private void GestureOverlayViewOnGesturePerformed(object sender, GestureOverlayView.GesturePerformedEventArgs gesturePerformedEventArgs)
{
//TODO: Step 12 - Get gestures that have a good decent score
IEnumerable<Prediction> predictions = from p in _gestureLibrary.Recognize(gesturePerformedEventArgs.Gesture)
orderby p.Score descending
where p.Score > 1.0d
select p;
Prediction prediction = predictions.FirstOrDefault();
if (prediction == null)
{
Log.Debug(GetType().FullName, "Nothing seemed to match the user's gesture, so don't do anything.");
return;
}
Log.Debug(GetType().FullName, "Using the prediction named {0} with a score of {1}.", prediction.Name, prediction.Score);
//TODO: Step 13 - Determine which gesture was performed
if (prediction.Name.StartsWith("checkmark") && prediction.Score > 4.0f /* Use this to eliminate false positives */)
{
_imageView.SetImageResource(Resource.Drawable.checked_me);
}
else if (prediction.Name.StartsWith("erase", StringComparison.OrdinalIgnoreCase))
{
// Match one of our "erase" gestures
_imageView.SetImageResource(Resource.Drawable.check_me);
}
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
//TODO: Step 9 - Add a Gesture Overlay View as the primary view
// This activity will use a GestureOverlayView as it's content view. The layout file
// will be added as a subview of this.
GestureOverlayView gestureOverlayView = new GestureOverlayView(this);
SetContentView(gestureOverlayView);
//TODO: Step 10 - Subscribe to gesture events
gestureOverlayView.GesturePerformed += GestureOverlayViewOnGesturePerformed;
//TODO: Step 11 - Load the gestures from the raw resource
// Load the binary gesture file that we created.
_gestureLibrary = GestureLibraries.FromRawResource(this, Resource.Raw.gestures);
if (!_gestureLibrary.Load())
{
Log.Error(GetType().FullName, "There was a problem loading the gesture library.");
Finish();
}
// Load up the layout file for this activity and add it as child view of the
// GestureOverlayView
View view = LayoutInflater.Inflate(Resource.Layout.custom_gesture_layout, null);
_imageView = view.FindViewById<ImageView>(Resource.Id.imageView1);
gestureOverlayView.AddView(view);
}
public void OnGestureCancelled (GestureOverlayView overlay, MotionEvent evt)
{
}
public void OnGestureEnded (GestureOverlayView overlay, MotionEvent evt)
{
parent.mGesture = overlay.Gesture;
if (parent.mGesture.Length < LENGTH_THRESHOLD)
overlay.Clear (false);
parent.mDoneButton.Enabled = true;
}
public void OnGesture (GestureOverlayView overlay, MotionEvent evt)
{
}
public void OnGestureStarted (GestureOverlayView overlay, MotionEvent evt)
{
parent.mDoneButton.Enabled = false;
parent.mGesture = null;
}