SmartPDCode/Qt/SmartPDU_QT/main.cpp

#include "mainwidget.h"
#include <QApplication>

MainWidget* MainWidgetInstance = nullptr;

/*
extern "C" JNIEXPORT void JNICALL
Java_usb_UsbPermissionReceiver_nativeOnUsbPermissionGranted(JNIEnv *env, jobject, jobject usbDevice) {
    // 这里可以处理权限授予后的逻辑
    if(MainWidgetInstance)MainWidgetInstance->onUsbPermissionGranted(env, usbDevice);

    // 将UsbDevice转换为QAndroidJniObject以便进一步操作
    QAndroidJniObject device = QAndroidJniObject::fromLocalRef(usbDevice);

    // 执行打开串口等操作...
}

extern "C" JNIEXPORT void JNICALL
Java_usb_UsbPermissionReceiver_nativeOnUsbPermissionDenied(JNIEnv *env, jobject, jobject usbDevice) {
    // 这里可以处理权限被拒绝后的逻辑
    if(MainWidgetInstance)MainWidgetInstance->onUsbPermissionDenied(env, usbDevice);
    // 将UsbDevice转换为QAndroidJniObject以便进一步操作
    QAndroidJniObject device = QAndroidJniObject::fromLocalRef(usbDevice);

    // 显示消息给用户或其他处理...
}

void registerUsbPermissionReceiver() {
    // 定义广播接收器的动作字符串
    QAndroidJniObject action = QAndroidJniObject::fromString("android.hardware.usb.action.USB_PERMISSION");

    // 创建广播接收器对象
    QAndroidJniObject receiver(
        "usb/UsbPermissionReceiver", "()V"
    );

    // 创建 IntentFilter 并添加动作
    QAndroidJniObject filter("android/content/IntentFilter", "()V");
    filter.callMethod<void>("addAction", "(Ljava/lang/String;)V", action.object<jstring>());

    // 获取当前 Activity 的上下文
    QAndroidJniObject activity = QtAndroid::androidActivity();
    if (!activity.isValid()) {
        qDebug() << "Failed to get Android activity.";
        return;
    }

    QAndroidJniObject context = activity.callObjectMethod("getApplicationContext", "()Landroid/content/Context;");
    if (!context.isValid()) {
        qDebug() << "Failed to get application context.";
        return;
    }

    // 注册广播接收器
    activity.callObjectMethod(
        "registerReceiver",
        "(Landroid/content/BroadcastReceiver;Landroid/content/IntentFilter;)Landroid/content/Intent;",
        receiver.object<jobject>(),
        filter.object<jobject>()
    );
}
*/

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    //registerUsbPermissionReceiver();
    MainWidget w;
    MainWidgetInstance=&w;
    w.show();
    return a.exec();
}