這兩天學(xué)習(xí)了AngularJS手勢事件感覺這個(gè)地方知識點(diǎn)挺多的,而且很重要,所以,今天添加一點(diǎn)小筆記。
長按 : on-hold
在屏幕同一位置按住超過500ms,將觸發(fā)on-hold事件:
你可以在任何元素上使用這個(gè)指令掛接監(jiān)聽函數(shù):
<any on-hold=“…”>…</any>
示例代碼:
<body ng-controller=”ezCtrl”> <ion-header-bar class=”bar-positive” on-hold=”show_delete();”> <h1 class=”title”>on-hold</h1> </ion-header-bar> <ion-content> <ion-list ng-repeat=”item in items”> <ion-item> {{item}} <ion-delete-button class=”ion-minus-circled”></ion-delete-button> <ion-reorder-button class=”ion-navicon”></ion-reorder-button> </ion-item> </ion-list> </ion-content> <ion-footer-bar class=”bar-positive”></ion-footer-bar> </body>
js:
angular.module(“ezApp”,[“ionic”]) .controller(“ezCtrl”,function($scope, $ionicListDelegate) { $scope.items=[“China”,”Japan”,”India”,”Russian”]; $scope.show_delete = function(){ $ionicListDelegate.showDelete(true); }; });
敲擊 : on-tap
在屏幕上快速點(diǎn)擊一次(停留時(shí)間不超過250ms),將觸發(fā)on-tap事件:
可以在任何元素上使用這個(gè)指令掛接事件監(jiān)聽函數(shù):
<any on-tap=“…”>…</any>
示例代碼:
<head> <meta name=”viewport” content=”initial-scale=1,maximum-scale=1,user-scalable=no,width=device-width,height=device-height”> <script src=”ionic.bundle.min.js”></script> <link rel=”stylesheet” type=”text/css” href=”ionic.min.css”> </head> <body ng-controller=”ezCtrl”> <ion-header-bar class=”bar-positive”> <h1 class=”title”>on-tap</h1> </ion-header-bar> <ion-content> <ion-list ng-repeat=”item in items”> <ion-item on-tap=”show(item);”> {{item}} <ion-reorder-button class=”ion-navicon”></ion-reorder-button> </ion-item> </ion-list> </ion-content> </body>
js:
angular.module(“ezApp”,[“ionic”]) .controller(“ezCtrl”,function($scope, $ionicPopup) { $scope.items=[“England”,”Japan”,”India”,”Russian”]; $scope.show = function(item){ $ionicPopup.alert({ title : “警告!”, template : “為什么要敲 “+ item + “?” }); }; });
雙擊 : on-double-tap
在屏幕上快速敲擊兩次,將觸發(fā)on-double-tap事件:
可以在任何元素上使用這個(gè)指令掛接事件監(jiān)聽函數(shù):
<any on-double-tap=“…”>…</any>
示例代碼:
<body ng-controller=”ezCtrl”> <ion-header-bar class=”bar-positive” on-double-tap=”title='I am double tapped!'”> <h1 class=”title”>{{title}}</h1> </ion-header-bar> <ion-content> <p ng-include=”‘txt/xiyouji.txt'”></p> </ion-content> </body>
js:
angular.module(“ezApp”,[“ionic”]) .controller(“ezCtrl”,function($scope) { $scope.title = “on-double-tap”; });
按下/松開 on-touch/on-release
在屏幕上按下手指或鼠標(biāo)鍵時(shí),會立即觸發(fā)on-touch事件;當(dāng)手指抬起或鼠標(biāo)鍵松開時(shí), 會立即觸發(fā)on-release事件。
可以在任何元素上掛接響應(yīng)的事件監(jiān)聽函數(shù):
<any on-touch=“…” on-release=“…”>…</any>
示例代碼:
<body ng-controller=”ezCtrl”> <ion-header-bar class=”bar-positive” ng-class=”[style]” on-touch=”style='bar-assertive'” on-release=”style='bar-positive'”> <h1 class=”title”>on-touche/on-release</h1> </ion-header-bar> <ion-content> <img src=”img/0021.png”> </ion-content> </body>
js:
angular.module(“ezApp”,[“ionic”]) .controller(“ezCtrl”,function($scope) { });
拖拽 : on-drag
