Android Open Source - Android-DDP Main Activity

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License

The source code is released under:

Apache License

Java Source Code

package im.delight.android.ddp.examples;
//from   w w w  .j av  a 2  s .  c  om
/**
 * Copyright 2014 www.delight.im <info@delight.im>
 *
 * 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.
 */

import java.util.Map;
import java.util.HashMap;
import im.delight.android.ddp.Meteor;
import im.delight.android.ddp.MeteorCallback;
import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity implements MeteorCallback {

  private Meteor mMeteor;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // create a new instance (protocol version in second parameter is optional)
    mMeteor = new Meteor("ws://example.meteor.com/websocket");

    // register the callback that will handle events and receive messages
    mMeteor.setCallback(this);
  }

  @Override
  public void onConnect() {
    System.out.println("Connected");

    // subscribe to data from the server
    String subscriptionId = mMeteor.subscribe("publicMessages");

    // unsubscribe from data again (usually done later or not at all)
    mMeteor.unsubscribe(subscriptionId);

    // insert data into a collection
    Map<String, Object> insertValues = new HashMap<String, Object>();
    insertValues.put("_id", "my-key");
    insertValues.put("some-number", 3);
    mMeteor.insert("my-collection", insertValues);

    // update data in a collection
    Map<String, Object> updateQuery = new HashMap<String, Object>();
    updateQuery.put("_id", "my-key");
    Map<String, Object> updateValues = new HashMap<String, Object>();
    insertValues.put("_id", "my-key");
    insertValues.put("some-number", 5);
    mMeteor.update("my-collection", updateQuery, updateValues);

    // remove data from a collection
    mMeteor.remove("my-collection", "my-key");

    // call an arbitrary method
    mMeteor.call("/my-collection/count");
  }

  @Override
  public void onDisconnect(int code, String reason) {
    System.out.println("Disconnected");
  }

  @Override
  public void onDataAdded(String collectionName, String documentID, String fieldsJson) {
    System.out.println("Data added to <"+collectionName+"> in document <"+documentID+">");
    System.out.println("    Added: "+fieldsJson);
  }

  @Override
  public void onDataChanged(String collectionName, String documentID, String updatedValuesJson, String removedValuesJson) {
    System.out.println("Data changed in <"+collectionName+"> in document <"+documentID+">");
    System.out.println("    Updated: "+updatedValuesJson);
    System.out.println("    Removed: "+removedValuesJson);
  }

  @Override
  public void onDataRemoved(String collectionName, String documentID) {
    System.out.println("Data removed from <"+collectionName+"> in document <"+documentID+">");
  }

  @Override
  public void onException(Exception e) {
    System.out.println("Exception");
    if (e != null) {
      e.printStackTrace();
    }
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
    mMeteor.disconnect();
  }

}

Java Source Code List

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