Scroll Essential Android 2.3 Manual de usuario descargar pdf (Pagina 25)

CHAPTER 5

Wearable Application Launch

By Michael Hahn, April 2015

Android wearable devices have an Android operating system, so you can develop applications for wearables much as

you do for handheld devices. Simple handheld apps can potentially run in a standalone mode on the wearable, without

being paired with a handheld. More commonly however, wearable apps work in conjunction with a handheld for voice

recognition, Internet access, and other services.

Android Studio creates a very simple “Hello World” wearable app when you use the new project wizard. If you select

Wearable as an option, the wizard creates both a handheld and a wearable app. Typically you install and launch this

app using Android SDK tools.

5.1 Voice Activation

An easy way to launch a wearable app is with a voice command. Either say “OK Google” or touch the screen. At

the “Speak Now” prompt tell Google to start your app, for example “start ﬁrst wearable”. The wearable then conﬁrms

your voice command and launches the the app.

5.2 Menu Activation

To manually launch the app, touch the watch face and scroll to the last action, which is “Start...”. Then select your app

from the list of installed apps, in this case First_Wearable.

So far, not a single line of new code was necessary; the Android Studio new project wizard created it all. The upcoming

sections show how to add more interesting content and actions.

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 46 47

Sin comentarios

Scroll Essential Android 2.3 Manual de usuario Pagina 25