QFile -- not reopening in text editor - c++

Question

There are two slots for open & close in my gui.
When i open a file its content are shown in text editor, then i press close button changes are save to file.
But Now when i again press, open & reload the same file. Nothing is shown in text editor, blank editor.
Why file is not reloading ?
private:
Ui::MainWindow *ui;
QFile file;
QTextStream out;
QString url; // the url of the file
void MainWindow::on_actionOpen_triggered()
{
QString openfileurl = QFileDialog::getOpenFileName();
if(openfileurl.isEmpty() || openfileurl == url) return;
file.setFileName(openfileurl);
//if(file.open(QIODevice::ReadOnly|QIODevice::Text))
if(file.open(QIODevice::ReadWrite|QIODevice::Text))
{
url = openfileurl;
ui->textEdit->setPlainText(QString::fromUtf8(file.readAll()));
}
//Set file to -- Qtextstream
out.setDevice(&file);
}
void MainWindow::on_actionClose_triggered()
{
//Set file to -- Qtextstream
out << ui->textEdit->toPlainText();
file.close();
ui->textEdit->clear();
}

Answer 1

Try this way
void MainWindow::on_actionClose_triggered()
{
//Set file to -- Qtextstream
out << ui->textEdit->toPlainText();
file.close();
ui->textEdit->clear();
uri.clear();
}
I think you should clear uri before make this check:
if(openfileurl.isEmpty() || openfileurl == url) return;
It will blowup when openfileurl == url. And it will do it definitely sure if you didn't cleared the uri. And here you are:
reload the same file
...with the same content... so, the if statement goes true and returns that's why the code below is not executing the second time.