mobile computing wahlpflichtfach blackberry sommersemester 2013 dipl.-ing. andre pura source:

MOBILE COMPUTING WAHLPFLICHTFACH BLACKBERRYSommersemester 2013Dipl.-Ing. Andre Pura

Source: https://developer.blackberry.com/cascades/documentation/

andre.pura@mappau.com 2

OVERVIEW

• Introduction• BlackBerry Enterprise Server• Basics in BB10 and IDE• BlackBerry 10 Concepts• Cascades• GUI• Invocation Framework• Cards• Menu-Integration• Data Storage• Communication• Location Services• More ...

INTRODUCTION: BB10

WHAT IS BLACKBERRY10 (BB10)

• BlackBerry 10 is an operation system for mobile devices

• Based on QNX• QNX was bought in 2010 by BlackBerry

(vormals Research in Motion)• Micro Kernel Betriebssystem• First used by BlackBerry in the BlackBerry

PlayBook (BlackBerry Tablet OS)Quelle: http://www.qnx.com

DIFFERENCE TO MONOLITHIC KERNEL

• Most components run in their own processes• Each process runs in its own area

Process A

Process B

Memory of Process BMonolithic Kernel

Micro Kernel

Overwrite

Close process Quelle: Embedded systems security, by Kleidermacher and Kleidermacher, Elsevier 2012

ADVANTAGES AND DISADVANTAGES

• Advantages – If a component crashes, the system stays alive– Drivers must not be a part of the kernel

• Disadvantages– Performance, a lot of context changes are

necessarly– Synchronize of the processes

DIFFERENCE TO OTHER PLATFORMS

• Competitors:– iOS– Android– Windows Phone– Symbian

DIFFERENCE TO OTHER PLATFORMS

• Unterschied zu anderen PlattformenAndroid iOS BlackBerry OS

BlackBerry 10Windows Phone

Symbian

Language Java, C++ Objective C Java ME, C++ C# C++, Java ME

Models 900+ 11 60+ 21 1000+

Available Apps (Feb. 2013)

845 000+ 770 000+ 100 000+ 120 000+ 115 000+

Advantages Open Source, a lot of examples and code

A few devices, Good API

Good support, fast growing market

Small amount of Apps, good support, few devices

High market penetration

Disadvantages

Many apps, a lot of different devices

Many Apps, restrictive market policy

Small API, documentation

Low market penetration

A lot of differnt devices

BLACKBERRY10 PLATFORM

• Up to now, you had to use Java to develop for BlackBerry

• Now:

Adobe Air

Cascades / QT

Native / C++HTML 5

Android Emulator

Source: https://developer.blackberry.com/develop/platform_choice/index.html

THE „OTHERS“

• HTML– Webworks, JavaScript and HTML based

• Adobe Air– Actionscript / Flex based

• Android Emulator– Java/Android based, Android 2.3.3

CASCADES VS NATIVE

Cascades• QT/C++• A lot of BB10 APIs• Fast development• GUI is seperated from

Native• Fast porting of existing

C++ / openGL applications

• Longer development process

• Pure „code“• POSIX compliance• Simple integration of

OpenSource LibrariesQuelle: https://developer.blackberry.com/develop/platform_choice/ndk.html

CASCADES

• Supported by tat• Integrated Animations• Interface to Photoshop

– Direct export from Photoshop to QML• Simple communication with C++ classes• Native Multi-Language support• Qt integragted• Eclipse GUI Plugin• Hard to port applications• A little bit less performance than pure native• More information:

https://developer.blackberry.com/cascades/

BLACKBERRY ENTERPRISE SERVERIng. Elmar Jilka, MSc

BASICS: BB10 PROGRAMMING AND GUI

COMPONENTS OF A BB10 CASCADES APPLICATION

• A Cascades Application has 3 parts:– bar-descriptor.xml– main.cpp– .qml File

DAS BAR-DESCRIPTOR.XML

• Descriptes the basics of an application – Name– ID– Versionsnumber– Author– Plattform– Icon– Splashscreen– Application Files– Permissions

MAIN.CPP

• Startpoint of each BB10 Cascades Application• It can consist of the application itself or call an

object, inherit from application

.QML LAYOUT FILE

• A QML File describes a layout• Save it in the assets folder• A layout should have at least one component• Define the mayor layout in the first file

• User is king !• Organize the information in a

logical way• What will the user do next ?• Adapt the menu to the current

screen• Invoke other applications and

funcitons• Use shortcuts Source: https://developer.blackberry.com/cascades/documentation/

