Qt - 从文本文件中读取

Question

我有一个三列表格视图;我刚刚通过使用此代码

QFile file("/home/hamad/lesson11.txt"); 
if(!file.open(QIODevice::WriteOnly)) { 
    QMessageBox::information(0,"error",file.errorString()); 
} 
QString dd; 

for(int row=0; row < model->rowCount(); row++) { 
    dd = model->item(row,0)->text() + "," 
       + model->item(row,1)->text() + "," 
       + model->item(row,2)->text(); 

    QTextStream out(&file); 
    out << dd << endl; 
} 

写入到文本文件，但我没有成功再次读取相同的文件，我想这个代码，但我不知道哪里是它的问题

QFile file("/home/hamad/lesson11.txt"); 
QTextStream in(&file); 
QString line = in.readLine(); 
while(!in.atEnd()) { 

    QStringList fields = line.split(","); 

    model->appendRow(fields); 

} 

请帮忙吗？

Answer 1

必须更换串线

QString line = in.readLine(); 

到而：

QFile file("/home/hamad/lesson11.txt"); 
if(!file.open(QIODevice::ReadOnly)) { 
    QMessageBox::information(0, "error", file.errorString()); 
} 

QTextStream in(&file); 

while(!in.atEnd()) { 
    QString line = in.readLine();  
    QStringList fields = line.split(",");  
    model->appendRow(fields);  
} 

file.close();