Gesture Controller

Ionic Framework Ionic Angular
1

Im trying to get the gesture controller demo to work. Any ideas what im missing?

2

Im getting this error. Also the code is under the tab1 folder.

 ERROR Error: Uncaught (in promise): TypeError: Cannot read property '__zone_symbol__addEventListener' of undefined```
3

Ok figured it out. I needed to define my viewchild differently.

This:

  @ViewChild('rectangle', { static: true, read: ElementRef }) rectangle: ElementRef;

Not:

  @ViewChild('rectangle') rectangle: ElementRef;
4

Great catch! Good to know what goes wrong and why they introduced this change - I am still a bit thinking Angular < v8… Thx for sharing your learning.

1 Like
5

yep hopefully this shows up in someones google search and gets them unstuck.