70.4 Building the RemoteInput Object

The key element that makes direct reply in-line text possible within a notification is the RemoteInput class. The previous chapters introduced the PendingIntent class and explained the way in which it allows one application to create an intent and then grant other applications or services the ability to launch that intent from outside the original app. In that chapter, entitled “An Android Notifications Tutorial”, a pending intent was created that allowed an activity in the original app to be launched from within a notification. The RemoteInput class allows a request for user input to be included in the PendingIntent object along with the intent. When the intent within the PendingIntent object is triggered, for example launching an activity, that activity is also passed any input provided by the user.

The first step in implementing direct reply within a notification is to create the RemoteInput object. This is achieved using the...