ios - Animate a view on key window while dragging another view with UILongPressGestureRecognizer -


i have added uilongpressgesturerecognizer view, , after long press event, user can drag view.

i have added view on key window (need custom view on navigation , tab bar controllers, why need add on key window) using below code:

// add custom view on key window. uiwindow *currentwindow = [uiapplication sharedapplication].keywindow; [currentwindow addsubview:customview];

now, when dragging first view beyond (screensize/2) point, want customview animate right side of view. tried following code present view:

// animate customview view. [uiview animatewithduration:0.50f animations:^{                 customview.frame = cgrectmake(screen_width - customviewwidth, 0, customviewwidth, screen_height); } completion:nil];

but view not appear neither animates. tried use dispatch_async(dispatch_get_main_queue(),{}); still no success.

any appreciated.

you should use uiattachmentbehavior.

it specifies dynamic connection between 2 dynamic items, or between dynamic item , anchor point. when dynamic item moves, either tracking gesture or via other input, attached dynamic item moves—if possible given other dynamic parameters , boundaries. can configure attachment behavior using length, damping, , frequency properties.


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