早上好，
我有这个问题，我一直试图解决这个问题，我找不到答案，也找不到我的同事。
我的问题是我将JSON中的两个布尔值绑定到两个不同的可见属性。 JSON的初始值是正确绑定的，但是当修改我的json时，更改不会反映在我的视图中。
请注意，所有常量字符串都是正确的。
我的JSON初始化：
onInit : function(){
var inputModel = new sap.ui.model.json.JSONModel({
inputEditable: true,
formVisible: true
});
this.getView().setModel(inputModel, Constants.MODEL.USER_FINDER_HELP);
},
属性formVisible绑定：
new sap.ui.layout.form.SimpleForm({
editable: true,
layout: sap.ui.layout.form.SimpleFormLayout.ResponsiveGridLayout,
labelSpanXL: 1,
labelSpanL: 2,
labelSpanM: 2,
labelSpanS: 3,
visible:"{"+Constants.MODEL.USER_FINDER_HELP+">/formVisible}",
content: [
new sap.m.VBox({
visible : true,
items:[
new sap.m.HBox({
items: [
new sap.m.RadioButton({
groupName : "Group1",
text : "{"+Constants.MODEL.I18N+">completeName}",
select : [oController.controlCampos, oController],
selected : true,
}),
new sap.m.Input("inputNombre",{
enabled : "{"+Constants.MODEL.USER_FINDER_HELP+">/inputEditable}",
//type : sap.m.InputType.Text,
placeholder : "Introduzca nombre completo"
})
]
}),
new sap.m.HBox({
items : [
new sap.m.RadioButton({
groupName : "Group1",
text : "{"+Constants.MODEL.I18N+">user}",
}),
new sap.m.Input("inputUsuario",{
enabled :
{
path: Constants.MODEL.USER_FINDER_HELP+">/inputEditable",
formatter : formatter.generic.negate
},
//type : sap.m.InputType.Text,
placeholder : "Usuario" //TODO i18n
})
]
})
]
})
]
}).addStyleClass("scopeSelectorForm"),
new sap.m.Bar({
contentRight: [
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">filter}",
icon : "sap-icon://action",
visible: "{"+Constants.MODEL.USER_FINDER_HELP+">/formVisible}",
iconFirst: false,
press: [oController.filterAndExpand, oController]
}),
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">clean}",
icon: "sap-icon://action",
iconFirst: false,
visible: "{"+Constants.MODEL.USER_FINDER_HELP+">/formVisible}",
press: [oController.cleanForm, oController]
}),
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">hide}",
icon: "sap-icon://action",
iconFirst: false,
visible: "{"+Constants.MODEL.USER_FINDER_HELP+">/formVisible}",
press: [oController.hideOrShowForm, oController]
}),
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">show}",
icon: "sap-icon://action",
iconFirst: false,
visible: {
path:Constants.MODEL.USER_FINDER_HELP+">/formVisible",
formatter: formatter.generic.negate
},
press: [oController.hideOrShowForm, oController]
})
]
}).addStyleClass("greyBar"),
我改变财产的方法：
hideOrShowForm : function(evt){
var inputModel = this.getView().getModel(Constants.MODEL.USER_FINDER_HELP);
inputModel.setProperty("/formVisible", !(inputModel.getProperty("/formVisible")));
inputModel.updateBindings();
this.getView().invalidate();
}
总而言之，我的视图获取初始值（尝试使用false），但在我的代码中更改时不会更新。
谢谢！
修改
我正在分享我视图的其余代码，以防出现问题。
sap.ui.jsview("view.UserFinderHelp",{
getControllerName : function() {
return "controller.UserFinderHelp";
},
createContent : function(oController){
return new sap.m.Dialog({
draggable:true,
id: Constants.ID.USER_FINDER_HELP,
contentWidth: "50%",
contentHeight: "80%",
showHeader: true,
verticalScrolling:false,
horizontalScrolling:false,
escapeHandler: oController.onClose,
customHeader: new sap.m.Bar({
contentLeft: [
new sap.m.Text({
text: "{"+Constants.MODEL.I18N+">usersFinder}"
})
],
contentRight: [
new sap.m.Button({
icon: "sap-icon://decline",
customData:[
new sap.ui.core.CustomData({
key: "viewId",
value: this.getId()
})
],
press: [oController.onClose, oController]
})
],
}).addStyleClass("sapMBarTitle"),
content:[
new sap.m.Bar({
contentLeft:[
new sap.m.Text({
text: "{"+Constants.MODEL.I18N+">finderParameters}"
})
]
}).addStyleClass("sapMBarSubTitle"),
new sap.ui.layout.form.SimpleForm({
editable: true,
layout: sap.ui.layout.form.SimpleFormLayout.ResponsiveGridLayout,
labelSpanXL: 1,
labelSpanL: 2,
labelSpanM: 2,
labelSpanS: 3,
visible:"{"+Constants.MODEL.USER_FINDER_HELP+">/formVisible}",
content: [
new sap.m.VBox({
visible : true,
items:[
new sap.m.HBox({
items: [
new sap.m.RadioButton({
groupName : "Group1",
text : "{"+Constants.MODEL.I18N+">completeName}",
select : [oController.controlCampos, oController],
selected : true,
}),
new sap.m.Input("inputNombre",{
