QT显示url图片

2022-10-27 13:47:42

QT 显示网络图片我目前的办法就是先下载下来然后显示如果有好的办法请相互交流一下

需要调用的头文件

#include <QNetworkAccessManager>

#include <QNetworkReply>

需要在工程中添加

QT += network

主要的代码:

#include "dialog.h"

#include "ui_dialog.h"

Dialog::Dialog(QWidget *parent) :

    QDialog(parent),

    ui(new Ui::Dialog)

{

    ui->setupUi(this);

    connect(&netManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinished(QNetworkReply*)));

    QUrl url;

    url = QUrl("http://kexirobot.oss-cn-shanghai.aliyuncs.com/upload/robot0/pic1/1.png");

    QNetworkRequest request;

    request.setUrl(url);

    netManager.get(request);

}

void Dialog::replyFinished(QNetworkReply *reply)

{

    qDebug() << "reply :" << reply<< endl;

    if(reply->error() == QNetworkReply::NoError)

    {

        QByteArray data_bytes = reply->readAll();

        QPixmap* cur_pictrue =new QPixmap();

        cur_pictrue->loadFromData(data_bytes);

        cur_pictrue->save("./cur_night_picture.png");

//        delete cur_pictrue;

//        picture[1].load("cur_night_picture.png");

    }

    reply->deleteLater();

}

Dialog::~Dialog()

{

    delete ui;

}

工程代码

https://pan.baidu.com/s/1JgEbJH-QNW_T3ECmmI5EkQ

码农公寓

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