Show Last element in QListView

问题

It sounds trivial, but I could not find the function to show the last added element in a QListView.

It works with a model

// Create model
model = new QStringListModel(this);

// Make data
QStringList List;
// Populate our model
model->setStringList(List);
// Glue model and view together
listView->setModel(model);

Elements are added with

void WidgetMessageList::addString(const QString & message)
{
    if(model->insertRow(model->rowCount())) {
        QModelIndex index = model->index(model->rowCount() - 1, 0);
        model->setData(index, message);        
    }
}

In this function the shown element should also be the last.

回答1:

QAbstractItemView::scrollTo

Scrolls the view if necessary to ensure that the item at index is visible. The view will try to position the item according to the given hint.

http://doc.qt.io/archives/qt-4.8/qabstractitemview.html#scrollTo

回答2:

1. Create a class attibute to hold the last index
2. Connect QAbstractItemModel::rowsInserted to a slot in your application
3. In the slot update the index accordingly

来源：https://stackoverflow.com/questions/52312714/show-last-element-in-qlistview