void MainWindow::moveAgvs_(){ timer =new QTimer(this); timer->start(1000); connect(timer, &QTimer::timeout, this, &MainWindow::moveAgvs);} void MainWindow::moveAgvs() { Astar astar; std::vector<Node*> path; std::vector<std::vector<Node*>> paths(agvs.size()); // 得到agv的路綫 for (int i = 0; i < agvs.size(); i++) { Node* start_node = new Node(agvs[i].getCurrentX(), agvs[i].getCurrentY()); Node* end_node; if (agvs[i].getLoad() == false) { end_node = new Node(agvs[i].getStartX(), agvs[i].getStartY()); } else { end_node = new Node(agvs[i].getEndX(), agvs[i].getEndY()); } std::vector<Node*> path = astar.getPath(start_node, end_node); paths[i] = path; //輸出agv的路綫 std::cout << "AGV " << i << " path: "; for (int j = 0; j < path.size(); j++) { std::cout << "(" << path[j]->x << ", " <<path[j]->y << ")"; if (j != path.size() - 1) { std::cout << " -> "; } } std::cout << std::endl; } for (int i = 0; i < agvs.size(); i++) { if (! paths[i].empty()) { Node* next_node = paths[i][0]; float speed = agvs[i].getSpeed(); float distance = sqrt(pow(next_node->x - agvs[i].getCurrentX(), 2) + pow(next_node->y - agvs[i].getCurrentY(), 2)); float time = distance / speed * 1000; QTimer::singleShot(time, this, [&, i, next_node]() { agvs[i].setCurrentX(next_node->x); agvs[i].setCurrentY(next_node->y); std::cout << "AGV " << agvs[i].getid() << " current_x: " << agvs[i].getCurrentX() << " current_y: " << agvs[i].getCurrentY() <<std::endl; this->update(); if (next_node->x == agvs[i].getEndX() && next_node->y == agvs[i].getEndY()) { //task_to_agv(i); } }); } } }，沒有運行報錯

根据您提供的代码，我看到您定义了两个函数 `moveAgvs_` 和 `moveAgvs`。您连接了一个 `timer` 对象的 `timeout` 信号到 `moveAgvs` 槽函数，但是在 `moveAgvs_` 函数中没有定义 `timer` 对象。我猜测您可能是想在 `moveAgvs_` 函数中创建 `timer` 对象并启动它，再将它的 `timeout` 信号连接到 `moveAgvs` 槽函数。所以您可以将 `moveAgvs_` 函数修改为以下代码：

void MainWindow::moveAgvs_()
{
    timer = new QTimer(this);
    connect(timer, &QTimer::timeout, this, &MainWindow::moveAgvs);
    timer->start(1000);
}

这样，当 `moveAgvs_` 函数被调用时，会创建一个 `timer` 对象并启动它，同时将其 `timeout` 信号连接到 `moveAgvs` 槽函数。希望这能帮到您解决问题。

相关问题

void MainWindow::moveAgvs_(){ timer =new QTimer(this); timer->start(1000); connect(timer, &QTimer::timeout, this, &MainWindow::moveAgvs); }， QTimer::singleShot(time, this, &, i, next_node, cur_x, cur_y, power_consumption, j, steps { float ratio = static_cast<float>(j) / steps; double new_x = cur_x + ratio * (next_node->x - cur_x); double new_y = cur_y + ratio * (next_node->y - cur_y); agvs[i].setCurrentX(new_x); agvs[i].setCurrentY(new_y); std:: cout <<"AGV"<<"("<< new_x << "," << new_y << ")" << endl; // 更新电量 agvs[i].setpower(agvs[i].power_ - power_consumption / steps); this->update(); // 在窗口中重绘 });，修改代碼為：第二个 QTimer 结束后再去运行第一个 QTimer

您可以在第二个 QTimer 的 timeout 信号中添加一个回调函数，用于启动第一个 QTimer。然后在第一个 QTimer 的 timeout 信号中进行操作。例如：

void MainWindow::moveAgvs_() {
    timer1 = new QTimer(this);
    timer2 = new QTimer(this);
    timer2->start(5000); // 第二个 QTimer 每隔 5 秒触发一次
    connect(timer2, &QTimer::timeout, this, &MainWindow::startFirstTimer);
}

void MainWindow::startFirstTimer() {
    qDebug() << "Starting the first timer...";
    timer1->start(1000); // 第一个 QTimer 每隔 1 秒触发一次
    connect(timer1, &QTimer::timeout, this, &MainWindow::moveAgvs);
    timer2->stop(); // 停止第二个 QTimer
}

void MainWindow::moveAgvs() {
    // 在这里进行操作
}

在这个例子中，第二个 QTimer 每隔 5 秒触发一次，当它触发时调用 startFirstTimer 函数。startFirstTimer 函数会创建一个新的 QTimer（即第一个 QTimer），并在每隔 1 秒触发一次。同时，它会停止第二个 QTimer。当第一个 QTimer 触发时，会调用 moveAgvs 函数，执行您想要的操作。

