Raataar/kinderspiel
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DragandDrop geadded

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This commit is contained in:
Carsten Hilmer 2016-10-21 00:54:38 +02:00
parent 1b1998dc17
commit caab200984
7 changed files with 748 additions and 3 deletions
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1
www/index.html
View File

@ -27,6 +27,7 @@
<!-- ionic/angularjs js -->
<script src="lib/ionic/js/ionic.bundle.js"></script>
<script src="js/lib/angular-animate/angular-animate.js"></script>
<script src="lib/ng-draggable/ngDraggable.js"></script>
<!-- cordova script (this will be a 404 during development) -->
<script src="lib/ng-cordova/ng-cordova.min.js"></script>

12
www/js/app.js
View File

@ -5,7 +5,7 @@
// the 2nd parameter is an array of 'requires'
// 'starter.services' is found in services.js
// 'starter.controllers' is found in controllers.js
angular.module('starter', ['ionic', 'ngCordova', 'starter.controllers', 'starter.services'])
angular.module('starter', ['ionic', 'ngCordova', 'ngDraggable', 'starter.controllers', 'starter.services'])
.run(function($ionicPlatform) {
$ionicPlatform.ready(function() {
@ -69,6 +69,16 @@ angular.module('starter', ['ionic', 'ngCordova', 'starter.controllers', 'starter
controller: 'Spiel2Ctrl'
}
}
})
.state('tab.spiel3', {
url: '/spiel3',
views: {
'tab-spiel3': {
templateUrl: 'templates/spiel3.html',
controller: 'Spiel3Ctrl'
}
}
});
// if none of the above states are matched, use this as the fallback

51
www/js/controllers.js
View File

@ -18,6 +18,11 @@ angular.module('starter.controllers', [])
$cordovaMedia.play(media);
}
$scope.starte_spiel3 = function() {
var media = new Media('/android_asset/www/sounds/spiel2.mp3', goto_spiel2, null);
$cordovaMedia.play(media);
}
function goto_spiel1() {
$state.go('tab.spiel1');
}
@ -25,6 +30,10 @@ angular.module('starter.controllers', [])
function goto_spiel2() {
$state.go('tab.spiel2');
}
function goto_spiel3() {
$state.go('tab.spiel3');
}
})
@ -259,4 +268,46 @@ $scope.playwait = function(src) {
goto_newspiel();
})
.controller('Spiel3Ctrl', function($scope, $cordovaMedia, $state, $timeout) {
$scope.spiele=[];
$scope.error = false;
var tier = {
id: 1,
bild: 'elefant.jpg',
sound1: 'sound_elefant.mp3',
antwort: ''
};
$scope.spiele.push(tier);
var tier1 = {
id: 2,
bild: 'esel.jpg',
sound1: 'sound_esel.mp3',
antwort: ''
};
$scope.spiele.push(tier1);
var tier2 = {
id: 3,
bild: 'hahn.jpg',
sound1: 'sound_hahn.mp3',
antwort: ''
};
$scope.spiele.push(tier2);
$scope.onDropComplete = function (index, obj, evt) {
var otherObj = $scope.spiele[index];
var otherIndex = $scope.spiele.indexOf(obj);
$scope.spiele[index] = obj;
$scope.spiele[otherIndex] = otherObj;
}
});