BASIC ELEMENTS

• BB10 has 2 typical sctructures– Tabs– Drill-Down (Navigation Pane)

• It is possible to combine both

• Using tabs, it is possible to access screens directly

• 4 Tabs can be placed on the bottom bar

• There is more space in the sidebar

DRILL-DOWN

• Drill-Down (Navigation Pane) a hierachical structure of screens

• Screens are pushed over each other

RESOLUTIONS

?Source: https://developer.blackberry.com/cascades/documentation/

HANDLING DIFFERENT RESOLUTIONS (10.1)

Verschiedene Auflösungen

Ein Layout für alle

Anpassung per relativem

Layout

Scrollview

Dynamische Skalierung

Pro Auflösung ein Layout

Ordner mit Layout für

720x720

1280x768

1280x720

KEYBOARD

• There are physical (Q10) and virtual keyboards

• Since 10.1 both types should be supported

• Use shortcuts for physical keyboards

• Think about the space for a virtual keyboard

BASICS

• Everything in QML is possible in C++• But not everytihng in C++ is possible in QML• Simple GUI Elements:– Button– Label– TextField– CheckBox– ToggleButton– Slider

GENERATE THE GUI

• Using QML

• Using C++

CASCADES EVENT SYSTEM

• Signals & Slots (Qt based)• Every GUI interaction emits a Signal, which can

be connected to n slots

Click on Button

N obects,Are connected to a signal

Signal

LAYOUTS

• There are threee kinds of layouts

Stack Layout Dock Layout Absolute Layout

QML AND C++ INTEGRATION

• Load QML from C++

CHANGE QML ATTRIBUTES PROGRAMMATICALLY

• It is simple to change QML attributes from C++

QML Code

QML ATTRIBUTES

USING C++ VALUES IN QML

• Connection with a QDeclarativePropertyMap

Registrier the Mapin QML

ACCESS CUSTOM OBJECTS IN QML I

• It is possible to acces C++ objects from QML

ZUGRIFF AUF CUSTOM OBJECTS IN QML I

Macro for Qt Signals / Slots

Variablename in QML

Called, when the variable is read

Called, when the variable is changed in QML

Signal to emit

• Es kann auch ein eigenes Objekt in QML verwendet werden

Variablename in QML Called, when the variable is read

Called, when the variable is changed in QML

Signal to emit

• Es kann auch ein eigenes Objekt in QML verwendet werden

Function used in QML

ZUGRIFF AUF CUSTOM OBJECTS IN QML II

• Register the C++ object to use it in QML

• It is simple to access values from the object in QML

INSTALLATION OF THE IDE

DOWNLOAD

• SDK download: – https://developer.blackberry.com/cascades/

download

CODE SIGNING KEYS

• Order Code Signing Keys :– https://www.blackberry.com/SignedKeys/

codesigning.html• Important: Backup the keys !

SIMULATOR DOWNLOAD AND INSTALL

• Download the simulator– https://developer.blackberry.com/develop/

simulator/index.html

START IDE

IDE - MENU

IDE – DIRECTORIES AND FILES

Projects and files of the projects

IDE – FUNCTIONS AND VARIABLES

Functions and variables

IDE - INFORMATION

Information

IDE - ACTIONS

Actions

IDE ACTIONS

Choose SDK Version

IDE ACTIONS

SDK Version wählen

SDK Version nachladen

IDE ACTIONS

SDK Version wählen

Neues Projekt, neue Klasse,

neues Sourcefile anlegen

IDE ACTIONS

SDK Version wählen

Projekt kompilieren

IDE ACTIONS

SDK Version wählen

Projekt kompilieren

Konfiguration ändern

IDE ACTIONS

SDK Version wählen

Projekt kompilieren

Debugging starten

IDE ACTIONS

SDK Version wählen

Projekt kompilieren

Debugging starten

Ausführen ohne

Debugging

IDE ACTIONS

SDK Version wählen

Projekt kompilieren

Debugging starten

Ausführen ohne

Debugging

Sicht ändern

IDE - VIEWS

• Application Profiler• QML Editing• C++ Editing• Debug• System Information

QML EDITOR

Cascades Components

QML Code

Schematic layout

QML Eigenschaften

SYSTEM INFORMATION

Target

Target Information

SYSTEM INFORMATION - SUMMARY

SYSTEM INFORMATION – PROCESS INFO

SYSTEM INFORMATION – MEMORY INFO

SYSTEM INFORMATION – MALLOC INFO

SYSTEM INFORMATION – FILE EXPLORER

FIRST BB10 APP

FIRST APP

• Installation done?• Keys ordered?• Simulator installed?• Device in Developer Mode?– (Settings / Security and Privacy /

