Incorrect Listview data list JSON

Similar Questions

• [Explanation necessary] Clears the listview data and fill it again with new data

  Hello

  I correctly filled a listview in c ++, data analysed and does interesting things with it. However, I am drunk stumbling, unable to find a way delete and repopulate my display of the list...

  Question 1:

   

  1. How can after I insert data in the list view, I clear the list data and run again the same method (init) who populated the list view with the data in the first place?

  Here are the docs that I referenced and I don't understand how to implement the methods in my code.

  QList - clear() method

  https://developer.BlackBerry.com/Cascades/reference/QList.html#clear

  Using the data access Code, example
                            data_access/using_data_source

  GroupDataModel - Clear()

  https://developer.BlackBerry.com/Cascades/reference/bb__cascades__groupdatamodel.html#clear

  CODE
  
  Here is my code - filling of the display of the list of C++ and display of data in a ListView.

  MyApp.cpp

  MyApp::MyApp(bb::cascades::Application *app)
  : QObject(app){
      // create scene document from main.qml asset
          // set parent to created document to ensure it exists for the whole application lifetime
          QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);
  
              AbstractPane *root = qml->createRootObject();
              qml->setContextProperty("yoyo",this);
              //grab references
              list_view = root->findChild("listView");
  
              // set created root object as a scene
              app->setScene(root);
  
              mNetworkAccessManager = new QNetworkAccessManager(this);
              bool result = connect(mNetworkAccessManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(requestFinished(QNetworkReply*)));
  
               Q_ASSERT(result);
               Q_UNUSED(result);                 json = new QFile("data/file.json");
  }
  
  void MyApp::init(){
      QNetworkRequest request = QNetworkRequest();
       // i call some service here
       mNetworkAccessManager->get(request);
  }
  
  void MyApp::requestFinished(QNetworkReply *reply){
      qDebug() << reply->error();
      qDebug() << reply->errorString();
      if (reply->error() == QNetworkReply::NoError) {
          qDebug() << "No error";
  
                  QByteArray data = reply->readAll();
  
                  if (!json->open(QIODevice::ReadWrite)) {
                      qDebug() << "Failed to open file";
                      return;
                  }
                  json->write(data);
  
          bb::data::JsonDataAccess jda;
          QVariantMap results = jda.loadFromBuffer(data).toMap();
                  QVariantList lst = jda.loadFromBuffer(data).toList();
              GroupDataModel *m = new GroupDataModel();
                     m->insertList(lst);
                     m->setGrouping(ItemGrouping::None);
                     if(list_view) list_view->setDataModel(m);
  
      }else{
          showDialog("Boo",reply->errorString());
      }
  }
  

  MyApp.hpp

  // Tabbed pane project template
  #ifndef MyApp_HPP_
  #define MyApp_HPP_
  
  #include 
  #include 
  #include 
  #include 
  #include 
  #include 
  
  namespace bb {
  namespace cascades {
  class Application;
  }
  }
  namespace bb {
  namespace data {
  class Application;
  }
  }
  
  /*!
   * @brief Application pane object
   *
   *Use this object to create and init app UI, to create context objects, to register the new meta types etc.
   */
  class MyApp: public QObject {
  Q_OBJECT
  public:
      MyApp(bb::cascades::Application *app);
      virtual ~MyApp() {
      }
      Q_INVOKABLE
      void init();
  private slots:
      void requestFinished(QNetworkReply *reply);
  private:
      QNetworkAccessManager *mNetworkAccessManager;
      QNetworkRequest *request;
      QFile *json;
      bb::cascades::ListView *list_view;
  };
  
  #endif /* MyApp_HPP_ */
  

  hand. QML

  import bb.cascades 1.0
  
  Page{
  Container {
                          background: Color.White
                          ListView {
                              id: listView
                              preferredHeight: maxHeight
                              objectName: "listView"
                              listItemComponents: [
                                  ListItemComponent {
                                      type: "item"
                                      Container {
                                          Container {
                                              Label {
                                                  text: ListItemData.id
                                              }
                                          }
  
                                      }
                                  }
                              ]
                              onTriggered: {
                                  console.log("selected_index: " + indexPath)
                              }
                              horizontalAlignment: HorizontalAlignment.Center
                              verticalAlignment: VerticalAlignment.Center
                          }
  
  }
  }
  

  Question 2:

  How reference to the ListView object with the name "listView" in different parts of the MyApp.cpp file? Is there anything else I should add to the header file to make the accessible listView?

