCallbacks(scheduled);
-                return Disposables.disposed();
+                return Disposable.disposed();
             }
 
             return scheduled;