Developermode)

• Create a new project• Signing Keys• Backup the Signing Keys• Connect Device• Create Debug Token• Deploy and debug the application

CREATE A NEW PROJECT

SIGNING KEYS AND CERTIFICATE

Unter Windows: Extras -> Einstellungen

Register the Signing Keys

Generate the developer certificate

SIGNING KEYS AND CERTIFICATE - BACKUP

Backup keys

CONNECT THE DEVICE/SIMULATOR

• Connect the device via Micro USB or start the simulator

• To start the simulator use VMWare Fusion• Connect the device with the IDE

START DEBUGGING

Activate and click apply

START DEBUGGING

Start Debugging

START DEBUGGING

THE DEBUGGING VIEW OPENS

• Open the device log

messesage Project ID Process ID

APPLICATION STOPS AT THE „BREAK POINT“• The applications stops at the beginning or the first

break-point

• To resume the application press F8 or the Software key• Shortcuts:

– F5 : Step Into– F6 : Step over– F7 : Step return

• Erzeugen Sie in der „Hello World“ Applikation ein zweites Textfeld

• Dieses soll in roter Schrift oben-mittig platziert sein

• Rotieren Sie das erste, schwarze Textfeld um 90° gegen den Uhrzeigersinn

• Geben Sie den Textfeldern IDs:– lblSchwarz– lblRot

BLACKBERRY 10CONCEPTS

USE C++ CLASSES IN QML

• Yesterday, the object was generated in C++ and used in QML

• But it is also possible to generate an object in QML

USE C++ CLASSES IN QML

• The object must be registered and can be used in QML directly

extends

HOW CAN WE ACCESS C++ FROM QML ?

1. Create C++ Object in QML– Register Class in QML, create the object in C++

2. Pass a C++ Object to QML– Create object in C++, pass it to qml

3. Using the PropertyMap (Gleich 2.) – Generate a PropertyMap and push it to QML

HOW CAN WE ACCESS QML FROM C++ ?

1. C++ Objekt nach QML übergeben– Objekt in C++ erzeugen, Objekt nach QML

übergeben

2. Property direkt im Code ändern– Das Objekt aus dem Root-Objekt extrahieren und

die Property setzen

APPLICATION LIFETIME

• Each application runs through the cyclus• At the moment it is not possible to generate

an application without a GUI (should be possible with 10.2)

• An application in the „background“ is alwaysa visible as an „Active Frame“

• If the permission „run in background“ is enabled, the „stopped“ state does not exist

• Each application has 3 different states:– Fullscreen– Thumbnail– Invisible

CASCADES ❤ JAVASCRIPT

• JavaScript can be used in QML• Inline Code• Using an external library• Usually JavaScript is used to react on signals

Source: http://www.crackberry.com

JAVASCRIPT IN CASCADES

INLINE JAVASCRIPT IN CASCADES

Signal

JavaScript

JAVASCRIPT IN CASCADES - FUNKTION

JavaScript

JAVASCRIPT IN CASCADES - FUNKTION

CONNECT A SIGNAL TO A JAVASCRIPT FUNCTION

Signal Function

Is there an equal way doing it ?

onClicked:{root.changeTest();

GUI ELEMENTS

BASICS ON GUI ELEMENTS

• QML Components are always on the same level in a container

• Each component can have properties and signals

• Use JavaScript to react on signals

• You can design your own components

BASICS ON GUI ELEMENTSCo

Property

Additional objects

BASICS ON GUI ELEMENTS

Property

Signal

GUI ELEMENTS- CONTAINER

• A Container is used to goupe other GUI elements

• Only a container can have childs• The alignement of the elements can be

adjusted in a container (Standard: StackLayout)

• Is a container deleted from a scene, all ist childs are deleted

• The size of the container is defined by ist childs

• Width and height can be modified with:– preferredWidth, preferredHeight– minWidth, minHeight– maxWidth, maxHeight

• Usually the background is tranparent

• Signals:– onControlAdded– onControlReplaced– onControlRemoved– onControlMoved– onLayoutChanged– onBackgroundChanged– onClipContentToBoundsChanged

GUI ELEMENTS- CONTAINERCo

Attached objects

GUI ELEMENTS- LABEL

• A label is used to show a short text• Not interactive• The visual appearance (z.B. Color) is extended

by AbstractTextControl• Important properties:– text– multiline

• Important signals:– onMultilineChanged

GUI ELEMENTS- BUTTON

• A button is an interactive GUI component• It is used for „click“ actions• Triggers actions• 3 different appearances:– Ein Bild und einen Text– Nur ein Text– Nur ein Bild

