Disable window offset when keyboard appears for ios app - ios

Question

Disable window offset when keyboard appears for ios app
I would like to disable the window offset when the keyboard appears for the ios app. For an android app, this is done via AndroidManifest.xml:
<activity ... android:windowSoftInputMode="adjustResize">
When the keyboard appears, the components do not move from their places.
Is it possible to get this behavior for ios?

Answer 1

Found the solution here in the comments:
iOS Make window-scrolling optional for Items
https://bugreports.qt.io/browse/QTBUG-80790
(this workaround works well for me)
========================
Adrian Eddy added a comment - 11 Apr '20 01:44 - edited
I found a workaround that works with QML . The idea is to install an event filter on QQuickItem and listen for a QEvent::InputMethodQuery with Qt::InputMethodQuery::ImCursorRectangle. Then we set its value to empty QRectF and Qt will no longer scroll the view to show that text field.
in C++ prepare a class and expose it to QML:
class Api : public QObject {
Q_OBJECT
....
public:
Q_INVOKABLE void setupImEventFilter(QQuickItem *item) {
static thread_local ImFixer imf;
item->installEventFilter(&imf);
}
}
// somewhere in main():
view.rootContext()->setContextProperty("api", new Api());
We'll need the actual event filter too:
class ImFixer :
public QObject {
Q_OBJECT
protected:
bool eventFilter(QObject *obj, QEvent *event) override {
if (event->type() == QEvent::InputMethodQuery) {
QInputMethodQueryEvent *imEvt = static_cast<QInputMethodQueryEvent *>(event);
if (imEvt->queries() == Qt::InputMethodQuery::ImCursorRectangle) {
imEvt->setValue(Qt::InputMethodQuery::ImCursorRectangle, QRectF());
return true;
}
}
return QObject::eventFilter(obj, event);
}
};
Finally in QML add:
TextField {
id: tf;
...
Component.onCompleted: api.setupImEventFilter(tf);
}