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。例如：

void MainWindow::moveAgvs_() {
    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 = new QTimer(this);
    timer1->start(1000);
    connect(timer1, &QTimer::timeout, this, &MainWindow::moveAgvs);
}

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。当第一个 QTimer 触发时，会调用 moveAgvs 函数，执行您想要的操作。

相关问题

#include "mainwindow.h" #include "ui_mainwindow.h" #include<QMessageBox> #include<QTextEdit> #include<QPushButton> TemperatureThread::TemperatureThread(QObject *parent) : QThread(parent) { m_temperature = 0.0; QPushButton * btn= new QPushButton(); //btn->show(); btn->setText("this"); btn->setParent(QObject); } 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_timer->isActive()) { 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()){ QMessageBox::warning(this,tr("Warning"),tr("Alarm not started yet")); return; } m_temperatureThread->quit(); m_temperatureThread->wait(); m_timer->stop(); ui->temperatureLabel->setText(tr("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")); } }错在哪

代码存在一些问题：

1. 在 TemperatureThread 的构造函数中创建了一个 QPushButton 实例，但并没有将其添加到界面中。

2. 在创建 QPushButton 实例时，使用了 QObject 作为其父对象，应该使用 MainWindow 或其子类作为父对象。

3. 在 on_startButton_clicked 函数中，应该先判断是否已经启动了温度线程，再进行阈值的设置和启动定时器。

4. 在 on_stopButton_clicked 函数中，应该先判断是否已经启动了定时器和温度线程，再停止定时器和温度线程，并将温度显示标签的文本清零。

5. 在 updateTemperature 函数中，应该将温度值转换为字符串后再设置到温度显示标签上。

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;

    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"));
    }
}

#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);
}