GUI ELEMENTS- BUTTON

• Important signal– onClicked (extended by AbstractButton)

• Properties– imageSource– image– text

GUI ELEMENTS- TEXTFIELD

• A TextField is an input field to interact with the user

• It can be configured for different kinds of inputs– eMail Adresse– Password– Chat– Url

GUI ELEMENTS- TEXTFIELD

• Important Properties– hintText– inputMode– validator– Input (Mit TextInputProperties)

• submitKey• flags (Spellcheck, PredictionOff)

• Important signals– onTextChanging– onValidatorChanged

GUI ELEMENTS- SLIDER

• A Slider enables the user to select a value from a defined range

• It is better to use a Slider instead of a TextField• Intuitive• Important properties– fromValue– toValue– value

• Important signal– onValueChanged

GUI ELEMENTS– SEGMENTED CONTROL

• A horizontal selector for up to 4 different actions

• Is used to change the view of the current page• Important property– selectedIndex

• Important Signal– onSelectedIndexChanged

GUI ELEMENTS– SCROLL VIEW

• A ScrollView is related to the Containers• It enables scrollig and zooming• Like all other components, a single element in

a ScrollView is allowed (But you can use a Container in it)

• Important properties– content– scrollViewProperties

GUI ELEMENTS– IMAGEVIEW

• The ImageView is used to display images• A ScrollView is used for pitch-to-zoom• Important properties– scalingMethod– imageSource

GUI ELEMENTS– WEBVIEW

• There are a lot of use cases, where it is necessary to show html or load external websites

• It is possible to load locale content and external content

• Important property– Html and/or url

• Important signals– onUrlChanged– onLoadingChanged– onMessageReceived

• html:

• url:

• Cascades can communicate with JavaScript in a WebView

• JavaScript must be enabled in the WebView• Messages are used for the communication• postMessage is used to sent a message to JavaScript,

which is embedded in a WebView• onMessageReceived is used to receive a message from

an embedded Javascript

• JavaScript, which is embedded in a WebView, can react with onmessage() and postMessage

WHY IS IT IMPORTANT TO COMMUNICATE WITH EMBEDDED JAVASCRIPT?

WARUM MIT JAVASCRIPT KOMMUNIZIEREN?

• Integrate existing content fro the Internet to the application

• Use native GUI elements to trigger actions on a webpage

• Using native GUI elements is more intuitve• Fast Cross-Platform-Developing– 1 Update for all operation systems

GUI ELEMENTS– ACTIVITY INDICATOR

• An ActivityIndicator is used to inform the user, that a background thread is working

• It is used (in difference to a progress bar), when the duration of the loading is unknown

• Important Properties– running

• Important Signals– onStarted– onStopped

• Functions– Start– Stop

Initalize the ActivityIndicator

Start the ActivityIndicator

Stop the ActivityIndicator

GUI ELEMENTS– ACTIONITEM

• ActionItems are used to define additional actions

• These Actions can be for the whole Page or a specific component (Context Menu)

• Each Action can be defined with an icon and a text

• An ActionSet combines actions to a set Source: https://developer.blackberry.com/cascades/documentation/

GUI ELEMENTS– ACTIONITEM - CONTEXTACTION

GUI ELEMENTS– ACTIONITEM – PAGE ACTION

• ActionItems placed on a Page er used to define additional actions

• Important properties– ActionItem.placement

APPLICATIONMENU

• The Application menu is not directly connected to a single page

• Usually settings and additional information about the application can be bound in the menu

• The menu is on the top• Swipe-down at the top shows/hides the menu• Important properties of the entries

– title– imageSource

• Important signal– onTriggered Source: https://developer.blackberry.com/cascades/documentation/

APPLICATIONMENU

ORIENTATION HANDLING

• There are two different orientations:– Portrait– Landscape

• Tablets usually use the landscape orientation• Smartphones usually use the portrait orientation

Hint: Q10:Portrait == Landscape Mode

• Define the usage of both orientations in the manifest

• Define the support in QML to react on orientation changes(when the GUI isloaded)

• Use the OrientationHandler to react on the orientation change

• onOrientationAboutToChange in the handler is used to react on changes

ADD GUI ELEMENTS PROGRAMMATICALLY

• In some use cases it is necessary to add GUI elements programmatically

• Remember: Use containers to add elements on the same level

• Add a container in QML and define a name for the obecjt

• Initialize the container in C++ and add the elements

BEISPIEL DER GUI ELEMENTE

• Create a new BlackBerry Cascades Projekt• Create a Button and a Label• Write 0 (zero) in the Label• If the button is clicked, increase the number in

the label by 1

• Write a function in JavaScript, which calculates the nth Fibonacci Number (If you do not know how to calculate the Fibonacci Numbers, search the internet)

