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Java SDK for Contentful's Content Delivery API.

There is a newer version: 9.1.0

package com.contentful.java.cda;

import android.os.Build;
import android.os.Handler;
import android.os.Looper;

import java.util.concurrent.Executor;

abstract class Platform {
  private static final Platform PLATFORM = findPlatform();

  static Platform get() {
    return PLATFORM;
  }

  private static Platform findPlatform() {
    try {
      Class.forName("android.os.Build");
      if (Build.VERSION.SDK_INT != 0) {
        return new Android();
      }
    } catch (ClassNotFoundException ignored) {
    }

    return new Base();
  }

  abstract Executor callbackExecutor();

  /**
   * Provides sane defaults for operation on the JVM.
   */
  private static class Base extends Platform {
    @Override Executor callbackExecutor() {
      return new SynchronousExecutor();
    }
  }

  /**
   * Provides sane defaults for operation on Android.
   */
  private static class Android extends Platform {
    @Override Executor callbackExecutor() {
      return new Executor() {
        private final Handler handler = new Handler(Looper.getMainLooper());

        @Override public void execute(Runnable command) {
          handler.post(command);
        }
      };
    }
  }
}