#include "mainwindow.h"#include "ui_mainwindow.h"#include <QMessageBox>#include <QTextEdit>#include <QPushButton>TemperatureThread::TemperatureThread(QObject *parent) : QThread(parent){ m_temperature = 0.0;}void TemperatureThread::run(){ while (true){ m_temperature = qrand() % 100; emit temperatureChanged(m_temperature); msleep(1000); }}MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow){ ui->setupUi(this); m_temperatureThread = new TemperatureThread(this); m_timer = new QTimer(this); m_threshold = 0.0; connect(m_temperatureThread, &TemperatureThread::temperatureChanged, this, &MainWindow::updateTemperature);}MainWindow::~MainWindow(){ delete ui;}void MainWindow::on_startButton_clicked(){ if (m_temperatureThread->isRunning()) { QMessageBox::warning(this,tr("Warning"),tr("Alarm already started")); return; } bool ok; m_threshold = ui->thresholdEdit->text().toDouble(&ok); if (!ok) { QMessageBox::warning(this,tr("warning"),tr("Invalid")); return; } m_temperatureThread->start(); m_timer->start(1000);}void MainWindow::on_stopButton_clicked(){ if (!m_timer->isActive() || !m_temperatureThread->isRunning()) { QMessageBox::warning(this,tr("Warning"),tr("Alarm not started yet")); return; } m_temperatureThread->quit(); m_temperatureThread->wait(); m_timer->stop(); ui->temperatureLabel->setText(QString::number(0.0));}void MainWindow::updateTemperature(double temperature){ ui->temperatureLabel->setText(QString::number(temperature)); if (temperature > m_threshold){ QMessageBox::critical(this,tr("Warning"),tr("Temperature too high")); }}这段代码怎么改，可以使timer的数据逐渐增大，而不是随意乱弹出数据

您可以使用一个变量来保存当前的时间，每次更新温度时增加这个变量的值，然后用变量的值作为计时器的间隔。具体来说，您需要做以下更改：

1.在MainWindow类中添加一个私有变量m_time，用于保存当前时间。

2.在MainWindow类的构造函数中将m_time初始化为0。

3.在MainWindow类的updateTemperature函数中增加m_time的值。

4.在MainWindow类的on_startButton_clicked函数中，将计时器的间隔设置为m_time的值，并在开始计时器之前将m_time的值增加。

5.在MainWindow类的on_stopButton_clicked函数中，停止计时器时将m_time重置为0。

下面是修改后的代码：

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QMessageBox>
#include <QTextEdit>
#include <QPushButton>

TemperatureThread::TemperatureThread(QObject *parent)
    : QThread(parent){
    m_temperature = 0.0;
}

void TemperatureThread::run(){
    while (true){
        m_temperature = qrand() % 100;
        emit temperatureChanged(m_temperature);
        msleep(1000);
    }
}

MainWindow::MainWindow(QWidget *parent):
    QMainWindow(parent),
    ui(new Ui::MainWindow){
    ui->setupUi(this);
    m_temperatureThread = new TemperatureThread(this);
    m_timer = new QTimer(this);
    m_threshold = 0.0;
    m_time = 0;
    connect(m_temperatureThread, &TemperatureThread::temperatureChanged,
            this, &MainWindow::updateTemperature);
}

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

void MainWindow::on_startButton_clicked(){
    if (m_temperatureThread->isRunning()) {
        QMessageBox::warning(this,tr("Warning"),tr("Alarm already started"));
        return;
    }
    bool ok;
    m_threshold = ui->thresholdEdit->text().toDouble(&ok);
    if (!ok) {
        QMessageBox::warning(this,tr("warning"),tr("Invalid"));
        return;
    }
    m_time = 0;
    m_timer->start(m_time);
    m_temperatureThread->start();
}

void MainWindow::on_stopButton_clicked(){
    if (!m_timer->isActive() || !m_temperatureThread->isRunning()) {
        QMessageBox::warning(this,tr("Warning"),tr("Alarm not started yet"));
        return;
    }
    m_temperatureThread->quit();
    m_temperatureThread->wait();
    m_timer->stop();
    ui->temperatureLabel->setText(QString::number(0.0));
    m_time = 0;
}

void MainWindow::updateTemperature(double temperature){
    ui->temperatureLabel->setText(QString::number(temperature));
    m_time += 1000;
    if (temperature > m_threshold){
        QMessageBox::critical(this,tr("Warning"),tr("Temperature too high"));
    }
    m_timer->setInterval(m_time);
}