ios - How to drag and drop tweets from tableview onto viewcontroller -
I am currently working on a project, I have tweets in embedded tableview and drag and drop selected cells on the view need to. How can I get this to work? I am starting a lot so there is not much thought. Any suggestions to overcome this problem?
drag & amp; Drop down, but here's a brief review of the process, which can get you started.
You can either use the UIPNZstoreRecognizer or to determine whether the user has started, moved or dropped, one object.
When the drag starts, you have to separate the view from your supervision (removeFromSuperview) and keep on touch screen, touching the fire will fire (if you are using gesturerequisher, then state In the form of a user's finger move, you can adjust the center of your view to reflect the new location (for example, dragView.center). Finally, when it is released, touch is possible (Or UIGestureRecognizerStateEnded state change in the PAN gesture identifier).
You will usually see examples in these threads and elsewhere that it shows how the new center calculates, but it usually looks like this Is:
float dx = Pt.x - startLocation.x; // Calculate the start of float DI = pt.y - change in startLocation.y; // c CGPoint newCenter = CGPointMake (self.center.x + dx, self.center.y + dy); // Calculate new center self.center = newCenter; // Set new center This is your The move Rishy, ready for the next repetition.
When you go from one scene to another, you are more complex because you have to change between the coordinating systems.
If you are familiar with Affine Transforms, then the method which is very simple, where the state change (i.e., the visual move) is controlled in something like this:
CGPint Translate = [sender translateviewview: dragwi]; CGAffineTransform theTransform = dragView.transform; TheTransform.tx = Translation X; TheTransform.ty = Translation Y; DragView.transform = theTransform; And when there is a drop, something like this happens:
CGPaint newCenter = CGTEXMake (dragview center.x + drag-viv.Transform Drag Viv.center.y + dragView.transform.ty); DragView.center = newCenter; CGAffineTransform theTransform = dragView.transform; TheTransform.tx = 0.0f; TheTransform.ty = 0.0f; (Code to attach to get the view) There is another forcing factor, when the view can be left in only a few places within the view. The best way to handle it is to create an array of "drop targets" in which only one scene that will accept a drop. You usually use which drop target was selected to use tags.
I find it easy to use the UIPNestRector, but anybody works. I also think that if you handle the gesture recognition in a particular "drag weave" then it is easy - but such situations Where it will not work (or I can not work it out), there are many ideas in which the item can be omitted if you can customize it, here are some codes which Yes to work:
I have not tried to do this, but others have good luck with it.
I do not know that it will help at all, but maybe you'll roll it out.
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