• Generate a slider from 2 - 20• Generate an additional label• When the user changes the value with the

slider, calculate the nth Fiboncci Number and show it in the label

• Download Lena– http://sipi.usc.edu/database/preview/misc/4.2.04.

png• Create a new Cascades Projekt• Create an ImageView with Lena• Create an ActionItem in the context of the

ImageView– Rotate the Image on each click on the action item

• Create an ActionItem for a Page-Action• If it is triggered, change the visibility of Lena– If Lena is visibile -> invisibile– If Lena is invisibile -> visibile

• Change the text of the ActionItem on each click („visible“ <-> „invisible“)

• Create a new BlackBerry Projekt with a Navigation Pane

• Study the sourcecode• Create a new Button and create an other Page

as a new qml file• If the new button is clicked, open the new

page• If there isn‘t a back button on the page, add it.

• Create on the new page a button, which opens another page

• Create an application menu with an ActionItem

• If it is triggered, pop all pages until the first page is reached

RECAPITULATION

• Development in BB10– HTML– Native C++– Adobe Air– Cascades– Android Emulator

• Elements of an application– GUI in QML– Code in C++– Description Files (z.B. Mainfest)– Assets– You can use JavaScript in QML

RECAPITULATION

• 2 types of applications– Drill-Down– Tabs

• Important GUI Elements– Container– Label– ImageView– Button– TextField

RECAPITULATION

• Menus– Context Menu– Page Context Menu– Application Menu

• ActionItem

RECAPITULATION

• Communication between QML and C++– Generate Object in C++ and pass it to QML– PropertyMap– Import C++ Class in QML and generate objects

INVOCATION FRAMEWORK

• Use the invocation framework to call an other application

• Messages can be used to pass data• Configure your own application to be

invokable from other applications• It is possible to invoke an application without

knowing the name of the other application. Only the task is necessary

• An Invocation Request is the message sent to the system to inform the system that an application should be invoked

• Invocation Request can be used to inform another application about changes

• Attributes of a message– Target– Action– Data

INVOCATION FRAMEWORK - ATTRIBUTE

• Target– Each target application has an unique identifier– The „reverse DNS“ scheme is used (eg

com.example.myapp)• Action– Descripts the task which should be done– To call an defined action, the „reverse DNS“ scheme is

used (eg com.example.myapp.VIEW)– There are some predefined actions– These actions start with bb.action.

INVOCATION FRAMEWORK - ATTRIBUTE

• Data– Data is passed as MIME type or URI• URI describes where the data can be found• MIME type descripes the kind of data

– A small amout of data (< 16kb) can be sent directly, if the URI is data://local

– Own MIME Types start with application/vnd (eg application/vnd.mycompany.mydata)

INVOCATION FRAMEWORK – BOUND VS UNBOUND INVOCATIONS

• Bound Invocation– Knwon target– Start a known

application directly• Unbound Invocation– Known task– If no task is defined,

the Invocation Framework calls bb.action.VIEW

INVOCATION FRAMEWORK – BOUND INVOCATION

Quelle: http://devblog.blackberry.com/2012/11/bbm-invocation-framework/

INVOCATION FRAMEWORK – UNBOUND INVOCATION

Quelle: http://supportforums.blackberry.com/t5/Cascades-Development/Open-browser-from-app/td-p/1952547

INVOCATION FRAMEWORK – PROBLEMS SENDING DATA• A small amount of data can be sent directly• If the URI is used, be aware, that the called application

can access the data• If the called application cannot access the file directly, it

is copied to the called application‘s directory• It is possible to control this behaviour using the following

attributes:– Preserve– CopyReadOnly– CopyReadWrite– Link

INVOCATION FRAMEWORK – MULTIPLE FILES• Sent multiple files, adapt the MIME type

– filelist/mixed– filelist/document– filelist/media

• If all files in the same directory, the URI is the path to this directory

• If the files are in different directories, a JSON with the paths is required

INVOCATION FRAMEWORK – CORE APPLICATIONS

Quelle: http://supportforums.blackberry.com/t5/Cascades-Development/Open-browser-from-app/td-p/1952547

• A lot of the standard applications can invoked using the invocation framework

INVOCATION FRAMEWORK – RECEIVING INVOCATIONS

• It is possible to receive Invocation Requests from other applications

• Therefore you have to define your application as a target in the bar-descriptor.xml (Manifest)

