fix: 尝试修复 ISSUE #I68I8W 安装结束时随机崩溃问题

暂时未知，目前怀疑安装结束后，DownloadItem 触发 finished() 信号，在详情页槽函数中执行 disconnect 操作时导致崩溃

Log: 去除 disconnect 操作；修改可能造成问题的控件指针获取方式；修复多线程执行下载安装操作时跨线程相关警告

* 该提交可能存在严重问题，建议多进行测试；如果存在问题，及时 revert 该提交

src/backend/downloadworker.cpp

@@ -145,17 +145,19 @@ void DownloadController::startDownload(const QString &url)
             command.append(aria2NoSeeds.toUtf8());
         }
         qDebug() << command;
-        auto cmd = new QProcess(this);
-        cmd->setProcessChannelMode(QProcess::MergedChannels);
-        cmd->setProgram("aria2c");
-        cmd->setArguments(command);
-        cmd->start();
-        cmd->waitForStarted(); //等待启动完成
 
-        QObject::connect(cmd, &QProcess::readyReadStandardOutput, [&]()
+        bool downloadSuccess = true;
+        QProcess cmd;
+        cmd.setProcessChannelMode(QProcess::MergedChannels);
+        cmd.setProgram("aria2c");
+        cmd.setArguments(command);
+        cmd.start();
+        cmd.waitForStarted(-1); //等待启动完成
+
+        connect(&cmd, &QProcess::readyReadStandardOutput, [&]()
         {
             //通过读取输出计算下载速度
-            QString message = cmd->readAllStandardOutput().data();
+            QString message = cmd.readAllStandardOutput().data();
             // qDebug() << message;
             message = message.replace(" ", "");
             QStringList list;
@@ -195,17 +197,21 @@ void DownloadController::startDownload(const QString &url)
                 emit downloadProcess(speedInfo, downloadSizeRecord, fileSize);
             }
         });
-        QObject::connect(cmd, &QProcess::readyReadStandardError, [&]()
+        connect(&cmd, &QProcess::readyReadStandardError, [&]()
         {
-            emit errorOccur(cmd->readAllStandardError().data());
+            emit errorOccur(cmd.readAllStandardError().data());
-            return;
+            downloadSuccess = false;
+            cmd.close();
         });
 
-        auto pidNumber = cmd->processId();
+        pidNumber = cmd.processId();
-        this->pidNumber = pidNumber;
+
-        while (cmd->waitForFinished(-1))
+        cmd.waitForFinished(-1);
+        cmd.close();
+
+        if(!downloadSuccess)
         {
-            continue;
+            return;
         }
 
         // 统计下载量
@@ -218,7 +224,7 @@ void DownloadController::startDownload(const QString &url)
         mailProcess.start(SenderdPath.toUtf8(), QStringList() << metaUrl << "HD70642");
         mailProcess.waitForStarted();
         mailProcess.waitForFinished(3000);
-        mailProcess.deleteLater();
+        mailProcess.close();
 
         emit downloadFinished(); });
 }

src/backend/downloadworker.h

@@ -21,7 +21,7 @@ public:
 
 private:
     int threadNum;
-    int pidNumber = -1;
+    qint64 pidNumber = -1;
     QString filename;
     qint64 fileSize;
     QVector<QPair<qint64, qint64>> ranges;

src/pages/appintopage.cpp

@@ -291,34 +291,39 @@ void AppIntoPage::initConnections()
 
 void AppIntoPage::isDownloading(const QUrl &url)
 {
-    if (dw->getUrlList().lastIndexOf(url) == -1)
+    int index = dw->getUrlList().lastIndexOf(url);
+    if (index == -1)
     {
         ui->downloadButton->setEnabled(true);
         return;
     }
-    else
+
+    DownloadItem *item = dw->getDIList().at(index);
+    if (item == nullptr)
     {
-        ui->downloadButton->setEnabled(false);
+        ui->downloadButton->setEnabled(true);
+        return;
     }
 
+    ui->downloadButton->setEnabled(false);
     ui->pushButton_3->hide();
-    if (dw->getDIList()[dw->getUrlList().lastIndexOf(url)]->download == 2)
+    if (item->download == 2)
     {
         ui->downloadButton->setEnabled(true);
         ui->downloadButton->setText(tr("Download"));
     }
-    if (dw->getDIList()[dw->getUrlList().lastIndexOf(url)]->download == 1)
+    if (item->download == 1)
     {
         ui->downloadButton->setEnabled(true);
         ui->downloadButton->setText(tr("Install"));
     }
-    if (dw->getDIList()[dw->getUrlList().lastIndexOf(url)]->isInstall)
+    if (item->isInstall)
     {
         ui->downloadButton->setEnabled(false);
         ui->downloadButton->setText(tr("Installing"));
         return;
     }
-    if (dw->getDIList()[dw->getUrlList().lastIndexOf(url)]->download == 3)
+    if (item->download == 3)
     {
         ui->downloadButton->setEnabled(true);
         ui->downloadButton->setText(tr("Reinstall"));
@@ -368,32 +373,39 @@ void AppIntoPage::setAppinfoTags(const QStringList &tagList)
 