  Question 3:

  What happens when you call the clear() method? How the data model is affected? How the user interface is affected? What happens in memory?

  Question 4:

  How do you verify that the data in the list has been deleted so that you can go ahead and fills again with new data? What is the cheque that I perform?

  I would also like to know how you manage multiple views of lists and data sources in your applications. Best practices or ideas?

  Thank you
  

  I was able to clear the listview with the following code, if anyone is interested.

  listView.dataModel = null
  

  The dataModel must be set to "null".

• How to define data lists to scroll automatically in a jsf page?

  There is a requirement that data lists (extracts from the database) scrolls automatically in the region within a jsf page as a list of names of actors/actress will be shown and scroll at the end of a movie.

  Is there an easy way to implement it in jdev 12.1.2?

  Thank you.

  This is a great feature of continuous scrolling in tables in the ADF. (However, it is a characteristic of af: listView instead of af: jdev12.1.2 table?)

  Blog I've posted in previous answer was talking af:table and not af:listView.

  My first use case is different:

  This is data auto scrolling on the screen without user interaction.

  I got the impression that you're talking about that.

  Maybe you can use af:poll and call next() operation.

  Or you can try with AdfRichTable javascript api: http://jdevadf.oracle.com/adf-richclient-demo/docs/js_docs_out/index.html (I see methods like scrollToRowIndex(), but I don't know exactly how you can use it)

  A related use case is image slideshow:

  There are several images to shown but one for once, and the images can be shifted to show in turn automatically.

  Is the carousel component more af:poll be a good solution for this requirement?

  Yes, carousel will be the appropriate component.

  You can use af:poll (ADF 11 g: carousel goes round and round (... and round and..)-AMIS Technology Blog), or javascript to do the rotation (componentCarousel with autospin |) ADF recipes)

  Dario

• Dynamic loading videos - how to integrate data from json files in video placeholder at the stage

  Hello!

  
  Working on a site where I want to display a variety of videos. Found a tutorial with a good script for loading dynamically the contents of a json file.

  $.getJSON ("data / press.json", function (data))

  {

  for (var i = 0; i < data.length; i ++)

  {

  var s = sym.createChildSymbol ("slide", "Stage");

  s.$("photo"). CSS({"background-image":"URL('"+Data[i].image+"')"});)

  s.$("title").html (Data [i] .title);

  s.$("headtext").html (Data [i] .headtext);

  s.getSymbolElement () .css ({"location": "absolute",})

  "the left": "50px",

  ({'top': I * 200 + 50 + 'px'});

  }

  
  The json file content looks like this,

  
  [

  {

  'image': "images/poster_.jpg,"

  "title": "my test."

  "date': 'my date."

  "headtext": "my text",

  'video': "http://www...".

  },

  ]

  
  Unfortunately, there is nothing of video in the above script.

  Anyone know how I can,

  
  1 / choose my "video" variable data in my json file (guess the script needs a line like: s.$("video").html (data [i] .video);)     or something)

  2 / dynamically put in my video placeholder where my video script of the show is.

