swipe directive in ionic framework?

问题:

Does ionic has directives for swiping or other events?
I found this service: $ionicGesture. Should I make my own directives with this?

Or should I use something else like ngTouch?

回答1:

There aren't any swipe directives right out of the box, but since the events are exposed, it's pretty simple to throw something together.

.directive('detectGestures', function($ionicGesture) {
  return {
    restrict :  'A',

    link : function(scope, elem, attrs) {
      var gestureType = attrs.gestureType;

      switch(gestureType) {
        case 'swipe':
          $ionicGesture.on('swipe', scope.reportEvent, elem);
          break;
        case 'swiperight':
          $ionicGesture.on('swiperight', scope.reportEvent, elem);
          break;
        case 'swipeleft':
          $ionicGesture.on('swipeleft', scope.reportEvent, elem);
          break;
        case 'doubletap':
          $ionicGesture.on('doubletap', scope.reportEvent, elem);
          break;
        case 'tap':
          $ionicGesture.on('tap', scope.reportEvent, elem);
          break;
      }

    }
  }
})

Check out this demo

回答2:

Seems like the swipe directives didn't exist when this question was active, but they are available now: http://ionicframework.com/docs/api/directive/onSwipe/

<button on-swipe="onSwipe()" class="button">Test</button>

Also avaiable: on-swipe-left, on-swipe-right, on-swipe-up and on-swipe-down.

回答3:

There is a great tutorial explaining how to do that with Ionicframework and AngularJS http://ionicframework.com/blog/ionic-swipeable-cards/

Basically you gonna create a View using the Ionicframework objetcs/functions like the snippet bellow, and create a directive that will call it. See details in the tutorial.

var SwipeableCardView = ionic.views.View.inherit({   
    initialize: function(opts) {
    // Store the card element
    this.el = opts.el;
    this.bindEvents();
},
bindEvents: function() {

    var self = this;

    ionic.onGesture('drag', function(e) {
       // Process drag
    }, this.el);

    ionic.onGesture('dragend', function(e) {
       // Process end of drag
    }, this.el);
},