一尘不染

如何在Angular.js中使用Hammer.js

angularjs

我是Angular.js的新手,并且阅读我知道Angular没有诸如tap,doubletap等事件。我试图与Hammer.js结合使用而没有成功。

要点代码

/**
 * angular-hammer.js
 * Inspired by AngularJS' implementation of "click dblclick mousedown..." 
 *
 * This ties in the Hammer events to attributes like:
 * 
 *   hm-tap="add_something()"
 *   hm-swipe="remove_something()"
 *
 * and also has support for Hammer options with:
 *
 *  hm-tap-opts="{hold: false}"
 *
 * or any other of the "hm-event" listed underneath.
 */
angular.forEach('hmTap:tap hmDoubletap:doubletap hmHold:hold hmTransformstart:transformstart hmTransform:transform hmTransforend:transformend hmDragstart:dragstart hmDrag:drag hmDragend:dragend hmSwipe:swipe hmRelease:release'.split(' '), function(name) {
  var directive = name.split(':');
  var directiveName = directive[0];
  var eventName = directive[1];
  angular.module('MYMODULE').directive(directiveName, 
  ['$parse', function($parse) {
    return function(scope, element, attr) {
      var fn = $parse(attr[directiveName]);
      var opts = $parse(attr[directiveName + 'Opts'])(scope, {});
      element.hammer(opts).bind(eventName, function(event) {
        scope.$apply(function() {
          console.log("Doing stuff", event);
          fn(scope, {$event: event});
        });
      });
    };
  }]);
});

现在我已经添加到我的html文件中

<!--...-->
<script src="/js/jquery-1.9.0.js"></script>
    <script src="/js/angular.js"></script>

    <script src="/js/hammer.js"></script>
    <script src="/js/jquery.hammer.js"></script>
    <script src="/js/angular-hammer.js"></script>

    <script src="/js/app/controllers.js"></script>
</html>

但是,当我尝试在我的html中使用它时,它不起作用。

我尝试过

<li hmTap="click($event)">...</li>
<li ngTap="click($event)">...</li>
<li hm-tap="click($event)">...</li>
<li ng-tap="click($event)">...</li>

没有人可以解决这个麻烦吗?


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2020-07-04

共1个答案

一尘不染

快去

将Hammer.js和jquery.hammer.js添加到您的解决方案中。使用JQuery和Angular。

像这样:

<script src="js/jquery/jquery.min.js"></script>
<script src="js/hammer/hammer.js"></script>
<script src="js/hammer/jquery.hammer.js"></script>
<script src="js/angular/angular.min.js"></script>

然后使用Angular指令定义新的HTML属性。

在此示例中,我将创建一个名为 on-tap

angular.module('myApp.directives', [])
       .directive('onTap', function () {
         return function (scope, element, attrs) {
           return $(element).hammer({
             prevent_default: false,
             drag_vertical: false
           })
             .bind("tap", function (ev) {
               return scope.$apply(attrs['onTap']);
             });
         };
       });

然后,您可以为每个Hammer事件创建一个指令:

按住,点击,双击,transformstart,transform,transformend,dragstart,拖动,dragend,释放,滑动。

您的HTML将如下所示:

<button on-tap="DoAngularMethod()">Tap me</button>
2020-07-04