# UMG DragDrop crashes iOS

**URL:** <https://forums.unrealengine.com/t/umg-dragdrop-crashes-ios/302497>\
**Category:** UI\
**Tags:** bugreport, unreal-engine, iOS, bug-report, question, UMG\
**Created:** [December 26, 2014, 8:04pm UTC](https://forums.unrealengine.com/t/umg-dragdrop-crashes-ios/302497 "2014-12-26T20:04:11Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![anonymous\_user\_a36a29c6](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_a36a29c6](https://forums.unrealengine.com/u/anonymous_user_a36a29c6)\
**Post date:** [December 26, 2014, 8:04pm UTC](https://forums.unrealengine.com/t/umg-dragdrop-crashes-ios/302497/1 "2014-12-26T20:04:11Z")

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If you follow the tutorial here created by Nick Darnell from Epic:

> **[UMG - Drag&Drop capturing mouse events.](https://forums.unrealengine.com/showthread.php?49644-UMG-Drag-amp-Drop-capturing-mouse-events)**
>
> I have just spend 2h trying to get simple mouse events working. Like change text over text block when mouse enter widget. But so far without success. I have Drag&Drop working with Slate in C++, and tried to get something working in UMG now. So...

And create a Drag and Drop widget it will work in the preview and mobile preview, but once you package it and try it on iOS it crashes once it gets to the ‘Create DragDropOperation’ node in the blueprint.

I have confirmed this in a new empty Project.

I read a post somewhere that was made in early November that this wasn’t a tested area (mobile and drag and drop) but I thought i’d post this issue anyways.

I also thought about making my own Drag and Drop to get around this (the detect drag works, so I could still use that part), I would just create the drag widget add it to the canvas and update its position based on the mouse and if the mouse button was being held, but what would be the best way to know the widget you are hovering over in a Drag?

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**Author:** ![anonymous\_user\_a36a29c6](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_a36a29c6](https://forums.unrealengine.com/u/anonymous_user_a36a29c6)\
**Post date:** [December 29, 2014, 7:14pm UTC](https://forums.unrealengine.com/t/umg-dragdrop-crashes-ios/302497/2 "2014-12-29T19:14:47Z")

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Gave up rolling my own drag drop. Will just wait until this can be fixed.

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**Author:** ![AlwysAnrchy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AlwysAnrchy](https://forums.unrealengine.com/u/AlwysAnrchy)\
**Post date:** [December 30, 2014, 7:55pm UTC](https://forums.unrealengine.com/t/umg-dragdrop-crashes-ios/302497/3 "2014-12-30T19:55:20Z")

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Howdy ,

Thank you for reporting this issue. I have been able to replicate the issue internally and have entered JIRA report UE-7069 into our bug database so that the issue may be resolved in future release. I will be sure to keep you updated as I see any movement in the Bug work.

Thanks and have a great day!

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**Author:** ![anonymous\_user\_a36a29c6](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_a36a29c6](https://forums.unrealengine.com/u/anonymous_user_a36a29c6)\
**Post date:** [December 30, 2014, 8:05pm UTC](https://forums.unrealengine.com/t/umg-dragdrop-crashes-ios/302497/4 "2014-12-30T20:05:47Z")

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Thanks! Hope to hear back from you soon

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**Author:** ![aussieburger](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@aussieburger](https://forums.unrealengine.com/u/aussieburger)\
**Post date:** [May 15, 2018, 8:17am UTC](https://forums.unrealengine.com/t/umg-dragdrop-crashes-ios/302497/5 "2018-05-15T08:17:55Z")

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any update here? Also experiencing this problem
