Swipe gesture in Android not working?
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I am trying to make a application and I am trying out gestures, the funny thing is that Swipe gesture doesn't do anything. I made a basic new Qt MainWindow application with the following
@MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
grabGesture(Qt::SwipeGesture);
grabGesture(Qt::TapGesture);
grabGesture(Qt::TapAndHoldGesture);
}bool MainWindow::event(QEvent event){
if (event->type() == QEvent::Gesture)
return gestureEvent(static_cast<QGestureEvent>(event));
return QWidget::event(event);
}bool MainWindow::gestureEvent(QGestureEvent *event){
if (QGesture *swipe = event->gesture(Qt::SwipeGesture))
swipeT(static_cast<QSwipeGesture *>(swipe));
// commented out the tap gesture to check if tap and hold gesture works properly
/if(QGesture tap=event->gesture(Qt::TapGesture))
tapG(static_cast<QTapGesture>(tap));/
if(QGesture tapnh=event->gesture(Qt::TapAndHoldGesture))
tapNH(static_cast<QTapAndHoldGesture>(tapnh));
return true;
}void MainWindow::tapNH(QTapAndHoldGesture *gesture){
if(gesture->state()==Qt::GestureFinished)
QMessageBox::information(this,"Tap and Hold", "Merge");
}void MainWindow::tapG(QTapGesture *gesture){
if(gesture->state()==Qt::GestureFinished)
QMessageBox::information(this,"Tap","Tap merge");
}void MainWindow::swipeT(QSwipeGesture *gesture){
if (gesture->state() == Qt::GestureFinished) {
QMessageBox::information(this,"Swipe","Merge");
//comented out direction to check if it is the direction that's causing the problem
/if (gesture->horizontalDirection() == QSwipeGesture::Left) {
QMessageBox::information(this,"Swipe","Stanga");
}
else if(gesture->horizontalDirection()==QSwipeGesture::Right){
QMessageBox::information(this,"Swipe","dreapta");
}/
}
}@I am testing it on a Android 2.3 tablet....and it has a multi touch screen.
Using Qt 5.2.1 for Android, working on Ubuntu 14.04.Someone said on a post of mine that Qt gestures are a bit buggy, but surely there should be a fix/alternative way of achieving this, seeing how gestures are the main ways of navigating on a tablet/smartphone, can someone help me/point me in the right direction?
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If you want gestures just to scroll some widgets, the easiest way is to use QScroller. All it requires is to add a single line to your code :-)
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Much easier to use QtQuick module, then. But the QScroller sollution should still work, if you put your screens in a QScrollArea.
