Get bound values from pressed List Item in UI5 controller - sapui5

Question

I'm a beginner to SAP Fiori (UI5) and trying to retrieve a value from a table made with sap.m.Table in SAP Web IDE. But I don't succeed. Anybody hints on how to get there?
<Table id="table0" items="{/Entity1_Set}">
<ColumnListItem detailPress=".onShowHello" type="DetailAndActive">
<Text id="text5" maxLines="0" text="{Id}" />
<Text id="text6" maxLines="0" text="{field1}" />
<Text id="text7" maxLines="0" text="{field2}" />
<Text id="text8" maxLines="0" text="Euro"/>
</ColumnListItem>
<columns>
<Column id="column0">
<Label id="label0" text="Floor"/>
</Column>
</columns>
</Table>
sap.ui.define([
"sap/ui/core/mvc/Controller",
"sap/m/MessageToast",
], function(Controller, MessageToast) {
"use strict";
return Controller.extend("QuickStartApplication.controller.View1", {
onShowHello: function(){
MessageToast.show("Hello World!");
},
});
});
In the "hello world"-MessageToast, I would like to display values of the fields in my table.

Answer 1

You can pass parameters in the function, which is called during an event.
Please see also https://sapui5.hana.ondemand.com/#docs/api/symbols/sap.m.ListItemBase.html#event:detailPress
Using these parameters, you can access the bound data.
Please see the following code on how to read the binding context of the ColumnListItem:
detailPress : function(oEventParams){
var oListItem = oEventParams.getSource();
var oBindingContext = oListItem.getBindingContext(); var sSomePropertyValue = oBindingContext.getProperty("<nameOfProperty>"); }
Using .getProperty, you can access your field values.