 void AppIntoPage::on_downloadButton_clicked()
 {
+    QString downloadUrl = SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString();
     if (ui->downloadButton->text() == tr("Install"))
     {
-        dw->getDIList()[dw->getUrlList().lastIndexOf(SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString())]->install(0);
+        DownloadItem *item = dw->getDIList()[dw->getUrlList().lastIndexOf(downloadUrl)];
-        isDownloading(SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString());
+        if (item == nullptr)
-        connect(dw->getDIList()[dw->getUrlList().lastIndexOf(SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString())], &DownloadItem::finished, [=]()
         {
-            isDownloading(SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString());
+            return;
-            disconnect(dw->getDIList()[dw->getUrlList().lastIndexOf(SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString())], &DownloadItem::finished, nullptr, nullptr); });
+        }
+
+        connect(item, &DownloadItem::finished, [=]() { isDownloading(downloadUrl); });
+
+        item->install(0);
+        isDownloading(downloadUrl);
 
         return;
     }
 
     emit clickedDownloadBtn();
 
-    dw->addItem(info["Name"].toString(), info["Filename"].toString(), info["Pkgname"].toString(), iconpixmap, SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString());
+    DownloadItem *item = dw->addItem(info["Name"].toString(), info["Filename"].toString(), info["Pkgname"].toString(), iconpixmap, downloadUrl);
+    if (item == nullptr)
+    {
+        return;
+    }
+
     if (ui->downloadButton->text() == tr("Reinstall"))
     {
-        dw->getDIList()[dw->allDownload - 1]->reinstall = true;
+        item->reinstall = true;
     }
     ui->downloadButton->setEnabled(false);
-    connect(dw->getDIList()[dw->getUrlList().lastIndexOf(SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString())], &DownloadItem::finished, [=]()
+    connect(item, &DownloadItem::finished, [=]() { isDownloading(downloadUrl); });
-            {
-        isDownloading(SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString());
-        disconnect(dw->getDIList()[dw->getUrlList().lastIndexOf(SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString())], &DownloadItem::finished, nullptr, nullptr); });
 
-    isDownloading(SparkAPI::getServerUrl() + "store" + spk.path() + "/" + info["Filename"].toString());
+    isDownloading(downloadUrl);
 }
 
 void AppIntoPage::on_pushButton_3_clicked()

src/widgets/common/downloaditem.cpp

@@ -105,6 +105,44 @@ void DownloadItem::install(int t)
         ui->label_2->setToolTip(tr("Installing"));
 
         QtConcurrent::run([=]()
+        {
+            slotAsyncInstall(t);
+        });
+
+        qDebug() << ui->label_filename->text().toUtf8();
+    }
+}
+
+void DownloadItem::on_pushButton_install_clicked()
+{
+    DownloadItem::install(0);
+}
+
+void DownloadItem::on_pushButton_2_clicked()
+{
+    ui->label_2->setText(tr("Download canceled"));
+    ui->label_2->setToolTip(tr("Download canceled"));
+    download = 2;
+    ui->pushButton_2->setEnabled(false);
+    ui->progressBar->hide();
+    close = true;
+}
+
+void DownloadItem::on_pushButton_3_clicked()
+{
+    textbrowser->setLineWidth(0);
+    textbrowser->setText(out);
+    textbrowser->setMinimumHeight(500);
+
+    output_w->setMinimumHeight(600);
+    output_w->setAttribute(Qt::WA_TranslucentBackground);
+    output_w->setTitle(ui->label->text());
+    output_w->layout()->setMargin(20);
+    output_w->layout()->addWidget(textbrowser);
+    output_w->show();
+}
+
+void DownloadItem::slotAsyncInstall(int t)
 {
     QProcess installer;
     switch(t)
@@ -173,37 +211,5 @@ void DownloadItem::install(int t)
 
     ui->widget_spinner->hide();
     DownloadItem::isInstall = false;
-            emit finished(); });
+    emit finished();
-        //        emit finished();
-        qDebug() << ui->label_filename->text().toUtf8();
-    }
-}
-
-void DownloadItem::on_pushButton_install_clicked()
-{
-    DownloadItem::install(0);
-}
-
-void DownloadItem::on_pushButton_2_clicked()
-{
-    ui->label_2->setText(tr("Download canceled"));
-    ui->label_2->setToolTip(tr("Download canceled"));
-    download = 2;
-    ui->pushButton_2->setEnabled(false);
-    ui->progressBar->hide();
-    close = true;
-}
-
-void DownloadItem::on_pushButton_3_clicked()
-{
-    textbrowser->setLineWidth(0);
-    textbrowser->setText(out);
-    textbrowser->setMinimumHeight(500);
-
-    output_w->setMinimumHeight(600);
-    output_w->setAttribute(Qt::WA_TranslucentBackground);
-    output_w->setTitle(ui->label->text());
-    output_w->layout()->setMargin(20);
-    output_w->layout()->addWidget(textbrowser);
-    output_w->show();
 }

