The announcement posts for the Photo Sphere API details how you would load a PhotoSphere from a URI:
// This listener will be called with information about the given panorama.
OnPanoramaInfoLoadedListener infoLoadedListener =
new OnPanoramaInfoLoadedListener() {
@Override
public void onPanoramaInfoLoaded(ConnectionResult result,
Intent viewerIntent) {
if (result.isSuccess()) {
// If the intent is not null, the image can be shown as a
// panorama.
if (viewerIntent != null) {
// Use the given intent to start the panorama viewer.
startActivity(viewerIntent);
}
}
// If viewerIntent is null, the image is not a viewable panorama.
}
};
// Create client instance and connect to it.
PanoramaClient client = ...
...
// Once connected to the client, initiate the asynchronous check on whether
// the image is a viewable panorama.
client.loadPanoramaInfo(infoLoadedListener, panoramaUri);
Note that this opens the Photo Sphere in their viewer - there is no built in Photo Sphere viewer that you embed in your Activity
.