touch-event

In the app I'm currently designing I have a MKMapView with overlays on it (customized MKPolylines btw) and I would like to be able to detect touch events on these overlays and assign a specific action to each overlay. Could any one help me on this one ? Thanks ! Benja Jano This can be solved combining How to intercept touches events on a MKMapView or UIWebView objects? and How to determine if an annotation is inside of MKPolygonView (iOS) . Add this in viewWillAppear: WildcardGestureRecognizer * tapInterceptor = [[WildcardGestureRecognizer alloc] init]; tapInterceptor.touchesBeganCallback = ^

Context : Web app on MobileSafari/iPad, both full-screen and embedded in iframe Goal : Technique that provides custom event handlers for Press and Tap but not Pinch (zoom) or Drag (scroll/pan). We want to provide custom behavior for Press, but to let Safari handle Scroll/Pan/Zoom still. Problem : The two goals seem to be mutually exclusive. To prevent the default behavior for a Press gesture, event.preventDefault must be called in immediate response to ontouchstart . However, to let the default behavior proceed on a Drag, we must not call event.preventDefault on the initial ontouchstart. Once

I'd like to do an action if someone touches a predeclared UILabel , something like: if (label is touched) { my actions; } Is there a method/way to do that? You could use a gesture recognizer: - (void)someSetupMethod { // ... label.userInteractionEnabled = YES; UITapGestureRecognizer *tapGesture = \ [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapLabelWithGesture:)]; [label addGestureRecognizer:tapGesture]; [tapGesture release]; } - (void)didTapLabelWithGesture:(UITapGestureRecognizer *)tapGesture { // ... } By default, UILabel isn't configured to accept touch input.

I'm playing with touchstart and touchend events on my iPhone. I built a sample page that has div that if you touch it and scroll the page, it should return the y coordinates of the start and end positions. link: http://jsbin.com/ibemom/2 the jQuery: var touchStartPos; $('.theDiv') .bind('touchstart', function(e){ touchStartPos = e.pageY; }) .bind('touchend', function(e){ alert(touchStartPos + ' | ' + e.pageY) }) When I load that page on my iPhone, however, the alert keeps reporting both values as zero. Anyone see anything wrong with what I have? UPDATE: I stumbled across this bit of code in

I'm testing the HTML5 canvas and using Javascript to draw for touch enabled devices. While I have it working in iOS devices I cannot get it to work on Android. I have narrowed it down to event.pageX not returning the coordinates, but instead either returning 0, or undefined (based on the Browser). I've tested it on my phone running Cyanogen 7.1 in Opera Mobile and Dolphin browser, and also on a Galaxy Tab 10.1 (Android 3.1) running the standard browser. I've modified the code to show an alert on a touchstart event displaying the event.pageX, event.layerX and event.clientX coordinates (I'm

I have several ImageViews, and I want the onTouch event to fire for each of them when I drag my finger across multiple images. At present the onTouch event is only firing on the first ImageView (or actually on multiple ImageViews but only when multitouching the screen). Pseudo code: for(int i=0;i<5;i++){ ImageView img=new ImageView(this); LinearLayout.LayoutParams layoutParams=new LinearLayout.LayoutParams(width,height); img.setImageResource(R.drawable.cell); img.setOnTouchListener(this); mainLayout.addView(img,layoutParams); } ... public boolean onTouch (View v, MotionEvent event){ Log.d("MY

So, earlier I posted a question about receiving touch events from a service (apparently no one knows the answer). After trying to figure it out myself for hours, I gave up and decided to email a developer known as RubberBigPepper. I asked him how he did it in his app Volume control and he promptly responded " TYPE_SYSTEM_ALERT window ". What does this mean, and how can it be implemented in code? EDIT: I used the following method: getWindow().addFlags(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT); and the window failed to receive touch events. I emailed him about this as well and he says: "Use

I am in a tricky situation, hope you can help me with it. I have few views (TextViews), horizontally placed one after another in a linear layout. When I press on textview1, drag my finger to any other textview and release touch, I want to be able to get the view(textview) on which the finger was lifted. I went over the TouchListener api, it says that every event starts with a ACTION_DOWN event action. Since other textviews won't fire that event, how can I get the reference to the textViews on which I lifted my finger? I tried it even, and the action_up would fire only on the textView that