我正在使用离子框架,我有一个与自定义指令绑定的搜索图标。它就像Whatsapp的搜索图标一样,当你点击它时隐藏了视图标题并出现了搜索输入文本。
我的问题是视图标题未被隐藏。我正在使用:
<ion-nav-title>{{viewTitle}}</ion-nav-title>
两个更改我正在使用的视图标题:
title = $ionicNavBarDelegate.getTitle();
$ionicNavBarDelegate.setTitle('');
当我调试这一点时,我可以看到title变量未定义。任何人都可以帮我这个吗?
查看:
<ion-view>
<ion-nav-title>{{viewTitle}}</ion-nav-title>
<search-bar ng-model="search"></search-bar>
<ion-content>
</ion-content>
</ion-view>
搜索指令:
.directive('searchBar', [function () {
return {
scope: {
ngModel: '='
},
require: ['^ionNavBar', '?ngModel'],
restrict: 'E',
replace: true,
template: '<ion-nav-buttons side="right">'+
'<div class="searchBar">'+
'<div class="searchTxt" ng-show="ngModel.show">'+
'<div class="bgdiv"></div>'+
'<div class="bgtxt">'+
'<input type="text" placeholder="Procurar..." ng-model="ngModel.txt">'+
'</div>'+
'</div>'+
'<i class="icon placeholder-icon" ng-click="ngModel.txt=\'\';ngModel.show=!ngModel.show"></i>'+
'</div>'+
'</ion-nav-buttons>',
compile: function (element, attrs) {
var icon=attrs.icon
|| (ionic.Platform.isAndroid() && 'ion-android-search')
|| (ionic.Platform.isIOS() && 'ion-ios7-search')
|| 'ion-search';
angular.element(element[0].querySelector('.icon')).addClass(icon);
return function($scope, $element, $attrs, ctrls) {
var navBarCtrl = ctrls[0];
$scope.navElement = $attrs.side === 'right' ? navBarCtrl.rightButtonsElement : navBarCtrl.leftButtonsElement;
};
},
controller: ['$scope','$ionicNavBarDelegate', function($scope,$ionicNavBarDelegate){
var title, definedClass;
$scope.$watch('ngModel.show', function(showing, oldVal, scope) {
if(showing!==oldVal) {
if(showing) {
if(!definedClass) {
var numicons=$scope.navElement.children().length;
angular.element($scope.navElement[0].querySelector('.searchBar')).addClass('numicons'+numicons);
}
title = $ionicNavBarDelegate.getTitle();
$ionicNavBarDelegate.setTitle('');
} else {
$ionicNavBarDelegate.setTitle(title);
}
} else if (!title) {
title = $ionicNavBarDelegate.getTitle();
}
});
}]
};
}])