660
www/lib/ng-draggable/ngDraggable.js Normal file
View File

@ -0,0 +1,660 @@
/*
*
* https://github.com/fatlinesofcode/ngDraggable
*/
angular.module("ngDraggable", [])
.service('ngDraggable', [function() {
var scope = this;
scope.inputEvent = function(event) {
if (angular.isDefined(event.touches)) {
return event.touches[0];
}
//Checking both is not redundent. If only check if touches isDefined, angularjs isDefnied will return error and stop the remaining scripty if event.originalEvent is not defined.
else if (angular.isDefined(event.originalEvent) && angular.isDefined(event.originalEvent.touches)) {
return event.originalEvent.touches[0];
}
return event;
};
scope.touchTimeout = 100;
}])
.directive('ngDrag', ['$rootScope', '$parse', '$document', '$window', 'ngDraggable', function ($rootScope, $parse, $document, $window, ngDraggable) {
return {
restrict: 'A',
link: function (scope, element, attrs) {
scope.value = attrs.ngDrag;
var offset,_centerAnchor=false,_mx,_my,_tx,_ty,_mrx,_mry;
var _hasTouch = ('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch;
var _pressEvents = 'touchstart mousedown';
var _moveEvents = 'touchmove mousemove';
var _releaseEvents = 'touchend mouseup';
var _dragHandle;
// to identify the element in order to prevent getting superflous events when a single element has both drag and drop directives on it.
var _myid = scope.$id;
var _data = null;
var _dragOffset = null;
var _dragEnabled = false;
var _pressTimer = null;
var onDragStartCallback = $parse(attrs.ngDragStart) || null;
var onDragStopCallback = $parse(attrs.ngDragStop) || null;
var onDragSuccessCallback = $parse(attrs.ngDragSuccess) || null;
var allowTransform = angular.isDefined(attrs.allowTransform) ? scope.$eval(attrs.allowTransform) : true;
var getDragData = $parse(attrs.ngDragData);
// deregistration function for mouse move events in $rootScope triggered by jqLite trigger handler
var _deregisterRootMoveListener = angular.noop;
var initialize = function () {
element.attr('draggable', 'false'); // prevent native drag
// check to see if drag handle(s) was specified
// if querySelectorAll is available, we use this instead of find
// as JQLite find is limited to tagnames
if (element[0].querySelectorAll) {
var dragHandles = angular.element(element[0].querySelectorAll('[ng-drag-handle]'));
} else {
var dragHandles = element.find('[ng-drag-handle]');
}
if (dragHandles.length) {
_dragHandle = dragHandles;
}
toggleListeners(true);
};
var toggleListeners = function (enable) {
if (!enable)return;
// add listeners.
scope.$on('$destroy', onDestroy);
scope.$watch(attrs.ngDrag, onEnableChange);
scope.$watch(attrs.ngCenterAnchor, onCenterAnchor);
// wire up touch events
if (_dragHandle) {
// handle(s) specified, use those to initiate drag
_dragHandle.on(_pressEvents, onpress);
} else {
// no handle(s) specified, use the element as the handle
element.on(_pressEvents, onpress);
}
// if(! _hasTouch && element[0].nodeName.toLowerCase() == "img"){
if( element[0].nodeName.toLowerCase() == "img"){
element.on('mousedown', function(){ return false;}); // prevent native drag for images
}
};
var onDestroy = function (enable) {
toggleListeners(false);
};
var onEnableChange = function (newVal, oldVal) {
_dragEnabled = (newVal);
};
var onCenterAnchor = function (newVal, oldVal) {
if(angular.isDefined(newVal))
_centerAnchor = (newVal || 'true');
};
var isClickableElement = function (evt) {
return (
angular.isDefined(angular.element(evt.target).attr("ng-cancel-drag"))
);
};
/*
* When the element is clicked start the drag behaviour
* On touch devices as a small delay so as not to prevent native window scrolling
*/
var onpress = function(evt) {
// console.log("110"+" onpress: "+Math.random()+" "+ evt.type);
if(! _dragEnabled)return;
if (isClickableElement(evt)) {
return;
}
if (evt.type == "mousedown" && evt.button != 0) {
// Do not start dragging on right-click
return;
}
var useTouch = evt.type === 'touchstart' ? true : false;
if(useTouch){
cancelPress();
_pressTimer = setTimeout(function(){
cancelPress();
onlongpress(evt);
},ngDraggable.touchTimeout);
$document.on(_moveEvents, cancelPress);
$document.on(_releaseEvents, cancelPress);
}else{
onlongpress(evt);
}
};
var cancelPress = function() {
clearTimeout(_pressTimer);
$document.off(_moveEvents, cancelPress);
$document.off(_releaseEvents, cancelPress);
};
var onlongpress = function(evt) {
if(! _dragEnabled)return;
evt.preventDefault();
offset = element[0].getBoundingClientRect();
