Modification of the ArrayDataModel starting from C++

Hi, I have a ListView and an ArrayDataModel which is created/initialized in QML. I want to change(add, delete, etc.) the ArrayDataModel c ++.

How do I get there? Anyone kind enough to provide a code example? Thank you..

Container {
            id: mainContainer
            ListView {
                id: listView
                layout: StackListLayout {}

                dataModel: ArrayDataModel {
                    id: listArrayDataModel
                }
               .........
            }
 }

Hello

There are two different approaches to C++:

(1) dataModel looking at C++:
Get a pointer to ListView using findChild. Get its data model using the dataModel() function. Mount this dataModel to store in a variable member ArrayDataModel * then use its methods to add items.

(2) pass the C++ of QML class model:
Declare Q_INVOKABLE function in C++ which takes QObject * dataModel as its argument. Export an instance of the class where the function is declared to QML. In QML in onCreationComplete call this function and pass listView.dataModel. In the implementation of the function using qobject_cast(arg) to mount the argument of the ArrayDataModel, verify that the casting was successful and then store the result in a member variable.

If you need assistance implementation of Scripture above please approach you have chosen, and I will explain more about it.

Tags: BlackBerry Developers

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