AndroidScheduler.java

rxjava-contrib/rxjava-android/src/main/java/rx/concurrency/AndroidScheduler.java

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+/**
+ * Copyright 2013 Netflix, Inc.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package rx.concurrency;
+
+import java.util.concurrent.Executor;
+import java.util.concurrent.TimeUnit;
+
+import rx.Scheduler;
+import rx.Subscription;
+import rx.concurrency.ExecutorScheduler;
+import rx.util.AtomicObservableSubscription;
+import rx.util.functions.Func2;
+
+import android.os.Handler;
+import android.os.Looper;
+
+/**
+ * Executes work on the Android UI thread.
+ * This scheduler should only be used to update the ui.
+ */
+public class AndroidScheduler extends Scheduler {
+
+    private static final AndroidScheduler INSTANCE = new AndroidScheduler();
+
+    public static AndroidScheduler getInstance() {
+        return INSTANCE;
+    }
+
+    private AndroidScheduler() {
+    }
+
+    @Override
+    public <T> Subscription schedule(final T state, final Func2<Scheduler, T, Subscription> action) {
+        final AtomicObservableSubscription subscription = new AtomicObservableSubscription();
+        final Scheduler _scheduler = this;
+
+        Handler handler = new Handler(Looper.getMainLooper());
+
+        handler.post(new Runnable() {
+            @Override
+            public void run() {
+                subscription.wrap(action.call(_scheduler, state));
+            }
+        });
+
+        return subscription;
+    }
+
+    @Override
+    public <T> Subscription schedule(T state, Func2<Scheduler, T, Subscription> action, long dueTime, TimeUnit unit) {
+        return null;
+    }
+
+
+}
+