if(allowTransform)
_dragOffset = offset;
else{
_dragOffset = {left:document.body.scrollLeft, top:document.body.scrollTop};
}
element.centerX = element[0].offsetWidth / 2;
element.centerY = element[0].offsetHeight / 2;
_mx = ngDraggable.inputEvent(evt).pageX;//ngDraggable.getEventProp(evt, 'pageX');
_my = ngDraggable.inputEvent(evt).pageY;//ngDraggable.getEventProp(evt, 'pageY');
_mrx = _mx - offset.left;
_mry = _my - offset.top;
if (_centerAnchor) {
_tx = _mx - element.centerX - $window.pageXOffset;
_ty = _my - element.centerY - $window.pageYOffset;
} else {
_tx = _mx - _mrx - $window.pageXOffset;
_ty = _my - _mry - $window.pageYOffset;
}
$document.on(_moveEvents, onmove);
$document.on(_releaseEvents, onrelease);
// This event is used to receive manually triggered mouse move events
// jqLite unfortunately only supports triggerHandler(...)
// See http://api.jquery.com/triggerHandler/
// _deregisterRootMoveListener = $rootScope.$on('draggable:_triggerHandlerMove', onmove);
_deregisterRootMoveListener = $rootScope.$on('draggable:_triggerHandlerMove', function(event, origEvent) {
onmove(origEvent);
});
};
var onmove = function (evt) {
if (!_dragEnabled)return;
evt.preventDefault();
if (!element.hasClass('dragging')) {
_data = getDragData(scope);
element.addClass('dragging');
$rootScope.$broadcast('draggable:start', {x:_mx, y:_my, tx:_tx, ty:_ty, event:evt, element:element, data:_data});
if (onDragStartCallback ){
scope.$apply(function () {
onDragStartCallback(scope, {$data: _data, $event: evt});
});
}
}
_mx = ngDraggable.inputEvent(evt).pageX;//ngDraggable.getEventProp(evt, 'pageX');
_my = ngDraggable.inputEvent(evt).pageY;//ngDraggable.getEventProp(evt, 'pageY');
if (_centerAnchor) {
_tx = _mx - element.centerX - _dragOffset.left;
_ty = _my - element.centerY - _dragOffset.top;
} else {
_tx = _mx - _mrx - _dragOffset.left;
_ty = _my - _mry - _dragOffset.top;
}
moveElement(_tx, _ty);
$rootScope.$broadcast('draggable:move', { x: _mx, y: _my, tx: _tx, ty: _ty, event: evt, element: element, data: _data, uid: _myid, dragOffset: _dragOffset });
};
var onrelease = function(evt) {
if (!_dragEnabled)
return;
evt.preventDefault();
$rootScope.$broadcast('draggable:end', {x:_mx, y:_my, tx:_tx, ty:_ty, event:evt, element:element, data:_data, callback:onDragComplete, uid: _myid});
element.removeClass('dragging');
element.parent().find('.drag-enter').removeClass('drag-enter');
reset();
$document.off(_moveEvents, onmove);
$document.off(_releaseEvents, onrelease);
if (onDragStopCallback ){
scope.$apply(function () {
onDragStopCallback(scope, {$data: _data, $event: evt});
});
}
_deregisterRootMoveListener();
};
var onDragComplete = function(evt) {
if (!onDragSuccessCallback )return;
scope.$apply(function () {
onDragSuccessCallback(scope, {$data: _data, $event: evt});
});
};
var reset = function() {
if(allowTransform)
element.css({transform:'', 'z-index':'', '-webkit-transform':'', '-ms-transform':''});
else
element.css({'position':'',top:'',left:''});
};
var moveElement = function (x, y) {
if(allowTransform) {
element.css({
transform: 'matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, ' + x + ', ' + y + ', 0, 1)',
'z-index': 99999,
'-webkit-transform': 'matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, ' + x + ', ' + y + ', 0, 1)',
'-ms-transform': 'matrix(1, 0, 0, 1, ' + x + ', ' + y + ')'
});
}else{
element.css({'left':x+'px','top':y+'px', 'position':'fixed'});
}
};
initialize();
}
};
}])
.directive('ngDrop', ['$parse', '$timeout', '$window', '$document', 'ngDraggable', function ($parse, $timeout, $window, $document, ngDraggable) {
return {
restrict: 'A',
link: function (scope, element, attrs) {
scope.value = attrs.ngDrop;
scope.isTouching = false;
var _lastDropTouch=null;
var _myid = scope.$id;
var _dropEnabled=false;
var onDropCallback = $parse(attrs.ngDropSuccess);// || function(){};
var onDragStartCallback = $parse(attrs.ngDragStart);
var onDragStopCallback = $parse(attrs.ngDragStop);
var onDragMoveCallback = $parse(attrs.ngDragMove);
var initialize = function () {
toggleListeners(true);
};
var toggleListeners = function (enable) {
// remove listeners
if (!enable)return;
// add listeners.
scope.$watch(attrs.ngDrop, onEnableChange);
scope.$on('$destroy', onDestroy);
scope.$on('draggable:start', onDragStart);
scope.$on('draggable:move', onDragMove);
scope.$on('draggable:end', onDragEnd);
};
var onDestroy = function (enable) {
toggleListeners(false);
};
var onEnableChange = function (newVal, oldVal) {
