an engineer on the Android Wear team.

Let's look at how your app can let users

provide voice input to notification actions

with Android Wear.

Before we jump in, make sure you've

checked out the previous video on the basics

for developing for Android Wear, including how to optimize

your notifications for the wrist.

And remember to check out developer.android.com

where you can sign up for the developer preview,

and browse the documentation.

So imagine we've built a messaging app that

has a reply action in new message notifications.

Something like this.

When a user presses reply on a phone or tablet,

you would take them to a screen that would let them compose

and send a reply, like this.

If we don't optimize this notification for the wrist,

pressing the reply action on an Android Wear device

would simply open the Reply screen on your phone.

But we can do better.

With the remote input feature of the Android Wear API,

we can hint Android Wear devices that our app can accept

free form voice input in response to the notification.

So here's what that looks like.

Let's show the notification again,

and reply from our Android Wear device.

The user gets presented with a voice

prompt along with a custom hint, in this case,

reply to Bugdroid.

They can then speak a reply like, I'll be right there,

and after confirming, the reply text is sent to the app.

The key here is that the app can skip the phone UI entirely,

simply sending off the reply text in the background.

Let's look at the code to build such a notification.

First, we use the standard NotificationCompat Builder

to create the notification.

We'll omit the reply action for now, since we'll add it later.

Next, we'll build the reply actions, PendingIntent.

This intent will be started when the user presses the Reply

button on the phone.

Note that the intent should be for an activity,

because otherwise pressing the action won't

close the notification shade.

Finally, we use the remote input builder and action builder

classes to construct an action that

will be capable of receiving voice input.

Extra reply text tells Android Wear the name of an intent

extra to add to the reply intent when

a voice response was provided.

And then we simply need to wrap our NotificationCompat builder

in a wearable notification builder.

That's it!

To handle voice replies in your reply activity,

simply check if the extra you specified earlier

has any content.

If it does, you know that the user responded with their voice

from their Android Wear device and you can simply

send the response and finish the activity immediately.

Otherwise, show that activity as you normally would.

And that's all there is to it.

The remote input feature of the Android Wear API

can help you simplify your user's lives,

by providing a seamless, wrist optimized user experience

for responding to notifications.

There are even more APIs for customizing notifications

for Android Wear devices.

So be sure to check out the documentation and sample

code in the developer preview on developer.android.com.

Thanks and happy coding.