代码修改只显示修改部分：要求用户在UserWidget界面点击QComboBox选择模式SQlite的Status表内数据改变点击Lights界面数据同时被更新#include userswidgeth#include ui_userswidgeth#include sqliteh#include lightsh#include airconditionh#include curtainsh#in

#include "userswidget.h" #include "ui_userswidget.h" #include "sqlite.h" #include "lights.h" #include "aircondition.h" #include "curtains.h" #include "humidiffer.h" #include "information.h" #include "procession.h" #include "QCloseEvent" #include "QComboBox" #include "QMessageBox"

UsersWidget::UsersWidget(int userid,QWidget *parent) : QWidget(parent), ui(new Ui::UsersWidget) { ui->setupUi(this); displayUsersWidget(); connect(ui->lights,&QToolButton::clicked,this,[=]{ Lights *w = new Lights(userid); w->show();}); connect(ui->air_condition,&QToolButton::clicked,this,[=]{ AirCondition *w = new AirCondition(userid); w->show();}); connect(ui->curtains,&QToolButton::clicked,this,[=]{ Curtains *w = new Curtains(userid); w->show();}); connect(ui->humidifiers,&QToolButton::clicked,this,[=]{ Humidiffer *w = new Humidiffer(userid); w->show();}); connect(ui->tables,&QToolButton::clicked,this,[=]{ Information *w = new Information; w->show();}); connect(ui->wifi,&QToolButton::clicked,this,[=]{ Procession *w = new Procession; w->show();}); connect(ui->mode, QOverload<const QString&>::of(&QComboBox::currentIndexChanged), this, [this](const QString& mode){ on_modeComboBox_currentIndexChanged(mode); }); connect(ui->mode, QOverload::of(&QComboBox::currentIndexChanged), this, [this](int index){ on_modeComboBox_currentIndexChanged(index); }); }

UsersWidget::~UsersWidget() { delete ui; }

void UsersWidget::displayUsersWidget() { setWindowTitle("智能家居总览图"); setFixedSize(900,600);

}

void UsersWidget::on_modeComboBox_currentIndexChanged(const QString &mode) { if (mode == "睡眠模式") { updateSmartHomeStatus(userid, "智能灯", "开启", "20"); updateSmartHomeStatus(userid, "空调", "开启", "27"); updateSmartHomeStatus(userid, "加湿器", "开启", "50"); updateSmartHomeStatus(userid, "窗帘", "开启", "100");

} else if (mode == "日常模式") {
    updateSmartHomeStatus(userid, "智能灯", "开启", "80");
    updateSmartHomeStatus(userid, "空调", "开启", "25");
    updateSmartHomeStatus(userid, "加湿器", "开启", "60");
    updateSmartHomeStatus(userid, "窗帘", "开启", "50");
} else if (mode == "节能模式") {
    updateSmartHomeStatus(userid, "智能灯", "开启", "50");
    updateSmartHomeStatus(userid, "空调", "开启", "26");
    updateSmartHomeStatus(userid, "加湿器", "开启", "40");
    updateSmartHomeStatus(userid, "窗帘", "开启", "30");
}

}

void UsersWidget::on_modeComboBox_currentIndexChanged(int index) { if (index == 0) { updateSmartHomeStatus(userid, "智能灯", "开启", "20"); updateSmartHomeStatus(userid, "空调", "开启", "27"); updateSmartHomeStatus(userid, "加湿器", "开启", "50"); updateSmartHomeStatus(userid, "窗帘", "开启", "100");

} else if (index == 1) {
    updateSmartHomeStatus(userid, "智能灯", "开启", "80");
    updateSmartHomeStatus(userid, "空调", "开启", "25");
    updateSmartHomeStatus(userid, "加湿器", "开启", "60");
    updateSmartHomeStatus(userid, "窗帘", "开启", "50");
} else if (index == 2) {
    updateSmartHomeStatus(userid, "智能灯", "开启", "50");
    updateSmartHomeStatus(userid, "空调", "开启", "26");
    updateSmartHomeStatus(userid, "加湿器", "开启", "40");
    updateSmartHomeStatus(userid, "窗帘", "开启", "30");
}

}

void UsersWidget::closeEvent(QCloseEvent *e) { if(e->spontaneous()) { //窗口关闭时弹出的提示窗口 QMessageBox::StandardButton reply;

    reply = QMessageBox::information(this,"提示","确认退出智能管家系统？",QMessageBox::Yes|QMessageBox::No);
    if(reply == QMessageBox::Yes){
        //若用户点击确认，则接收这个事件,当前窗口会关闭
        e->accept();
     }else{
        //若用户点击取消，则忽略这个事件，当前窗口不会关闭
        e->ignore();
    }
}

}

#include "lights.h" #include "ui_lights.h" #include "switchform.h" #include "sqlite.h" #include #include #include #include #include

Lights::Lights(int userid,QWidget *parent) : QWidget(parent), ui(new Ui::Lights), userid(userid)//保证userid无变化 { ui->setupUi(this); lightsWidget(); //连接开关组件的信号和自定义的槽函数 connect(ui->SwitchStatus,&SwitchForm::statusChanged,this,&Lights::switchButton_status);

// 连接完成按钮的clicked信号和自定义的槽函数
connect(ui->Finished, &QPushButton::clicked, this,[=]{
    if(ui->SwitchStatus->checked())
    {
        QString brighteness = QString::number(ui->ctrlform->getValue());
        qDebug()<<brighteness<<userid;
        updateSmartHomeStatus(userid,QString("智能灯"),QString("开启"),brighteness);
    }else
    {
        qDebug()<<"智能灯未打开！";
        updateSmartHomeStatus(userid,QString("智能灯"),QString("关闭"),QString("0"));
    }
});
// 加载上次更改的状态
    loadLastStatus();

}

Lights::~Lights() { delete ui; }

void Lights::lightsWidget() { setWindowTitle("智能灯设置"); //设置ui组件背景 setAutoFillBackground(true); QPalette palette=this->palette(); QPixmap pixmap(":/user/image/image/light.jpg"); palette.setBrush(QPalette::Window, QBrush(pixmap)); setPalette(palette); setFixedSize(600,400); }

bool Lights::switchButton_status(bool checked) { qDebug()<<checked; flag=checked; return flag; }

void Lights::showEvent(QShowEvent *event) { // 当页面显示时，加载上次更改的状态 loadLastStatus(); event->accept(); }

void Lights::hideEvent(QHideEvent *event) { saveLastStatus(); event->accept(); }

void Lights::closeEvent(QCloseEvent *event) { // 隐藏窗口而不是关闭 hide(); event->ignore(); }

void Lights::loadLastStatus() { qDebug()<userid; QString state = getLastState(this->userid); QString brightness = getLastBrightness(this->userid); qDebug()<<brightness; if (state=="开启") { ui->SwitchStatus->setChecked(true); ui->ctrlform->setValue(brightness.toInt()); } else { ui->SwitchStatus->setChecked(false); ui->ctrlform->setValue(0); } qDebug()<<brightness.toInt();

// 如果界面上显示开启状态，但存入数据库的设备状态为关闭，则更新数据库中的状态为开启
    if (ui->SwitchStatus->checked() && state == "关闭") {
        updateSmartHomeStatus(userid, QString("智能灯"), QString("开启"), brightness);
    }

}

void Lights::saveLastStatus() { qDebug()<userid; QString brightness = QString::number(ui->ctrlform->getValue()); updateLastBrightness(this->userid, brightness);

// 如果界面上显示关闭状态，但存入数据库的设备状态为开启，则更新数据