Qt進度條百分比問題

Question

我想在下載文件時顯示進度條百分比。當文件下載時，我得到64％，而不是100％。如何解決這個問題？提前致謝。

void Updates::UpdateProgress(qint64 bytesRead, qint64 totalBytes) 
{ 
    int totalSize = totalBytes/1024/1024; 
    int totalMBReceived = bytesRead/1024/1024; 

    ui->progressBar->setMaximum(totalSize); 
    ui->progressBar->setValue(totalMBReceived); 

    int progressPercentage = (totalSize * totalMBReceived)/100; 
    qDebug() << progressPercentage; 

    ui->label->setText(QString::number(progressPercentage).append("%")); 
    ui->label_4->setText(QString::number(totalSize).append(" MB") + "/" + QString::number(totalMBReceived).append(" MB")); 
} 

Answer 1

你progressPercentage計算是錯誤的。在100％，你做了80 * 80/100 = 64

將其更改爲

int progressPercentage = (totalMBReceived * 100)/totalSize;