src/widgets/common/downloaditem.h

@@ -59,6 +59,8 @@ private slots:
     void on_pushButton_2_clicked();
     void on_pushButton_3_clicked();
 
+    void slotAsyncInstall(int t);
+
 signals:
     void finished();
 };

src/widgets/downloadlistwidget.cpp

@@ -54,36 +54,42 @@ DownloadListWidget::~DownloadListWidget()
 {
     if (downloadController)
     {
+        downloadController->disconnect();
         downloadController->stopDownload();
+        downloadController->deleteLater();
     }
 
+    clearItem();
     delete ui;
 }
 
 void DownloadListWidget::clearItem()
 {
-    ui->listWidget->vScrollBar->scrollTop();
+    //    QListWidgetItem *item = nullptr;
-    int n = ui->listWidget->count();
+    //    while ((item = ui->listWidget->takeItem(0)) != nullptr)
-    for (int i = 0; i < n; i++)
+    //    {
-    {
+    //        QWidget *card = ui->listWidget->itemWidget(item);
-        QListWidgetItem *item = ui->listWidget->takeItem(0);
+    //        if (card)
-        QWidget *card = ui->listWidget->itemWidget(item);
+    //        {
-        delete card;
+    //            card->deleteLater();
-        card = NULL;
+    //            card = nullptr;
-        delete item;
+    //        }
-        item = NULL;
+    //        delete item;
-    }
+    //        item = nullptr;
+    //    }
+
+    //    ui->listWidget->vScrollBar->scrollTop();
     ui->listWidget->clear();
 }
-void DownloadListWidget::addItem(QString name, QString fileName, QString pkgName, const QPixmap icon, QString downloadurl)
+DownloadItem* DownloadListWidget::addItem(QString name, QString fileName, QString pkgName, const QPixmap icon, QString downloadurl)
 {
     if (fileName.isEmpty())
     {
-        return;
+        return nullptr;
     }
     urList.append(downloadurl);
     allDownload += 1;
-    DownloadItem *di = new DownloadItem(this);
+    DownloadItem *di = new DownloadItem;
     dlist << downloadurl;
     downloaditemlist << di;
     di->setName(name);
@@ -99,6 +105,8 @@ void DownloadListWidget::addItem(QString name, QString fileName, QString pkgName
         nowDownload += 1;
         startRequest(urList.at(nowDownload - 1), fileName); // 进行链接请求
     }
+
+    return di;
 }
 
 QList<DownloadItem *> DownloadListWidget::getDIList()
@@ -119,7 +127,13 @@ void DownloadListWidget::startRequest(QUrl url, QString fileName)
     isdownload = true;
     downloaditemlist[allDownload - 1]->free = false;
 
-    downloadController = new DownloadController(this); // 并发下载，在点击下载按钮的时候才会初始化
+    if (downloadController)
+    {
+        downloadController->disconnect();
+        downloadController->stopDownload();
+        downloadController->deleteLater();
+    }
+    downloadController = new DownloadController; // 并发下载，在点击下载按钮的时候才会初始化
     connect(downloadController, &DownloadController::downloadProcess, this, &DownloadListWidget::updateDataReadProgress);
     connect(downloadController, &DownloadController::downloadFinished, this, &DownloadListWidget::httpFinished);
     // connect(downloadController, &DownloadController::errorOccur, this, [=](QString msg){this->sendNotification(msg);});

src/widgets/downloadlistwidget.h

@@ -20,7 +20,7 @@ class DownloadListWidget : public DBlurEffectWidget
     Q_OBJECT
 
 public:
-    void addItem(QString name, QString fileName, QString pkgName, const QPixmap icon, QString downloadurl);
+    DownloadItem *addItem(QString name, QString fileName, QString pkgName, const QPixmap icon, QString downloadurl);
     int nowDownload = 0;
     int allDownload = 0;
     QList<DownloadItem *> getDIList();
@@ -35,7 +35,7 @@ private:
     QStringList dlist;
     QList<QUrl> urList;
     QList<DownloadItem *> downloaditemlist;
-    DownloadController *downloadController;
+    DownloadController *downloadController = nullptr;
     int nowdownload = 0;
     QString theSpeed;
     QTimer download_speed;