Questions tagged [blackberry-cascades]

BlackBerry Cascades framework contains tools and APIs that you can use to build rich applications using Cascades libraries and Qt libraries.

The Cascades framework includes the following:

Cascades UI and platform APIs

You can use the Cascades UI APIs to create stunning interactions, while the platform APIs provide access to the underlying features of the BlackBerry Application Platform. You can use the Cascades UI and platform APIs to do almost anything you need to create great apps, including:

  • Develop your UI in C++, Qt Modeling Language (QML), or both
  • Take advantage of core UI controls, or expand on them and create your own custom controls
  • Communicate over mobile and Wi-Fi networks
  • Record and play media files
  • Store and retrieve data
  • Manage certificates and use cryptographic protocols

Cascades Builder

Cascades Builder is built into the QNX Momentics IDE and lets you design your UI using a visual interface. When you change the code that represents your UI, you can see the effects immediately in the design view.

Qt APIs

The Cascades framework is built using the Qt application framework. This architecture allows Cascades to leverage the Qt object model, event model, and threading model. The slots and signals mechanism in Qt allows for powerful and flexible inter-object communication. The Cascades framework incorporates features of fundamental Qt classes (such as QtCore, QtNetwork, QtXml, and QtSql, and others) and builds on them.

Source Code

Sample Source Code at Developer Site

Cascades-Samples Code at Github

Cascades-Community-Samples at Github

Documentation

1. Documentation

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ReverseGeocoding in BlackBerry 10

could anyone tell me how to do Reverse geocoding in BB10. I have got latitude , longitude and now I need to convert it into address.
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Crash when removing a QML object that called an event

I am experiencing a frustrating crash on BB10 cascades. I have a "Dashboard" page which has a dynamic amount of items in it. The items themselves have contextActions. One of the actions being to remove the item from the dashboard. However when I…
hyarion
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QML (Cascades) - insert container at position

Cascades, 10.2 SDK MyCustomContainer.qml: import bb.cascades 1.2 Container { id: rootContainer Container{ id: childContainer // some content } } MyPage.qml: import bb.cascades 1.2 Page { MyCustomContainer{ …
Mercurial
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How to launch another app within an app with the targets ID in blackberry10

I am trying to invoke an app within a thread of another app. I have the target app's unique id. I do not need to do modifications in the source code of the target app. How do I launch the target app?
DesirePRG
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How to read a text from a text field from c++

I have a text field and a button purely designed in c++(without importing a qml doc). How do i read the text from the text field when I click the buton. I am unable to find a function associated for that.
DesirePRG
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Is it possible to listen for an event from an app, from outside of that app

I need to listen for touch events from a specific app(in blackberry 10 os). I am planning to write another app which does this. Is this possible? APP A- the app which exists APP B- The app i am going to write what sort of modification do i need to…
DesirePRG
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How to convert date format into string in BlackBerry 10

I need to get date and time of received and sent messages . I used deviceTimestamp() method of Message class but this returns obj of QDateTime but I want this in String . So could anyone please tell me how should I do this or any other way of…
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What is the connection between QObject and a Cascade control

If we take a class such as "bb/cascades/Button" or "bb/cascades/Label" what connection does it have with QObjects? Are all core controls in cascade are also QObjects?
DesirePRG
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BB10 Show System Dialog in QThread Slot is not working

Im trying to show dialog in thread, it shows for the first time. If I dont use isAlert, it shows 10-15 dialogs Here is my code: bool isAlert; void MyThread::ShowAlert(const QString &message) { if(!isAlert){ SystemDialog *myDialog = new…
Satish Bejgum
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Getting Device Location in BLACKbERRY 10

I am developing one app in BlackBerry 10 in which I need to get device location in latitude, longitude and then want to get address .I have gone through blackberry docs sample app but its very complicated . Could anyone please tell me how should I…
BB10
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Login Screen using Blackberry10 Cascades Development

I am new to blackberry 10 cascades development. I want to develop a login screen where user name and password will be asked. If correct credentials are entered it will be redirected to another screen. On searching i found NavigationPane to be…
Scientist
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Dynamicaly manage actions in a Cascades multi-selection handler

I try to handle a set of actions for multiple items selection on a ListView. The context: a RSS reader. An article can be read/unread, marked/unmarked, published/unpublished. Currently, my code adds every possible action when the multi-selection is…
Marc Plano-Lesay
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how to send a push notification to single user in BB 10 cascades

I have integrated PushCollector App to my app for pushnotifications and also hard coded the PPG URL, APP ID User ID and Password etc in my App. Now my question is how to send the push notification to single user rather than all users at a time.I…
Sharath
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How to convert Unicode to UTF8 in BB10 cascades

I am working with TCP socket which I receive unicode data data for every 1 sec, data includes arabic text. That unicode data I need to convert it to UTF8 and pass to JSON How to convert unicode to UTF8 in blackberry 10 qt cascades.? I am using the…
user2085965
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Web service in blackberry 10

I am developing a BlackBerry 10 apps with Cascades (C++ programming language) right now. Can anyone tell me how do i make a call to web service in BlackBerry 10: Cascades? I'm just a beginner, so i don't really know anything. Thanks for your answer
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