Asus keyboard predictive text clear2/20/2023 On the Android platform, the textChanged() and textEdited() signals are not emitted by TextInput as long as predictive text input is enabled for the Android keyboard ( source). This solution is further complicated by two other bugs: For other cases, you could analyze what text was typed and take action based on the key used for that. For simple cases like to enable a button when the field contains text, these signals are enough. You cannot listen to Keys.onPressed / Keys.onReleased, but you can listen to the onTextEdited and onTextChanged signals of TextInput. This behavior is different from Qt desktop applications, where every keypress / key release event of a physical key is signaled by TextInput. ![]() The key events for this key are not emitted every time, but only when pressed in an empty TextField. The DEL key mentioned in the bug report is the key ⌫ (Delete / Backspace) of the Android keyboard, not Delete (which the Android keyboard does not have). ![]() The issue is not limited to Samsung devices as told in the bug report it's also happening on my Asus Nexus 7, for example. On Samsung devices, like tablets and smartphones, it is impossible to receive keys from the virtual keyboard, by using Keys.onPressed or Keys.onRelease, except for DEL and ENTER keys. This problem occurs because it is a missing functionality in Qt/Qml, see the following link for discussion about it and the following link for the report to Qt Īs the question author already found, this problem is due to missing functionality in Qt for Android (see QTBUG-40803): W/Qt (26304): kernel\qmetaobject.cpp:1458 (static bool QMetaObject::invokeMethod(QObject*, const char*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument)): QMetaObject::invokeMethod: No such method QQuickTextInput::inputMethodQuery(Qt::InputMethodQuery,QVariant) ![]() How to do to receive all keys in the TextInput/Keys.onPressed event handler? import QtQuick 2.2Ĭonsole.log("Key=" event.key " " event.text) Īn error is raised by Qt when I'm pressing a key on virtual keyboard, including the DEL key: This TextInput receives only the DEL key and not other keys from standard virtual keyboard. ![]() My Main QML page contains a TextInput with Keys.onPressed. System: Qt/QML 5.3.1 Android with Windows QtCreatorĭevice: Samsung Tab 3 8", with Android 4.1.2
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