_dropEnabled=newVal;
};
var onDragStart = function(evt, obj) {
if(! _dropEnabled)return;
isTouching(obj.x,obj.y,obj.element);
if (attrs.ngDragStart) {
$timeout(function(){
onDragStartCallback(scope, {$data: obj.data, $event: obj});
});
}
};
var onDragMove = function(evt, obj) {
if(! _dropEnabled)return;
isTouching(obj.x,obj.y,obj.element);
if (attrs.ngDragMove) {
$timeout(function(){
onDragMoveCallback(scope, {$data: obj.data, $event: obj});
});
}
};
var onDragEnd = function (evt, obj) {
// don't listen to drop events if this is the element being dragged
// only update the styles and return
if (!_dropEnabled || _myid === obj.uid) {
updateDragStyles(false, obj.element);
return;
}
if (isTouching(obj.x, obj.y, obj.element)) {
// call the ngDraggable ngDragSuccess element callback
if(obj.callback){
obj.callback(obj);
}
if (attrs.ngDropSuccess) {
$timeout(function(){
onDropCallback(scope, {$data: obj.data, $event: obj, $target: scope.$eval(scope.value)});
});
}
}
if (attrs.ngDragStop) {
$timeout(function(){
onDragStopCallback(scope, {$data: obj.data, $event: obj});
});
}
updateDragStyles(false, obj.element);
};
var isTouching = function(mouseX, mouseY, dragElement) {
var touching= hitTest(mouseX, mouseY);
scope.isTouching = touching;
if(touching){
_lastDropTouch = element;
}
updateDragStyles(touching, dragElement);
return touching;
};
var updateDragStyles = function(touching, dragElement) {
if(touching){
element.addClass('drag-enter');
dragElement.addClass('drag-over');
}else if(_lastDropTouch == element){
_lastDropTouch=null;
element.removeClass('drag-enter');
dragElement.removeClass('drag-over');
}
};
var hitTest = function(x, y) {
var bounds = element[0].getBoundingClientRect();// ngDraggable.getPrivOffset(element);
x -= $document[0].body.scrollLeft + $document[0].documentElement.scrollLeft;
y -= $document[0].body.scrollTop + $document[0].documentElement.scrollTop;
return x >= bounds.left
&& x <= bounds.right
&& y <= bounds.bottom
&& y >= bounds.top;
};
initialize();
}
};
}])
.directive('ngDragClone', ['$parse', '$timeout', 'ngDraggable', function ($parse, $timeout, ngDraggable) {
return {
restrict: 'A',
link: function (scope, element, attrs) {
var img, _allowClone=true;
var _dragOffset = null;
scope.clonedData = {};
var initialize = function () {
img = element.find('img');
element.attr('draggable', 'false');
img.attr('draggable', 'false');
reset();
toggleListeners(true);
};
var toggleListeners = function (enable) {
// remove listeners
if (!enable)return;
// add listeners.
scope.$on('draggable:start', onDragStart);
scope.$on('draggable:move', onDragMove);
scope.$on('draggable:end', onDragEnd);
preventContextMenu();
};
var preventContextMenu = function() {
// element.off('mousedown touchstart touchmove touchend touchcancel', absorbEvent_);
img.off('mousedown touchstart touchmove touchend touchcancel', absorbEvent_);
// element.on('mousedown touchstart touchmove touchend touchcancel', absorbEvent_);
img.on('mousedown touchstart touchmove touchend touchcancel', absorbEvent_);
};
var onDragStart = function(evt, obj, elm) {
_allowClone=true;
if(angular.isDefined(obj.data.allowClone)){
_allowClone=obj.data.allowClone;
}
if(_allowClone) {
scope.$apply(function () {
scope.clonedData = obj.data;
});
element.css('width', obj.element[0].offsetWidth);
element.css('height', obj.element[0].offsetHeight);
moveElement(obj.tx, obj.ty);
}
};
var onDragMove = function(evt, obj) {
if(_allowClone) {
_tx = obj.tx + obj.dragOffset.left;
_ty = obj.ty + obj.dragOffset.top;
moveElement(_tx, _ty);
}
};
var onDragEnd = function(evt, obj) {
//moveElement(obj.tx,obj.ty);
if(_allowClone) {
reset();
}
};
var reset = function() {
element.css({left:0,top:0, position:'fixed', 'z-index':-1, visibility:'hidden'});
};
var moveElement = function(x,y) {
element.css({
transform: 'matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, '+x+', '+y+', 0, 1)', 'z-index': 99999, 'visibility': 'visible',
'-webkit-transform': 'matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, '+x+', '+y+', 0, 1)',
'-ms-transform': 'matrix(1, 0, 0, 1, '+x+', '+y+')'
//,margin: '0' don't monkey with the margin,
});
};
var absorbEvent_ = function (event) {
var e = event;//.originalEvent;
e.preventDefault && e.preventDefault();
e.stopPropagation && e.stopPropagation();
e.cancelBubble = true;
e.returnValue = false;
return false;
};
initialize();
}
};
}])
.directive('ngPreventDrag', ['$parse', '$timeout', function ($parse, $timeout) {