  -----

  YouTube var = $("< iFrame/>");

  var url = " " https://www.YouTube.com...; "

  
  SYM.$("video"). Append (YouTube);

  YouTube.attr ('type', ' text/html');

  YouTube.attr('width','640');

  YouTube.attr('height','360');

  YouTube.attr ('src', URL);

  -------

  Most grateful for any advice

  Best regards

  Bengt, informel.se

  Looking at the code of the success of your JSON Manager, it seems that you want to create a list of these items on stage with several video clips too. You can create the iframes required in success of the JSON Manager and set the src attribute according to the video attribute of the incoming JSON data. An approach could be as follows:

  $.getJSON ("data / press.json", function (data))

  {

  for (var i = 0; i)

  {

  var s = sym.createChildSymbol ("slide", "Stage");

  s.$("photo"). CSS({"background-image":"URL('"+Data[i].image+"')"});)

  s.$("title").html (Data [i] .title);

  s.$("headtext").html (Data [i] .headtext);

  s.getSymbolElement () .css ({"location": "absolute",})

  "the left": "50px",

  ({'top': I * 200 + 50 + 'px'});

  Assuming that you have a video called placeholder in the slide of symbol

  var YouTube is $("").attr('width','640').attr('height','360');.

  YouTube.attr ('src', Data [i]. Video);

  s.$("video").html (YouTube);

  }

  }

• Does not start, need more and more memory, then crashes. It is SOLVED by deleting DB, panacea.dat, foldertree.json CAUSE global messages: uknown

  As a user of Thunderbird long term (currently version 38.2.0 on Win7 x 86 US) today, I caught myself (negatively) by the following problem: at the launch at the start of Thunderbird, the window will appear last closed (and for a short while, I see my files, etc., as left behind, during the last closure of Thunderbird), but then it turns into State "Not responding" (nothing works). When we look in the Task Manager, I see that Thunderbird seizes more and more memory, before this date - after a few seconds - crashing. I really hope that for some help fast, if possible (I desperately need a solution for e-mail job well - ideally the one I had, i.e. Thunderbird with my settings).

  What I tried:
  -Uninstall Thunderbird and install it again (did not help)
  -Uninstall Thunderbird and install an older version (I tried 38.1.0, 38.0.2, and 31.8.0 - nothing has worked)
  -from Thunderbird in SafeMode (same problem)
  -from Thunderbird in safe mode of Windows (same problem)
  -from Thunderbird in offline mode (did not help)

  My main question to know how to solve this problem, includes questions such as
  ? Should I try to delete some files of Thunderbird and try again (which ones?)?
  ? Can I use a command line "tricks" to get Thunderbird started?
  Etc.

  Thanks for your help!

  I think I solved my problem: delete messages from global reach DB and panacea.dat foldertree.json helped - once Thunderbird started again interactively and now I can restore my data files/messages.

• Incorrect activity data

  Was wondering if anyone had any suggestions on how to correct the incorrect activity data? My wife has reduced its objectives to about 200 calories per day just to experiment with the application activity and she is still unable to achieve this goal, unless it's one day, she does a workout. She's up and down of the markets all day at work (which certainly would increase the heart rate to be considered exercise.)

  Just curious to know if there is something you miss. You need to be a vegetable not to burn 200 calories per day. Objectives of settlement also work when they feel like it.

  There are also times when she goes for a mile 3 fast walking up and down the hills and he gave her 10 minutes of exercise.

  Hello

  Every minute movement equaling or exceeding the intensity of a brisk walk took into account in the daily exercise goals and moving of your wife.

  If she supports outdoor records his iPhone with him and walks or runs as training via the application of the session training, data GPS can estimate its distance and pace. Otherwise, it is important for his arms swinging naturally as she walks or races, because the watch relies on the movement of arms (identified through the built-in accelerometer) to follow the movement. Unless the application of the training session is used, heart rate data are not required account in the estimate of exercise or calories. The daily focus of travel is also active energy / calories (rest energy / calories are not taken into account).

  Calibration of watch your wife will allow him to estimate more precisely various fitness and results related to the activity (by teaching how his arm movements relate to "Stride" lengths at different speeds).

  Calories and other calculations also depend on his personal information. To verify that it was entered correctly and update over time:

  -On his iPhone, in the application of Eve, go to: My Watch (tab) > health > edit (top-right).