在屏幕上按住并移動(dòng)時(shí),觸發(fā)on-drag拖拽事件:
根據(jù)運(yùn)動(dòng)方向的不同,可以細(xì)分為以下幾種事件:
可以在任意元素上使用這些指令掛接對應(yīng)的事件監(jiān)聽函數(shù):
<any on-drag=“…”>…</any>
示例代碼:
<body ng-controller=”ezCtrl”> <ion-header-bar class=”bar-positive”> <h1 class=”title”>on-drag</h1> </ion-header-bar> <div class=”scroll-content has-header padding”> <img src=”img/baymax.png” on-touch=”onTouch($event)” on-drag=”onDrag($event);”> </div> </body>
js:
angular.module(“ezApp”,[“ionic”]) .controller(“ezCtrl”,function($scope) { var ox,oy; $scope.onTouch = function($event){ ox = $event.target.offsetLeft; oy = $event.target.offsetTop; }; $scope.onDrag = function($event){ var el = $event.target, dx = $event.gesture.deltaX, dy = $event.gesture.deltaY; el.style.left = ox + dx + “px”; el.style.top = oy + dy + “px”; }; });
劃動(dòng) : on-swipe
在屏幕上按住并快速拖動(dòng)時(shí),將觸發(fā)on-swipe劃動(dòng)事件:
根據(jù)劃動(dòng)方向的不同,可細(xì)分為以下指令:
可以在任何元素上使用這些指令掛接事件監(jiān)聽函數(shù):
<any on-swipe=“…”>…</any>
示例代碼:
<body ng-controller=”ezCtrl”> <div class=”scroll-content padding” on-swipe-up=”onSwipeUp()” on-swipe-down=”onSwipeDown()” on-swipe-left=”onSwipeLeft()” on-swipe-right=”onSwipeRight()”> <p class=”padding”>按住鼠標(biāo)快速劃!</p> <i class=”icon {{icon}}”></i> </div> </body>
js:
angular.module(“ezApp”,[“ionic”]) .controller(“ezCtrl”,function($scope){ $scope.icon=”ion-arrow-expand”; $scope.onSwipeUp = function(){ $scope.icon=”ion-arrow-up-a”; }; $scope.onSwipeDown = function(){ $scope.icon=”ion-arrow-down-a”; }; $scope.onSwipeLeft = function(){ $scope.icon=”ion-arrow-left-a”; }; $scope.onSwipeRight = function(){ $scope.icon=”ion-arrow-right-a”; }; });
腳本接口 : $ionicGesture
除了使用之前介紹的特定指令實(shí)現(xiàn)手勢事件的監(jiān)聽,也可以使用$ionicGesture服務(wù) 注冊/解除手勢事件監(jiān)聽:
on(eventType,callback,$element,options) – 注冊手勢事件監(jiān)聽函數(shù)
參數(shù)eventType是支持的事件類型,參看下面介紹;參數(shù)callback指定監(jiān)聽函數(shù); 參數(shù)$element是要綁定事件的jqLite元素。
on()方法返回的是一個(gè)ionic.gesture對象,可供解除監(jiān)聽用。
off(gesture,eventType,callback) – 解除手勢事件監(jiān)聽函數(shù)
參數(shù)gesture是on()方法返回的結(jié)果對象,參數(shù)callback是要移除的監(jiān)聽函數(shù)。
$ionicGesture服務(wù)支持的事件類型有:
hold, tap, doubletap, drag, dragstart, dragend, dragup, dragdown, dragleft, dragright, swipe, swipeup, swipedown, swipeleft, swiperight, transform, transformstart, transformend, rotate, pinch, pinchin, pinchout, touch, release
示例代碼:
<body ng-controller=”ezCtrl”> <ion-header-bar class=”bar-positive”> <h1 class=”title”>$ionicGesture</h1> </ion-header-bar> <ion-content class=”padding”> <button class=”button” id=”test”>test</button> </ion-content> </body>
js:
angular.module(“ezApp”,[“ionic”]) .controller(“ezCtrl”,function($scope,$ionicGesture,$ionicPopup) { var el = document.querySelector(“#test”); $ionicGesture.on(“tap”,function(){ $ionicPopup.alert({ title : “提醒”, template : “這個(gè)監(jiān)聽是用$ionicGesture服務(wù)注冊的!” }) },angular.element(el)); });
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