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QTextStream codec

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  • Christian EhrlicherC Offline
    Christian EhrlicherC Offline
    Christian Ehrlicher
    Lifetime Qt Champion
    wrote on last edited by
    #6

    @naax said in QTextStream codec:

    or I just don't know where I can change this that

    Since you don't show us the code where you create your text file we can't be sure that it's encoding is really utf-8...

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    naaxN 1 Reply Last reply
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    • Christian EhrlicherC Christian Ehrlicher

      @naax said in QTextStream codec:

      or I just don't know where I can change this that

      Since you don't show us the code where you create your text file we can't be sure that it's encoding is really utf-8...

      naaxN Offline
      naaxN Offline
      naax
      wrote on last edited by
      #7

      @Christian-Ehrlicher

      Also, I have this .txt file created myself in Windows. I'm adding here items manually for first, and I'm working in my program to add/load/save function for the future.
      imgw.png

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      • Christian EhrlicherC Offline
        Christian EhrlicherC Offline
        Christian Ehrlicher
        Lifetime Qt Champion
        wrote on last edited by
        #8

        QString::toDouble() takes a bool which shows you if it could be correctly converted. Also you should print out the strings before trying to convert them to numbers.

        Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
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        naaxN 1 Reply Last reply
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        • Christian EhrlicherC Christian Ehrlicher

          QString::toDouble() takes a bool which shows you if it could be correctly converted. Also you should print out the strings before trying to convert them to numbers.

          naaxN Offline
          naaxN Offline
          naax
          wrote on last edited by
          #9

          @Christian-Ehrlicher

          So? I think no, because of still the same problem. Not working

          QFile file(":/save/MealOne.txt");
               if (file.open(QIODevice::ReadOnly | QIODevice::Text))
               {
                   QTextStream in(&file);
                   in.setCodec("UTF-8");
          
                   while(!in.atEnd())
                   {
                       QString line = in.readLine();
                       QString line2 = in.readLine();
                       QString line3 = in.readLine();
                       QString line4 = in.readLine();
                       QString line5 = in.readLine();
          
                       ui->mealOneLeft->addItem(line);
          
                       ItemKcals.push_back(line2.toDouble());
                       ItemProteins.push_back(line3.toDouble());
                       ItemFats.push_back(line4.toDouble());
                       ItemCarbons.push_back(line5.toDouble());
          
                       ItemMap.insert(line, ItemMap.size());
                   }
          
                   file.close();
               }
          
          
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          • Christian EhrlicherC Offline
            Christian EhrlicherC Offline
            Christian Ehrlicher
            Lifetime Qt Champion
            wrote on last edited by
            #10

            @naax said in QTextStream codec:

            So?

            You should check the conversion to your number! And you should print out the values with e.g. qDebug() or to a custom debug label or something else

            Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
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            naaxN 1 Reply Last reply
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            • Christian EhrlicherC Christian Ehrlicher

              @naax said in QTextStream codec:

              So?

              You should check the conversion to your number! And you should print out the values with e.g. qDebug() or to a custom debug label or something else

              naaxN Offline
              naaxN Offline
              naax
              wrote on last edited by
              #11

              @Christian-Ehrlicher

              Same. Hmm, so I think the problem is with Item Map... Something broken, need to repair this.

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              • Christian EhrlicherC Offline
                Christian EhrlicherC Offline
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #12

                @naax said in QTextStream codec:

                so I think the problem is with Item Map

                Did you actually implement what I suggested?

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                Visit the Qt Academy at https://academy.qt.io/catalog

                naaxN 1 Reply Last reply
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                • Christian EhrlicherC Christian Ehrlicher

                  @naax said in QTextStream codec:

                  so I think the problem is with Item Map

                  Did you actually implement what I suggested?

                  naaxN Offline
                  naaxN Offline
                  naax
                  wrote on last edited by
                  #13

                  @Christian-Ehrlicher

                  Yes, all is correct here.

                  ee.png

                  So the problem is when I'm "Adding" items to other QListWidget. These same variables are not correct reading from ItemMap

                  //Add
                      Kcals[1]+=ItemKcals.at(ItemMap[ui->mealTwoLeft->currentItem()->text()]);
                      Proteins[1]+=ItemProteins.at(ItemMap[ui->mealTwoLeft->currentItem()->text()]);
                      Fats[1]+=ItemFats.at(ItemMap[ui->mealTwoLeft->currentItem()->text()]);
                      Carbons[1]+=ItemCarbons.at(ItemMap[ui->mealTwoLeft->currentItem()->text()]);
                  
                  
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                  • Christian EhrlicherC Offline
                    Christian EhrlicherC Offline
                    Christian Ehrlicher
                    Lifetime Qt Champion
                    wrote on last edited by
                    #14

                    Are you sure currentItem() is correct? Print it out (and use a temp variable for readability)

                    Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                    Visit the Qt Academy at https://academy.qt.io/catalog

                    naaxN 1 Reply Last reply
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                    • Christian EhrlicherC Christian Ehrlicher

                      Are you sure currentItem() is correct? Print it out (and use a temp variable for readability)

                      naaxN Offline
                      naaxN Offline
                      naax
                      wrote on last edited by
                      #15

                      @Christian-Ehrlicher

                      Yes, he is. Current Item Name is correct, but other variables no. Should be 79, not 97 like by first item

                      eeq.png

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                      • naaxN Offline
                        naaxN Offline
                        naax
                        wrote on last edited by
                        #16

                        I resolved it.
                        The problem was with QMap. I used the same keys in two QListWidget. That's why my variables were not correct. Thx anyway for the help, I was sure that is a problem with the codec.

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