  More information:

  Use the activity on your Apple Watch - Apple Support

  Use of the workout on your Apple Watch - Apple Support

  Calibrate your Apple Watch for better accuracy of training and activity - Apple Support

• Resizing of custom data list

  Hello! I created a list of custom data in Catalyst beta 2, defined his repeated point and put a scroll bar inside. I would use this list of data in several places, in various sizes, of course, but I can't change the size only when you change parts list and resizing of the area of the repeated element (but it affects all instances, of course). When I place an instance of the list on the Web, it is not resizable, it has no adjustable squares in the corners and also the width and height properties are disabled in the properties panel. How can I create a resizable data list?

  Thanks in advance,

  Attila

  Hi Attila,

  Unfortunately, the first version of Catalyst does not support creating resizable components. It is a high priority for future versions.

  Here's what you can do in the meantime:

  (1) create the resizability in Flash Builder - you will need to write the code of simple constraints. Let me know if you need some learning resources.

  (2) duplicate the component in two different sizes. There are two ways to duplicate an item:

  • Right-click in the library panel, choose "Export a library package", right click again and choose "import a library package". This will duplicate ALL of your components, so you'll need to delete others.

  • Select one instance of the list in question, right-click, and choose "Component of Revert to work". Then right-click again and choose "Create component of work > list. You are now recreating another copy of your list.

  I know that these are solutions to the cheese, but that's what we have in the current version.

  Good luck

  Adam

• A simple example of filling the data from Json to a ListView.

  I want a simple example to inflate a listview with Json data.

  Examples of the sample do not work

  as we have a code example

  App.cpp

  App::App()
  {
      Page *root = new Page;
      ListView *listView = new ListView;
  
      // Create the data model, specifying sorting keys of "firstName" and "lastName"
      GroupDataModel *model = new GroupDataModel(QStringList() << "firstName"
                                                 << "lastName");
  
      // Create a JsonDataAccess object and load the .json file. The QDir::currentPath()
      // function returns the current working directory for the app.
      JsonDataAccess jda;
      QVariant list = jda.load(QDir::currentPath() +
                               "/app/native/assets/employees.json");
  
      // Insert the data into the data model. Because the root of the .json file is an
      // array, a QVariant(QVariantList) is returned from load(). You can provide a
      // QVariantList to a data model directly by using insertList().
      model->insertList(list.value());
  
      qDebug()<<"the size of model is "<size()<<"\n";
  
      // Set the data model for the list view
      listView->setDataModel(model);
  
      // Set the content of the page and display it
      root->setContent(listView);    Application::setScene(root);
  }
  

  with the file employees.json of assets

  [
      {
          "firstName" : "Mike",
          "lastName" : "Chepesky"
          "employeeNumber" : 01840192
      },
      {
          "firstName" : "Westlee",
          "lastName" : "Barichak"
          "employeeNumber" : 47901927
      },
      {
          "firstName" : "Jamie",
          "lastName" : "Lambier"
          "employeeNumber" : 51239657
      },
      {
          "firstName" : "Denise",
          "lastName" : "Marshall"
          "employeeNumber" : 41239520
      },
      {
          "firstName" : "Matthew",
          "lastName" : "Taylor"
          "employeeNumber" : 01963597
      },
      {
          "firstName" : "Mark",
          "lastName" : "Tiegs"
          "employeeNumber" : 65321951
      },
      {
          "firstName" : "Karla",
          "lastName" : "Tetzel"
          "employeeNumber" : 03266987
      },
      {
          "firstName" : "Ian",
          "lastName" : "Dundas"
          "employeeNumber" : 29472012
      },
      {
          "firstName" : "Marco",
          "lastName" : "Cacciacarro"
          "employeeNumber" : 56446691
      }
  ]
  

  On the run, it shows a white screen with no list control.

  Thank you all for your answers, actually problem was not in the code. The problem is in the employees.json file I downloaded from developer site.

   

  [
      {
          "firstName" : "Mike",
          "lastName" : "Chepesky"      // after this ',' is missing
          "employeeNumber" : 01840192
      },
      {
          "firstName" : "Westlee",
          "lastName" : "Barichak"      // after this ',' is missing
          "employeeNumber" : 47901927
      },
      {
          "firstName" : "Jamie",
          "lastName" : "Lambier"    // after this ',' is missing
          "employeeNumber" : 51239657
      },
  
  ....................so on]
  

  means the error occurred when parsing json. Error very stupid . I have checked it sooner.