return {
restrict: 'A',
link: function (scope, element, attrs) {
var initialize = function () {
element.attr('draggable', 'false');
toggleListeners(true);
};
var toggleListeners = function (enable) {
// remove listeners
if (!enable)return;
// add listeners.
element.on('mousedown touchstart touchmove touchend touchcancel', absorbEvent_);
};
var absorbEvent_ = function (event) {
var e = event.originalEvent;
e.preventDefault && e.preventDefault();
e.stopPropagation && e.stopPropagation();
e.cancelBubble = true;
e.returnValue = false;
return false;
};
initialize();
}
};
}])
.directive('ngCancelDrag', [function () {
return {
restrict: 'A',
link: function (scope, element, attrs) {
element.find('*').attr('ng-cancel-drag', 'ng-cancel-drag');
}
};
}])
.directive('ngDragScroll', ['$window', '$interval', '$timeout', '$document', '$rootScope', function($window, $interval, $timeout, $document, $rootScope) {
return {
restrict: 'A',
link: function(scope, element, attrs) {
var intervalPromise = null;
var lastMouseEvent = null;
var config = {
verticalScroll: attrs.verticalScroll || true,
horizontalScroll: attrs.horizontalScroll || true,
activationDistance: attrs.activationDistance || 75,
scrollDistance: attrs.scrollDistance || 15
};
var reqAnimFrame = (function() {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
function( /* function FrameRequestCallback */ callback, /* DOMElement Element */ element ) {
window.setTimeout(callback, 1000 / 60);
};
})();
var animationIsOn = false;
var createInterval = function() {
animationIsOn = true;
function nextFrame(callback) {
var args = Array.prototype.slice.call(arguments);
if(animationIsOn) {
reqAnimFrame(function () {
$rootScope.$apply(function () {
callback.apply(null, args);
nextFrame(callback);
});
})
}
}
nextFrame(function() {
if (!lastMouseEvent) return;
var viewportWidth = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
var viewportHeight = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
var scrollX = 0;
var scrollY = 0;
if (config.horizontalScroll) {
// If horizontal scrolling is active.
if (lastMouseEvent.clientX < config.activationDistance) {
// If the mouse is on the left of the viewport within the activation distance.
scrollX = -config.scrollDistance;
}
else if (lastMouseEvent.clientX > viewportWidth - config.activationDistance) {
// If the mouse is on the right of the viewport within the activation distance.
scrollX = config.scrollDistance;
}
}
if (config.verticalScroll) {
// If vertical scrolling is active.
if (lastMouseEvent.clientY < config.activationDistance) {
// If the mouse is on the top of the viewport within the activation distance.
scrollY = -config.scrollDistance;
}
else if (lastMouseEvent.clientY > viewportHeight - config.activationDistance) {
// If the mouse is on the bottom of the viewport within the activation distance.
scrollY = config.scrollDistance;
}
}
if (scrollX !== 0 || scrollY !== 0) {
// Record the current scroll position.
var currentScrollLeft = ($window.pageXOffset || $document[0].documentElement.scrollLeft);
var currentScrollTop = ($window.pageYOffset || $document[0].documentElement.scrollTop);
// Remove the transformation from the element, scroll the window by the scroll distance
// record how far we scrolled, then reapply the element transformation.
var elementTransform = element.css('transform');
element.css('transform', 'initial');
$window.scrollBy(scrollX, scrollY);
var horizontalScrollAmount = ($window.pageXOffset || $document[0].documentElement.scrollLeft) - currentScrollLeft;
var verticalScrollAmount = ($window.pageYOffset || $document[0].documentElement.scrollTop) - currentScrollTop;
element.css('transform', elementTransform);
lastMouseEvent.pageX += horizontalScrollAmount;
lastMouseEvent.pageY += verticalScrollAmount;
$rootScope.$emit('draggable:_triggerHandlerMove', lastMouseEvent);
}
});
};
var clearInterval = function() {
animationIsOn = false;
};
scope.$on('draggable:start', function(event, obj) {
// Ignore this event if it's not for this element.
if (obj.element[0] !== element[0]) return;
if (!animationIsOn) createInterval();
});
scope.$on('draggable:end', function(event, obj) {
// Ignore this event if it's not for this element.
if (obj.element[0] !== element[0]) return;
if (animationIsOn) clearInterval();
});
scope.$on('draggable:move', function(event, obj) {
// Ignore this event if it's not for this element.
if (obj.element[0] !== element[0]) return;
lastMouseEvent = obj.event;
});
}
};
}]);