enabled : "{"+Constants.MODEL.USER_FINDER_HELP+">/inputEditable}",
//type : sap.m.InputType.Text,
placeholder : "Introduzca nombre completo"
})
]
}),
new sap.m.HBox({
items : [
new sap.m.RadioButton({
groupName : "Group1",
text : "{"+Constants.MODEL.I18N+">user}",
}),
new sap.m.Input("inputUsuario",{
enabled :
{
path: Constants.MODEL.USER_FINDER_HELP+">/inputEditable",
formatter : formatter.generic.negate
},
//type : sap.m.InputType.Text,
placeholder : "Usuario" //TODO i18n
})
]
})
]
})
]
}).addStyleClass("scopeSelectorForm"),
new sap.m.Bar({
contentRight: [
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">search}",
icon : "sap-icon://action",
visible: "{"+Constants.MODEL.USER_FINDER_HELP+">/formVisible}",
iconFirst: false,
press: [oController.filterAndExpand, oController]
}),
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">clean}",
icon: "sap-icon://action",
iconFirst: false,
visible: "{"+Constants.MODEL.USER_FINDER_HELP+">/formVisible}",
press: [oController.cleanForm, oController]
}),
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">hide}",
icon: "sap-icon://action",
iconFirst: false,
visible: "{"+Constants.MODEL.USER_FINDER_HELP+">/formVisible}",
press: [oController.hideOrShowForm, oController]
}),
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">show}",
icon: "sap-icon://action",
iconFirst: false,
visible: {
path:Constants.MODEL.USER_FINDER_HELP+">/formVisible",
formatter: formatter.generic.negate
},
press: [oController.hideOrShowForm, oController]
})
]
}).addStyleClass("greyBar"),
new sap.ui.table.Table({
//rows : "{"+Constants.MODEL.USER_FINDER_HELP_RESULTS+">/userScopeList}",
items : {
path: Constants.MODEL.USER_FINDER_HELP_RESULTS+">/userScopeList",
template : new sap.m.ColumnListItem({
cells:[
new sap.m.Text({
text: "{"+Constants.MODEL.USER_FINDER_HELP_RESULTS+">login}"
}),
new sap.m.Text({
text: "{"+Constants.MODEL.USER_FINDER_HELP_RESULTS+">name}"
})
]
})
},
columns : [
new sap.ui.table.Column({
label : new sap.m.Label({
text : "{"+Constants.MODEL.I18N+">user}"
})
}),
new sap.ui.table.Column({
label : new sap.m.Label({
text : "{"+Constants.MODEL.I18N+">completeName}"
})
})
]
})
],
buttons : [
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">Continue}"
}),
new sap.m.Button({
text: "{"+Constants.MODEL.I18N+">cancel}",
press: [oController.onClose, oController]
})
]
}).addEventDelegate({
onBeforeRendering: function(evt){
sap.ui.getCore().byId(Constants.ID.APP).addDependent(evt.srcControl);
},
}).addStyleClass("UserFinderDialog")
}
});
答案 0 :(得分：1)
如果双向绑定处于活动状态，则应该没问题。
参见示例：example
sap.ui.controller("myController", {
onInit: function() {
var jsonData = {
text: "secondButton",
formVisible: true
};
var jsonModel = new sap.ui.model.json.JSONModel(jsonData);
this.getView().setModel(jsonModel, "myModel");
},
hideOrShowForm: function(evt) {
var inputModel = this.getView().getModel("myModel");
inputModel.setProperty("/formVisible", !(inputModel.getProperty("/formVisible")));
}
});
sap.ui.view({
viewContent: jQuery('#myXml').html(),
type: sap.ui.core.mvc.ViewType.XML
}).placeAt("content");<script id="sap-ui-bootstrap" src="https://sapui5.hana.ondemand.com/resources/sap-ui-core.js" data-sap-ui-theme="sap_bluecrystal" data-sap-ui-libs="sap.m, sap.ui.layout,sap.suite.ui.commons, sap.ui.commons, sap.ui.table" data-sap-ui-xx-bindingSyntax="complex">
</script>
<script id="myXml" type="text/xmldata">
<mvc:View xmlns:core="sap.ui.core" xmlns:mvc="sap.ui.core.mvc" xmlns="sap.m" controllerName="myController" displayBlock="true">
<App>
<Page>
<Panel>
<Button text="Press" type="None" iconFirst="true" width="auto" enabled="true" iconDensityAware="false" press="hideOrShowForm" />
<Button text="{myModel>/text}" type="None" iconFirst="true" width="auto" enabled="true" visible="{myModel>/formVisible}" iconDensityAware="false" />
</Panel>
</Page>
</App>
</mvc:View>
</script>
<body class="sapUiBody" role="application">
<div id="content"></div>
</body>
问候
答案 1 :(得分：1)
我终于找到了为什么会这样。因为我的视图是一个用ComponentLoader调用的Dialog。我不认为我实际上是将它绑定到调用我的视图。
相反，我只是像这样绑定它：
this.getView().getContent()[0].setModel(inputModel, Constants.MODEL.USER_FINDER_HELP);
感谢那些帮助我的人！