  So who uses this example json file in their applications. Please correct first, and then use.

   

• Display the ListView data not grouped data

  How to read data from an SQLite table and display it on a ListView without the GroupDataModel. I don't want my list to be grouped.

  Have you looked at these articles in the knowledge base?

  http://supportforums.BlackBerry.com/T5/Cascades-development-knowledge/ListItemComponent-types-when-U...

  http://supportforums.BlackBerry.com/T5/Cascades-development-knowledge/using-your-own-DataModel/Ta-p/...

  Martin

• How to record a little complex data in json?

  Hi all

  I want to use json to store complex data a bit. I checked the sample application code. It's too simple.

  The data are as follows:

  {

  'day': 'ddd ',.

  'type': 'xxx ',.

  'name': "qqq"

  "amandine":]

  {'name': 'sss', 'set': 'ddd', 'time': 'ddd'},

  {'name': 'eee', 'set': 'fff', 'time': 'fff'},

  {'name': 'qqq', 'set': 'ggg', 'time': 'ggg'},

  {'name': 'aaa', 'set': 'vvv', 'time': 'vvv'},

  {'name': 'zzz', 'set': 'ccc', 'time': "ccc"}

  ]

  }

  I am confused with QVaraintMap, QVariantList and QVariant and don't know how to use them properly.

  PS: I'm new to json. I used to use MySQL in my work.

  Thank you.

  brad_qqq

  The simplest approach is the following:

  JSON object (something wrapped in {}) will be a QVariantMap

  List of JSON (something wrapped in []) will be a QVariantList

  Everything else (numbers, strings, boolean, etc.) will be a QVariant

  Everything will be a QVariant when initially mapped out, and you must check the types with canConvert (Type) and use the methods toXXXX, that all return values (http://qt-project.org/doc/qt-4.8/qvariant.html) to get the respective types and use the data.

• Data using JSON Javascript within edge animate

  I have a javascript file that displays data in an html page, there is INFORMATION from a JSON file

  I would use the output to the breast to animate dash instead (essentially re - build the HTML page using edge animate).

  I understand that I should include my script & scripts jquery in my composition, here's my script code. How can I use the output of this on the edge of adobe.

  function playlistupdate (list)

  {

  for (var i = 0; i! = list.dbdata.length; i ++)

  {

  song var = list.dbdata [i];

  }

  {

  $("#list0artist").html(list.dbdata[0].artist);

  $("#list0title").html(list.dbdata[0].title);

  $("#list0label").html(list.dbdata[0].label);

  $("#list0albumyear").html(list.dbdata[0].albumyear);

  $("#list0picture").html ("< img src =" / testsite/covers /' + list.dbdata [0] .picture + ' "width =" 170 "height ="170"/ >");

  
  

  for example, how can I display the 'artist', 'title', 'label' and 'album_year' within edge animate. And also how to display the 'image' (which is a JPEG file).

  
  

  I hope I can't intergrate the script within lively edge completely.

  
  

  Thank you very much

  
  

  
  

  
  

  Justin.

  Hi Justin,

  You will find 2 files of demo here: json demos upgraded.zip - Box

  Note: You can post your working file.

• My list of "Favorite" of Internet Explorer bookmarks disappeared; I can not find them - 'import of IE' that appear an out-of-date list of favorites... How to find

  I tried all the options under all items 'Help' to find my missing Favorites ("Favorites") from IE, and nothing has worked. When I tried 'Import of IE', he loaded a list of Favorites at least a year. I can't find the current bookmarks that are stored in the folder "From Internet Explorer". When I click on the Favorites (Star) icon in the upper right corner, the menu no longer displays the option to select "from Internet Explorer". The only thing I have not tried is the "Restore" option available in the "library" under "Import and backup" window: I don't know which of the files listed is correct, and the instructions careful that whatever files are chosen now will replace the previous file. I don't want to accidentally erase all my stored Favorites (hundreds of them) and end up with only the bookmarks I saved just recently - I don't want to end up with a set of (old) Favorites obsolete.