14
www/templates/spiel3.html Normal file
View File

@ -0,0 +1,14 @@
<ion-view view-title="Das Tier macht...">
<ion-content class="padding">
<div class="row text-center">
<ul class="draglist">
<li ng-repeat="spiel in spiele" ng-drop="true" ng-drop-success="onDropComplete($index, $data,$event)">
<div ng-drag="true" ng-drag-data="spiel" ng-class="spiel.name">
<img class="myborder" src="img/{{ spiel.bild }}"width="96" height="96" alig="center" ng-click="play('/android_asset/www/sounds/' + spiel.sound1)">
</div>
</li>
</ul>
</div>
</ion-content>
</ion-view>

5
www/templates/tab-dash.html
View File

@ -11,5 +11,10 @@
<img class="myborder" src="img/schaf.jpg" height="128" width="128" ng-click="starte_spiel2()">
</div>
</div>
<div class="row">
<div style="width: 100%; text-align: center;" class="col">
<img class="myborder" src="img/schaf.jpg" height="128" width="128" ng-click="starte_spiel3()">
</div>
</div>
</ion-content>
</ion-view>

8
www/templates/tabs.html
View File

@ -14,9 +14,13 @@ navigation history that also transitions its views in and out.
<ion-nav-view name="tab-spiel1"></ion-nav-view>
</ion-tab>
<ion-tab title="Das Tier macht..." icon="
ion-music-note" href="#/tab/spiel2">
<ion-tab title="Das Tier macht..." icon="ion-music-note" href="#/tab/spiel2">
<ion-nav-view name="tab-spiel2"></ion-nav-view>
</ion-tab>
<ion-tab title="Tier Puzzel" icon="ion-music-note" href="#/tab/spiel3">
<ion-nav-view name="tab-spiel3"></ion-nav-view>
</ion-tab>
</ion-tabs>