INVOCATION FRAMEWORK – RECEIVING INVOCATIONS

• In addition, some lines of C++ code is required• The application have to known in which state

it was started

Connect to the InvocationManager

React on the kind of start

INVOCATION FRAMEWORK – TARGET FILTER

• Applications, which can do the job, will be identified by target filters

• These Filters are a part of <invoke-target> in the Manifest

• Attribute– Filter: Descripts the criteria of a filter– Action: The action, which can be called– MIME Type: The kind of file/data which can be opened– Uris: A scheme for the URI– Exts: the allowed extensions

INVOCATION FRAMEWORK – TARGET FILTER• There are some rules:– The URI cannot only be a Wildcard-Character (*)– If bb.action.VIEW or bb.action.OPEN is defined as an

action and if the MIME type is a wildcard , the URI cannot be data:// or file://

– If URI equals to data:// or file:// and the MIME type is a wildcard, there must be at least an extension that is not a wildcard

• If a rule is violated, you are not able to install the application on the device (Error: 884 Restricted Invoke Filter)

EXAMPLES TARGET FILTER

• Allowed– actions=bb.action.OPEN; types=*;uris=http://;– actions=bb.action.OPEN,bb.action.VIEW; types=*; uris=file://;

exts=jpg,gif,tif;– actions=bb.action.VIEW; types=*; uris=data://; exts=jpg,gif,tif;

• Not allowed– actions=bb.action.OPEN,bb.action.VIEW,bb.action.SET; types=*;

uris=file://;– actions=bb.action.OPEN; types=*; uris=data://;– actions=bb.action.VIEW; types=*; uris=*;– actions=bb.action.VIEW; types=*;– actions=bb.action.OPEN,bb.action.VIEW; types=*; uris=file://; exts=*;

2 Filter

EXAMPLE TARGET FILTER

Filter for PNGor JPEG fileswhich are in thedata or in a message

Filter for a URI with the extension of .png or .jpg

INVOCATION FRAMEWORK – HOW CAN THE FRAMEWORK DETERMINE THE RIGHT TARGET?

• If an unbound invoke is sent to the Invocation Framework, it tries to determine the right target (Process is called Invocation Brokering)

• An application is used in the process if ...– the action matches– every application used for the process, if no action

is defined

INVOCATION FRAMEWORK – HOW CAN THE FRAMEWORK DETERMINE THE RIGHT TARGET?

• At this point the MIME type and URI schemes are compared– URI Schema is equal? (if the extension is set, only if it matches too)– MIME Type equal?

• Sorting the applications– Most matching URI scheme (from the number of matching

characteristics)– If there are equal filters, the MIME type is compared– An explicit match is better than a wildcard– If there are equal filters at this point, the URI extensions are

compared– If there are equal filters, the system default is used– If there is no system default, the oldest filter is used

INVOCATION FRAMEWORK – CARD OR APPLICATION

• There are 2 options showing a preview– External application– Card

• The difference can be defined in the task:– Do you plan to make a „simple“ action with the

data and come back to the application ? -> Card– Do you want to process the data with a lot of

different methods and proceed working in the new application ? -> external application

• Cards can be used to provide the whole functionality or a part of it to another application

• Usually specialised tasks are used for cards• The card is pushed over the calling application

without closing it• An application can only call a single card by

the time. But a card can call another card

CARDS - KINDS

• There are three kinds of cards:

Picker Composer Previewer

CARDS - KINDS

• Picker– Pick existing content to use in the application (eg Files)

• Composer– Generate or edit existing content

• Previewer– Preview content

• The kind of the card defined the animation of the card and how peek is handled.

CARDS – TRANSITION – COMPOSER AND PICKER

• The transition between the application and the card is defined by the kind

CARDS – TRANSITION - PREVIEWER

CARDS – PEEKING

• The Previewer support full peeking• The Composer and Picker only support

peeking on the action bar

CARDS - DESIGN

• BlackBerry defines in the GUI Guidelines some rules

• Cards must support both orientations

• Cards are called using invocations• If the user closes the card, an signal is emitted and

can be used by the calling application• Previewer closes without an signal• Emitting the closing signal for a Composer is optional• Usually you want to have a closing signal when a

Picker is used• It is also possible to close a card from the calling

application

CARDS - CODE

• React on peek

CARDS - CODE

• React on response

CARDS - REGISTER

• Card must be registered in the manifest

CARDS - STARTMODE

• If an application is started, it must be identified, if the application was called by another application as a card or not

Connect to „invoked“ signal

Is the application called as a card?