  You can find the entry menu import into the Manager of bookmarks (library)

  • Bookmarks > show all bookmarks > import and backup > import data from another browser
  • http://KB.mozillazine.org/Import_bookmarks

  If you can't find the IE Favorites in the folder ("Internet Explorer") or have problems with import favorites IE in Firefox, then export favorites in Internet Explorer to a HTML file and import this file in the Firefox Bookmarks Manager.
  
  This way also preserve you a sort that you did with the Favorites in Internet Explorer and the Favorites don't end up in a folder "from Internet Explorer", but will be added at the end of the file Menu bookmarks.
  
  If you don't have the menu bar in Internet Explorer, and then right-click on the toolbar above to activate the menu bar.

  • Export Favorites in Internet Explorer to a file (bookmarks.html) HTML: file > import and export
  • Import the HTML file in Firefox: bookmarks > show all bookmarks > import and backup > import HTML: from a file

  See "Import from another browser" and "import from file":

  • http://KB.mozillazine.org/Import_bookmarks

• What is - this and how to fix it? incorrect text data fromyog33.games.ac4

  When I log in to yahoo games room, right after java say loading page a message just to say data incorrect text of yog33.games.ac4.yahoo.com/98.136.139.9 can someone please help thx

  Hi Theresa,

  Thanks for posting this question in the Microsoft Community.

  I'll do my best to help you, but please answer to these questions before you begin troubleshooting.

  1. which version of the Windows operating system is installed in the computer?

  2. what browser do you use?

  3. will the Yahoo Games-specific question?

  4. do you have a security program installed in the computer?

  5. are you aware of any changes made to the computer before the show?

  Provide us with more information so that we are able to help you the best.

• WebView ListView data Page

  I have a ListView that ItemData containing Web sites. When you select an item, it pushes a page from the data. I can view the data. Then I have an action button that pushes another page with a WebView. The problem I have is that the WebView never is completed and said that the web page is unavilable. I have a label that does not display the correct Web page and I can also get the Web page to display if I put the url directly to the page.

  Here is the code:

      actions:  [
          ActionItem {
              title: qsTr("View")
              imageSource: "asset:///icons/actions/view.png"
              onTriggered: {
                  var page = htmlPage.createObject();
                  page.url = "http://www.google.com";
                  console.log(page.url);
                  navPane.push(page);
              }
  
          }
      ]
  

  import bb.cascades 1.2
  
  Page {
  
      property string  url
  
      id: htmlPage
      Container {
          preferredWidth: Infinity
          preferredHeight: Infinity
          verticalAlignment: VerticalAlignment.Center
          horizontalAlignment: HorizontalAlignment.Center
          WebView {
              id: webView
              settings.background: Color.Black
              url: url
          }
         Label {
             text: url
             textStyle.fontSize: FontSize.XXSmall
          }
      }
  }
  

  I tried a lot of different things without success. Anyone have this type of process work?

  All of a sudden, it came to me.

      property alias url : webView.url
  

• PB 2.0 + tutorial on custom data lists

  Hello

  I'm looking for a tutorial on making custom lists qnx/air for Playbook. An example of such lists can be found in the application schedule-OS2.0, email apps etc. List of data items.

  What classes should I use to implement this?

  https://developer.blackberry.com/air/apis/qnx/fuse/ui/listClasses/package-detail.html ?

  The default list class provides only one line of text. I need several lines and the ability to change the font style / of each list item.

  Lists have their own style and several lines of text in each element of the list.

  Also, how to make custom with a State mouse_down buttons on. When I type an icon it is applied a blue background effect to meet the State.

  Thanks in advance.

  For your list, perhaps you are looking for:

  https://developer.BlackBerry.com/air/documentation/ww_air_developing/Creating_a_custom_list_ms_19710...

  For the buttons may be looking for this: https://developer.blackberry.com/air/documentation/ww_air_developing/Skinning_your_UI_components_ms _...