Scroll Essential Android 2.3 Manual de usuario descargar pdf (Pagina 22)

Android Wear Docs, Release 1.1

4.1.2 Modify the Handheld Activity

Your handheld activity initiates the process by creating a notiﬁcation that includes an action (demand). When a user

views the notiﬁcation and invokes the demand, the wearable broadcasts the demand to the handheld for processing.

You build the notiﬁcation with a hierarchy of objects, intent -> pending intent -> notiﬁcation action -> wearable

extender, and ﬁnally the notiﬁcation itself.

1. Create an Intent that deﬁnes the action that the handheld device should take in response to a wearable demand.

The Intent has the following parameters:

> The context of the activity, service, or broadcast receiver on the handheld that handles wearable demands.

> The name of the class on the handheld that receives wearable demands.

> A constant that speciﬁes a demand action.

> An extra with details about the requested action.

The following example shows how to create an intent for a reply demand. The DemandIntentReceiver is deﬁned

later in Create a Demand Receiver.

public static final String ACTION_DEMAND = "com.androidweardocs.ACTION_DEMAND";

public static final String EXTRA_MESSAGE = "com.androidweardocs.EXTRA_MESSAGE";

public static final String EXTRA_VOICE_REPLY = "com.androidweardocs.EXTRA_VOICE_REPLY";

Intent demandIntent = new Intent(this, DemandIntentReceiver.class)

.putExtra(EXTRA_MESSAGE, “Reply selected.")

.setAction(ACTION_DEMAND);

2. Create a PendingIntent to include in the notiﬁcation.

A PendingIntent wraps the intent to grant the privileges it needs for to execute in your application. It

contains the context of the activity, service, or broadcast receiver that will receive the demand, and the

Intent object itself. This example creates a PendingIntent using the context of a broadcast receiver. Use

getActivity instead of getBroadcast if your activity receives demands.

PendingIntent demandPendingIntent =

PendingIntent.getBroadcast(this, 0, demandIntent, 0);

3. Create a RemoteInput object to hold a voice reply from the wearable device. A voice request or response is a

common action for a wearable device because of the small size of the UI.

String replyLabel = getResources().getString(R.string.app_name);

RemoteInput remoteInput = new RemoteInput.Builder(EXTRA_VOICE_REPLY)

.setLabel(replyLabel)

.build();

4. Create a wearable action.

The following example creates an wearable action that uses a standard reply icon and label, adds the

pending intent, and the RemoteInput object for voice.

NotificationCompat.Action replyAction =

new NotificationCompat.Action.Builder(R.drawable.ic_reply_icon,

getString(R.string.reply_label), demandPendingIntent)

.addRemoteInput(remoteInput)

.build();

5. Create a WearableExtender for the a notiﬁcation and add the wearable action.

18 Chapter 4. Android Wear Demand

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 46 47

Comentarios a estos manuales

Sin comentarios

Scroll Essential Android 2.3 Manual de usuario Pagina 22

Comentarios a estos manuales

Relacionado con productos y manuales para Tabletas Scroll Essential Android 2.3