CARDS - STARTMODE

• Wait for the „invoked“ signal and react on it

CARDS – SEND A RESPONSE

• If the card is closed, you can/must provide dan response

CARDS – RESIZE AND ORIENTATION

• Each card must support both orientations• It is possible, that the card is resized (eg if a

virtual keyboard is required). The card must react on these kind of changes

Connect to resize signal

Function, which is called on an emitted signal

EXAMPLES OF INVOCATIONS

MENU INTEGRATION

INTEGRATION IN THE CONTEXT MENU

• As we have learned, it is possible generate a context menu

• But it is possible that the operation system BB10 adds more elements automatically

• And what is even better:It is possible to be added in other applications as well

INTEGRATION INS CONTEXT MENU

• „Normal“ integration in the contextmenu

• Integrate the selection of the operation system

• Which applications are integrated is decided by BB10 using the filters

ACTIVE FRAME

• An Active Frame visual state of the thubnailed application

• The frame can be static or dynamic

• A simple static cover is better than a missing cover

• The cover itself cannot be interactive: if the user clicks on it, the application is going to the fullscreen state

ACTIVE FRAME

• A dynamic active frame should be updated rarely

• Different resolutions require different active frames

• Sometimes less information is more ...

• Style: SlatePro, regular weight, 30px height

ACTIVE FRAME – STYLE GUIDELINES

ACTIVE FRAME - STATIC

• Register the components to use them in QML

• Generate the Cover for the active frame in QML

ACTIVE FRAME - STATISCH

• Initialize the cover

• Set the cover

ACTIVE FRAME - DYNAMIC

• Usually an dynamic active frame is set in C++• Be aware of the update cycles• The dynamic content must provide additional

information for the user• The first update can be triggers by calling

update() or by connect to the thumb nailed signal (preferred)

Load GUI from QML

Trigger first update

Trigger the update every 2 hours

Call the first update, when the appication

is thumbnailed

ACTIVE FRAME – DYNAMIC- SET

EXAMPLES OF ACTIVE FRAMES

PROJECT

• Groups of 4• Think about a small project• Development time per person: 10 -15h• Kick Off Presentation on Thursday

– 5-10 min about your project– 1st Slide: Name of the group, members– Which steps do you need to reach your goal?– Who is responsible for which part ?– Which API do you want to use– Is there an equal application in the market? If there is an equal application, why is

your application „better“?• Send me your commented project until the 5th of July

– Source– Compiled BAR File– PDF with more information about your project (Members, goal, achievements)

• Create a new BB Cascades Projekt• Create 5 Buttons• Use the invocation framework to connect the clicked signal

from the buttons to:– Open a browser with orf.at– Create an eMail with: subject: „Hallo Composer“, text: „how are

you doing ?“– Open an image– Open the BlackBerry World– Generate a new „Remember“ message with: „VO nicht

vergessen“ and the description: „Das darf ich einfach nicht vergessen“

• Create another button• This button is used in Ex2

• Create a new BB Cascades Projekt• Create an ImageView• Set an Invoke Filter for this application• If the application is Invoked, the ImageView

should show the passed image.

• Add the following function to the additional button from Ex1– Start application from Ex2 with an image using the

invocation framework• Try to start application2 from the first

application

• Create a new BB Cascades Projekt• Generate a QML file for an active frame• Set the active frame for the application

• Additional:– Replace the static active frame with a dynamic

frame– Create a timer and count a number up in the

active frame

RECAPITULATION

• Elements of an application– GUI in QML– Code in C++– Description Files (z.B. Mainfest)– Assets (wobei GUIs auch Assets sind)

• You can use JavaScript in QML

RECAPITULATION

• ActionItem

RECAPITULATION

• ActiveFrame can be static and dynamic• Usually, dynamic frames are generated in C++• An ActiveFrame must support both

orientations and resizing• A lot of updates drain the battery

DATA STORAGE

CASCADES ACCES DATA

• Cascades has an advanced system access data• This system has different elements

CASCADES ACCES DATA- ELEMENTE

Raw Daten, eg JSON

Access to the raw dataEg to generate new files

Adapter to connect the GUI to acces data from QML simple and

Sorts and organizes the data to show it in the best way

The graphical representation of the

FILE SYSTEM

• There are different permissions for different folders and files

• Data, which is deployed within the application, must be in the assets directory

• The „working directory“ (application root) is the directory where the application is executed

• It is not allowed to place any data in the „working directory“ programmatically

