如何使用Qt/C++控件(而不是QML)从Android摄像头获取图像

#include <QCamera>
#include <QCameraViewfinder>
#include <QCameraImageCapture>

QCamera *camera = new QCamera(this);
QCameraViewfinder *viewfinder = new QCameraViewfinder(this);
camera->setViewfinder(viewfinder);

QCameraImageCapture *imageCapture = new QCameraImageCapture(camera);
connect(imageCapture, &QCameraImageCapture::imageCaptured, this, &YourClass::onImageCaptured);

camera->start();

imageCapture->capture();

void YourClass::onImageCaptured(int id, const QImage &image)
{
    // 处理图像数据
    // 例如，将图像显示在QLabel控件上
    QLabel *label = new QLabel(this);
    label->setPixmap(QPixmap::fromImage(image));
    label->show();
}