Hi :) Thanks for your post I'm trying to implement specific gesture between images...no drag & drop The images are inside *GestureOverlayView (because of prediction = gestureLibrary.recognize()...I don't know how to recognize a gestures which have curls or shapes)*, and I thought the parent intercepts touch event automatically (by automatically I mean set the OnTouch listener to the parent). Don't you think inheritance is wrongly used in this case??
Anyway..I used *gestureOverlayView.setOnTouchListener* to intercept touch events on children, and *gestureOverlayView.addOnGesturePerformedListener*to check whether the gesture was recognized, and user's finger passed through both images. The problem now is that in *gestureOverlayView.setOnTouchListener,* instead of ACTION_UP, I get ACTION_CANCEL :S I don't know if it should be like that On Friday, August 23, 2013 6:17:23 PM UTC+3, Nobu Games wrote: > > Is it just gestures or are you trying to implement drag and > drop<http://developer.android.com/guide/topics/ui/drag-drop.html>(because it > sounds like that). Either way you could just intercept motion > events in the parent view group that contains your images and let it handle > your gesture recognition. > > So let's say you create a derivative class "L" of your layout that > contains the image views. > > You could override > dispatchTouchEvent(MotionEvent)<http://developer.android.com/reference/android/view/ViewGroup.html#dispatchTouchEvent%28android.view.MotionEvent%29>of > L and check for the following motion event states: > > *1. Gesture started (ACTION_DOWN)* > Iterate your list of ImageView children of L and see if the touch event > point is in one of them. If yes, your gesture starts. > > The View class has the method getGlobalVisibleRect(Rect, > Point)<http://developer.android.com/reference/android/view/View.html#getGlobalVisibleRect(android.graphics.Rect,%20android.graphics.Point)>which > can be used for checking if your touch event coordinate hits one of > your image views. It would roughly look like the following (not tested > since I'm not sure if these methods return locations in screen or window > coordinate system, you may need to debug it): > > *Rect* r = new *Rect*();* *// should be class member you can reuse >> float x = motionEvent.getRawX(); >> float y = motionEvent.getRawY(); >> >> *for*(*ImageView* iv : imageViews) { >> iv.getGlobalVisibleRect(r); >> >> *if*(r.contains(x, y)) { >> // Touch event is inside image view >> } >> } >> > > *2. Gesture ongoing (ACTION_MOVE)* > If you visualize your gesture by drawing some trail or moving around the > first touched image view then this is the right point to do so. Here you > can update your view(s). > > *3. Gesture finished (ACTION_UP)* > Here you need to iterate your ImageView children again in order to see if > the finger has been lifted over another image view. In that case your > gesture was successful. > > *4. Gesture canceled (ACTION_CANCEL)* > Whatever your gesture is doing should be canceled here. > > > On Friday, August 23, 2013 1:21:59 AM UTC-5, OronS wrote: >> >> Hi there [image: :)] >> >> I have two ImageViews in my app. >> I've added a gesture detector (GestureOverlayView), and added gestures to >> the app by using android's sample, which record gestures and save them to a >> file, and I then load this file. >> >> My Goal is to limit the gestures area.. I want them to start from one >> ImageView, and end on the other. >> I didn't find anything on google!! : / >> >> I've added OnTouch listener to both images, but I don't know how to >> detect a gesture coming from the outside of a View. >> >> I can detect a gesture starts from one Image ("Down" event), but when my >> finger goes over the second and then go up, the event triggered is "Cancel" >> on the first image >> >> Please Help >> >> Thanks, >> Oron >> > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
