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WearApplication.java

/*
 * Copyright (C) 2015 Google Inc. All Rights Reserved.
 *
 * 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
 * imitations under the License.
 */

package com.example.android.wearable.wcldemo;

import android.app.Application;

import com.google.android.gms.wearable.DataMap;
import com.google.android.gms.wearable.Node;
import com.google.devrel.wcl.WearManager;
import com.google.devrel.wcl.filters.NearbyFilter;

import com.example.android.wearable.wcldemo.common.Constants;

import java.util.Set;

/**
 * The application instance for the wear app. We need to initialize the {@link WearManager} in the
 * {@link #onCreate()} method of the application instance to make sure it is available before any
 * other component of the application has been instantiated.
 */
public class WearApplication extends Application {

@Override
    public void onCreate() {
        super.onCreate();
        WearManager.initialize(this);
    }

/**
     * A helper method to send a message to the nearby nodes with the information about the pages
     * that are being opened as we navigate through this app. This information is used on the
     * "Data Exchange" demo page.
     */
    public static void sendNavMessage(int page) {
        WearManager wearManager = WearManager.getInstance();
        Set<Node> nodes = wearManager.getConnectedNodes();
        if (nodes == null) {
            return;
        }
        Set<Node> nearbyNodes = new NearbyFilter().filterNodes(nodes);
        DataMap dataMap = new DataMap();
        dataMap.putInt(Constants.KEY_PAGE, page);
        for(Node node : nearbyNodes) {
            wearManager.sendMessage(node.getId(), Constants.NAVIGATION_PATH_WEAR, dataMap, null);
        }
    }

public static void setPage(int page) {
        sendNavMessage(page);
    }
}