Android Developers Blog Post

Full source code to MainActivity.java

package testing.blog.waynepie.blogtesting;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

import android.app.Notification;
import android.app.PendingIntent;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.NotificationManagerCompat;

// Extra dependencies needed for the pages example
import java.util.ArrayList;
import java.util.List;
import android.support.v4.app.NotificationCompat.BigTextStyle;

public class MainActivity extends ActionBarActivity {

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

        // Only enable one of these notification methods at a time, comment the other out
        showStackNotifications();
        // showPageNotifications();
    }


    @Override
	public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.blog_testing, menu);
        return true;
    }

    @Override
	public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }


    //
    // Stacks implementation
    // http://android-developers.blogspot.com/2014/05/stacking-notifications-for-android-wear.html
    //
    public void showStackNotifications() {
        Bitmap bitmapMila = BitmapFactory.decodeResource(getResources(), R.drawable.mila128);

        // Nuke all previous notifications and generate unique ids
        NotificationManagerCompat.from(this).cancelAll();
        int notificationId = 0;

        // String to represent the group all the notifications will be a part of
        final String GROUP_KEY_MESSAGES = "group_key_messages";

        // Group notification that will be visible on the phone
        Notification summaryNotification = new NotificationCompat.Builder(this)
	    .setContentTitle("2 Pet Notifications")
	    .setContentText("Mila and Dylan both sent messages")
	    .setSmallIcon(R.drawable.ic_launcher)
	    .setLargeIcon(bitmapMila)
	    .setGroup(GROUP_KEY_MESSAGES)
	    .setGroupSummary(true)
	    .build();

        // Separate notifications that will be visible on the watch
        Intent viewIntent1 = new Intent(this, MainActivity.class);
        PendingIntent viewPendingIntent1 =
	    PendingIntent.getActivity(this, notificationId+1, viewIntent1, 0);
        Notification notification1 = new NotificationCompat.Builder(this)
	    .addAction(R.drawable.ic_action_done, "Treat Fed", viewPendingIntent1)
	    .setContentTitle("Message from Mila")
	    .setContentText("What's for dinner? "
			    + "Can we have steak?")
	    .setSmallIcon(R.drawable.ic_launcher)
	    .setGroup(GROUP_KEY_MESSAGES)
	    .build();

        Intent viewIntent2 = new Intent(this, MainActivity.class);
        PendingIntent viewPendingIntent2 =
	    PendingIntent.getActivity(this, notificationId+2, viewIntent2, 0);
        Notification notification2 = new NotificationCompat.Builder(this)
	    .addAction(R.drawable.ic_action_done, "Water Filled", viewPendingIntent2)
	    .setContentTitle("Message from Dylan")
	    .setContentText("Can you refill our water bowl?")
	    .setSmallIcon(R.drawable.ic_launcher)
	    .setGroup(GROUP_KEY_MESSAGES)
	    .build();

        // Issue the group notification
        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
        notificationManager.notify(notificationId+0, summaryNotification);

        // Issue the separate wear notifications
        notificationManager.notify(notificationId+2, notification2);
        notificationManager.notify(notificationId+1, notification1);
    }

    //
    // Pages implementation
    // http://android-developers.blogspot.com/2014/05/another-easy-sample-for-notification.html
    //
    public void showPageNotifications() {
        // Nuke all previous notifications and generate unique ids
        NotificationManagerCompat.from(this).cancelAll();
        int notificationId = 0;

        // Titles, authors, and overdue status of some books to display
        String[] titles = { "How to survive with no food",
			    "Sailing around the world",
			    "Navigation on the high seas",
			    "Avoiding sea monsters",
			    "Salt water distillation",
			    "Sail boat maintenance" };
        String[] authors = { "I. M. Hungry",
			     "F. Magellan",
			     "E. Shackleton",
			     "K. Kracken",
			     "U. R. Thirsty",
			     "J. Macgyver" };
        Boolean[] overdue = { true, true, true, true, true, false };
        List extras = new ArrayList();

        // Extra pages of information for the notification that will
        // only appear on the wearable
        int numOverdue = 0;
        for (int i = 0; i < titles.length; i++) {
            if (!overdue[i]) continue;
            BigTextStyle extraPageStyle = new NotificationCompat.BigTextStyle();
            extraPageStyle.setBigContentTitle("Overdue Book " + (i+1))
		.bigText("Title: " + titles[i] + ", Author: " + authors[i]);
            Notification extraPageNotification = new NotificationCompat.Builder(this)
		.setStyle(extraPageStyle)
		.build();
            extras.add(extraPageNotification);
            numOverdue++;
        }

        // Main notification that will appear on the phone handset and the wearable
        Intent viewIntent1 = new Intent(this, MainActivity.class);
        PendingIntent viewPendingIntent1 =
	    PendingIntent.getActivity(this, notificationId+1, viewIntent1, 0);
        Notification notification1 = new NotificationCompat.Builder(this)
	    .addAction(R.drawable.ic_action_done, "Returned", viewPendingIntent1)
	    .setContentTitle("Books Overdue")
	    .setContentText("You have " + numOverdue + " books due at the library")
	    .setSmallIcon(R.drawable.ic_launcher)
	    .extend(new NotificationCompat.WearableExtender().addPages(extras))
	    .build();

        // Issue the notification
        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
        notificationManager.notify(notificationId+1, notification1);
    }

}