known incorrect sRGB profile 问题解决方案

由于Qt新版本对png文件的检测比较严格，所以有了  libpng warning: iCCP: known incorrect sRGB profile 的提醒，我的解决办法是写一个程序直接转换掉，就可以去掉对应的提醒。

源码如下：

ChangePNG.cpp

#include "ChangePNG.h"
#include "ui_ChangePNG.h"
 
#include <QFile>
#include <QFileDialog>
#include <QDebug>
 
ChangePNG::ChangePNG(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::ChangePNG)
{
    ui->setupUi(this);
 
    creatAction();
    menuAddAction();
    toolBarAddAction();
}
 
void ChangePNG::creatAction()
{
    //打开文件的Action
    m_openFileAction = new QAction(this);
    m_openFileAction->setText("打开");
    m_openFileAction->setStatusTip("打开文件");
    m_openFileAction->setIcon(QIcon(":/picture/images/document-open.png"));
    connect(m_openFileAction, SIGNAL(triggered(bool)), this, SLOT(openFile()));
 
    //保存文件的Action
    m_saveFileAction = new QAction(this);
    m_saveFileAction->setText("保存");
    m_saveFileAction->setStatusTip("保存文件");
    m_saveFileAction->setIcon(QIcon(":/picture/images/document-save.png"));
    //另外一种连接信号和槽的方法
    connect(m_saveFileAction, &QAction::triggered, this, &ChangePNG::saveFile);
}
 
void ChangePNG::menuAddAction()
{
    menu = new QMenu("文件");
    menu->addAction(m_openFileAction);
    menu->addAction(m_saveFileAction);
    ui->menuBar->addMenu(menu);
}
 
void ChangePNG::toolBarAddAction()
{
    ui->mainToolBar->addAction(m_openFileAction);
    ui->mainToolBar->addAction(m_saveFileAction);
}
 
 
void ChangePNG::openFile()
{
    QStringList fileList = QFileDialog::getOpenFileNames(this,
                                                         tr("选择要转换的PNG格式的图片"),
                                                         tr(""),
                                                         "image(*.png)");
 
    QStringList::iterator it = fileList.begin();
 
    QPixmap pixmap;
    QFile file;
 
    QString oldFileString = NULL;
    QString newFileString = NULL;
 
    while(it != fileList.end())  //把所有的文件遍历一遍
    {
        file.setFileName(*it);
        QFileInfo fileinfo(file.fileName());
        QString filename(fileinfo.fileName());  //获取文件名称
        QString fileAbsoluteDir(fileinfo.absolutePath());  //绝对路径
        QString newName = filename;
 
        oldFileString.append(newName+tr("\n"));
 
        newName.replace(newName.length()-4, 4, tr("old.png"));  //重新设定文件要修改文件的名字
 
        newFileString.append(newName+tr("\n"));
 
        newName = fileAbsoluteDir+tr("/")+newName;  //计算新文件的绝对路径
 
        if(file.rename(*it, newName))  //修改文件的名字防止冲突
        {
            pixmap.load(newName);  //设定要加载图片的绝对路径
            file.setFileName(*it);    //以旧的文件名字来命名新生成的
 
            file.open(QIODevice::WriteOnly);   //以写的方式打开该文件
            pixmap.save(&file, "PNG");   //以png格式保存文件
            file.close();   //关闭文件
        }
        else
        {
            qDebug()<<"修改文件名失败！";
        }
 
        ui->oldFile_textEdit->setText(oldFileString);
        ui->newFile_textEdit->setText(newFileString);
 
        it++;
    }
}
 
void ChangePNG::saveFile()
{
}
 
ChangePNG::~ChangePNG()
{
    delete ui;
}
 

 ChangePNG.h

#ifndef CHANGEPNG_H
#define CHANGEPNG_H
 
#include <QMainWindow>
 
namespace Ui {
class ChangePNG;
}
 
class ChangePNG : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit ChangePNG(QWidget *parent = 0);
    ~ChangePNG();
 
private:
    void creatAction();
    void menuAddAction();
    void toolBarAddAction();
 
private:
    QMenu* menu;
    QAction* m_openFileAction;
    QAction* m_saveFileAction;
 
private slots:
    void openFile();
    void saveFile();
 
private:
    Ui::ChangePNG *ui;
};
 
#endif // CHANGEPNG_H

源码：https://download.csdn.net/download/duxingheiying1041/10421180