prebuilts/gradle/DelayedConfirmation/Application/src/main/java/com/example/android/wearable/delayedconfirmation/MainActivity.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * 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 com.example.android.wearable.delayedconfirmation;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.wearable.MessageApi;
import com.google.android.gms.wearable.MessageEvent;
import com.google.android.gms.wearable.Node;
import com.google.android.gms.wearable.NodeApi;
import com.google.android.gms.wearable.Wearable;

/**
 * Has a single button, used to start the Wearable MainActivity.
 */
public class MainActivity extends Activity implements MessageApi.MessageListener,
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {

    private static final String TAG = "DelayedConfirmation";
    private static final String START_ACTIVITY_PATH = "/start-activity";
    private static final String TIMER_SELECTED_PATH = "/timer_selected";
    private static final String TIMER_FINISHED_PATH = "/timer_finished";
    private GoogleApiClient mGoogleApiClient;

    @Override
    public void onCreate(Bundle b) {
        super.onCreate(b);
        setContentView(R.layout.main_activity);
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addApi(Wearable.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (!mGoogleApiClient.isConnected()) {
            mGoogleApiClient.connect();
        }
    }

    @Override
    protected void onDestroy() {
        if (mGoogleApiClient.isConnected()) {
            mGoogleApiClient.disconnect();
        }
        super.onDestroy();
    }

    @Override
    public void onConnected(Bundle bundle) {
        Wearable.MessageApi.addListener(mGoogleApiClient, this);
    }

    @Override
    public void onConnectionSuspended(int i) {
        Wearable.MessageApi.removeListener(mGoogleApiClient, this);
    }

    @Override
    public void onMessageReceived(final MessageEvent messageEvent) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                if (messageEvent.getPath().equals(TIMER_SELECTED_PATH)) {
                    Toast.makeText(getApplicationContext(), R.string.toast_timer_selected,
                            Toast.LENGTH_SHORT).show();
                } else if (messageEvent.getPath().equals(TIMER_FINISHED_PATH)) {
                    Toast.makeText(getApplicationContext(), R.string.toast_timer_finished,
                            Toast.LENGTH_SHORT).show();
                }
            }
        });

    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        Log.e(TAG, "Failed to connect to Google Api Client with error code "
                + connectionResult.getErrorCode());
    }

    /**
     * Sends a message to Wearable MainActivity when button is pressed.
     */
    public void onStartWearableActivityClick(View view) {
        Wearable.NodeApi.getConnectedNodes(mGoogleApiClient).setResultCallback(
                new ResultCallback<NodeApi.GetConnectedNodesResult>() {
            @Override
            public void onResult(NodeApi.GetConnectedNodesResult getConnectedNodesResult) {
                for (final Node node : getConnectedNodesResult.getNodes()) {
                    Wearable.MessageApi.sendMessage(
                            mGoogleApiClient, node.getId(), START_ACTIVITY_PATH, new byte[0])
                            .setResultCallback(getSendMessageResultCallback());
                }
            }
        });
    }

    private ResultCallback<MessageApi.SendMessageResult> getSendMessageResultCallback() {
        return new ResultCallback<MessageApi.SendMessageResult>() {
            @Override
            public void onResult(MessageApi.SendMessageResult sendMessageResult) {
                if (!sendMessageResult.getStatus().isSuccess()) {
                    Log.e(TAG, "Failed to connect to Google Api Client with status "
                            + sendMessageResult.getStatus());
                }
            }
        };
    }
}