Change icon when clicked (add class, remove class)

ionic-v1
21

it doesnt seems to be working in ionic 2, can you provide a way to do it in ionic 2?

22

Hi, I tried with my button removing class and setting ng-class as you mentioned but it is losing all css. No icon is displayed.

<button id="detalhes-button6" style="color:#008BBB;text-align:left;border-radius:9px 9px 9px 9px;" class="button button-calm button-clear icon ion-ios-heart-outline like_btn" ng-click="like()">
   <span class="likes">{{like_num}}</span>
</button>
23

Hi, this is how I toggle icons in ionic3 based on a boolean variable;