How to access to a listview element
-
I need to get a variable status from each items in a listview.
My function isfor (var count= 0; count< listViewModel.count; count++) { console.log(count, listView.contentItem.children[count]) }The output is
qml: 0 QQBlueBus_QMLTYPE_109(0x556e40f212a0) qml: 1 QQBlueBus_QMLTYPE_109(0x556e40f0c4a0) qml: 2 QQBlueBus_QMLTYPE_109(0x556e40f1e590) qml: 3 QQBlueBus_QMLTYPE_109(0x556e40f349a0) qml: 4 QQBlueBus_QMLTYPE_109(0x556e40f63f60) qml: 5 QQBlueBus_QMLTYPE_109(0x556e40f5a720) qml: 6 QQBlueBus_QMLTYPE_109(0x556e40f6dc30) qml: 7 QQBlueBus_QMLTYPE_109(0x556e40f80c20) qml: 8 QQBlueBus_QMLTYPE_109(0x556e40f93c10) qml: 9 QQBlueBus_QMLTYPE_109(0x556e40fb4f50) qml: 10 QQBlueBus_QMLTYPE_109(0x556e40fc8350) qml: 11 QQBlueBus_QMLTYPE_109(0x556e40ff8380) qml: 12 QQBlueBus_QMLTYPE_109(0x556e40feee50) qml: 13 QQBlueBus_QMLTYPE_109(0x556e4101e390) qml: 14 QQBlueBus_QMLTYPE_109(0x556e41014f90) qml: 15 QQuickItem(0x556e41050610) qml: 16 undefined qml: 17 undefined qml: 18 undefined qml: 19 undefined qml: 20 undefined qml: 21 undefined qml: 22 undefined qml: 23 undefined qml: 24 undefined qml: 25 undefined qml: 26 undefined qml: 27 undefined qml: 28 undefined qml: 29 undefined qml: 30 undefined qml: 31 undefined qml: 32 undefined qml: 33 undefined qml: 34 undefined qml: 35 undefined qml: 36 undefined qml: 37 undefined qml: 38 undefined qml: 39 undefined qml: 40 undefined qml: 41 undefined qml: 42 undefined qml: 43 undefined qml: 44 undefined qml: 45 undefined qml: 46 undefined qml: 47 undefined qml: 48 undefined qml: 49 undefined qml: 50 undefined qml: 51 undefined qml: 52 undefined qml: 53 undefined qml: 54 undefined qml: 55 undefined qml: 56 undefined qml: 57 undefined qml: 58 undefined qml: 59 undefined qml: 60 undefined qml: 61 undefined qml: 62 undefined qml: 63 undefined qml: 64 undefined qml: 65 undefined qml: 66 undefined qml: 67 undefined qml: 68 undefined qml: 69 undefined qml: 70 undefined qml: 71 undefined qml: 72 undefined qml: 73 undefined qml: 74 undefined qml: 75 undefined qml: 76 undefined qml: 77 undefined qml: 78 undefined qml: 79 undefined qml: 80 undefined qml: 81 undefined qml: 82 undefinedbut it is happening something strange.
I can access at only 15 elements on my listview the others are undefined.
Where is the error? -
@mrdebug said in How to access to a listview element:
listViewModel
what's in listViewModel
what model are you using
show us how you are creating/getting the data - have you proved what's in the container differs from your log? The locals and watches window should let you step through that.Have you read? http://doc.qt.io/qt-5/qtquick-modelviewsdata-modelview.html#qml-data-models
That page has the following headings, and further links. Here's a quick summary but I suggest you expose yourself to that page above if you haven't already.
List Model http://doc.qt.io/qt-5/qml-qtqml-models-listmodel.html
XML Model http://doc.qt.io/qt-5/qml-qtquick-xmllistmodel-xmllistmodel.html
Object Model http://doc.qt.io/qt-5/qtquick-views-example.html#objectmodel
Integers as Models ie:ListView { anchors.fill: parent model: 5 delegate: itemDelegate }Object Instances as Models (
C++ Data Models http://doc.qt.io/qt-5/qtquick-modelviewsdata-cppmodels.html -
This is my code:
ScrollView { id: scrollView1 anchors.fill: parent ListView { id: listView; anchors.rightMargin: 1 anchors.leftMargin: 1 anchors.left: parent.left anchors.bottom: parent.bottom anchors.top: parent.top spacing: 1 model: listViewModel; delegate: listViewDelegate; } } Component { id: listViewDelegate; QQAdc { width: parent.width } } ListModel { id: listViewModel; }to add element
listViewModel.append({sDescription: sDescription, sValue1: sValue1})Now I need to get a property from each element.