FILE SYSTEM - STRUCTUR

Application root (r)1

1 r = read w = write s = symbolic

Installation directory (r)

FILE SYSTEM - STRUCTURBinary Files and other application ressources

Images, media files and qml documents (r)

The application has full access to this directory. It is application‘s

„Home“ directory (rw)

Databases (rw)

Log Files (r)

FILE SYSTEM - STRUCTURShared Folder: The subfolders contain the

shared files for all applications. If the

permission „access_shared“ is set, the application is allowed to write. (rws)

This folder contains data, which is shared with other applications

using the invocation framework (rw)

Temporary folder: This directory is used to save temporary files. QNX

can delete this directory, if the appication is closed (rw)

FILESYSTEM – WORKING DIRECTORY

• Different names– Application Root– Current Directory– Sandbox

• Access data using relative or absolute path– ./data– /accounts/1000/appdata/

namespace.application/data

FILESYSTEM – WORKING DIRECTORY

• Access the directories using QDir• currentPath– Path to the Working Directory of the application

• homePath– Path to the data directory of the application

• tempPath– Path to the temp directory

FILESYSTEM - ASSETS

• The assets directory is read only• If a non source code file should be deployed with the

application, it must be placed in the assets folder• If you try to change a file in the assets directory, it

must be copied to an other directory with the appropriate persmissions (eg ./data)

• The folder can be accessed from QML using „asset:///name“

FILESYSTEM – ASSETS - EXAMPLE

• Example: An image should be packed with the application, changed when the application is called the first time and showed an the following starts of the application

• Example: An image should be packed with the application, changed when the application is called the first time and showed an the following starts of the application– Copy the image to ./data and then manipulate it– Or change the image and save it to ./data

• Example: An image should be packed with the application, changed when the application is called the first time and showed an the following starts of the application– Copy the image to ./data and then manipulate it– Or change the image and save it to ./data– When the application is started, check if the image

exists in ./data. If it exists, load it from ./data. Otherwise it must be loaded from the assets folder

FILESYSTEM – READ/WRITE

• Before you can access a file, it must be checked if the parent directory exists.

• QDir can be used– Use QDir::cd(QString) to check if a directory exists– Use QDir::mkpath(QString) to generate a directory

and all its non-existing parent directories• Use QFile to access files

FILESYSTEM – READ/WRITE

• Write

• Read

JSON DATA

• JSON is often used to save data• Name:Value Pairs are saved or a batch of objects (more

information: http://www.json.org/)• It is possible to load JSON data and pass it to da

datamodel• For processing JsonDataAccess is used• Arrays are read as QVariantList• Objects are read as QVariantMap• The bb::data library is required for processing JSON

data (LIBS += -lbbdata)

JSON - CODE

Attributes of a JSON object

Generate the data model

JSON - CODE

Load JSON

JSON - CODE

Connect the datamodel with JSON

JSON - QML

XML DATA

• It is also possible to store data in a structured way using the XML scheme

• Is very common• Easier for humans to read• HTML is in the XML scheme• Accessing data in QML can be done using

XMLDataAccess• It is necessary to link against bb::data Library

(LIBS += -lbbdata)

XML DATA

XML DATA- CODE

READ XML IN QML

SQL - DATA

• It is better to store a higher amount of data in a „real“ database

• Tables• External and local databases• SqlDataAcces to access the data• The bb::data library is required (LIBS += -

lbbdata)

SQL READ

SQL WRITE

Generate database

SQL WRITE

Open database

SQL WRITE

Connect to database

SQL WRITE

Generate table and instert data

DATASOURCE QML

• SQL, JSON or XML can be loaded using QML only• DataSource must be imported

• Local and external DataSource can accessed• A DataSource can be used to organize the data in

DATASOURCE QML – EXTERNAL XML

GROUPEDATAMODEL

• This model is required to sort data for a list• It is possible to sort by different attributes• A combination of attributes is also possible– z.B. Name, Date of Birth

• The following data types cen be sort:Char, Date, Datetime, Double, Int, LongLong, String, Time, UInt, ULongLong, Url

GROUPEDATAMODEL

• It is possible to group elments

GROUPEDATAMODEL - QML

Sort by:firstName

lastName, if the firstName is equal

How should the entry look like?

STANDARDLISTITEM

• A StandardListItem can have the following attributes– Image– ImageSource– Title– Status– Description

STANDARDLISTITEM

• A StandardListItem can have the following attributes– Image– ImageSource– Title– Status– Description

EXAMPLE: HOW TO READ A RSS FEED?

• RSS = XML• External source• Linking against –lbbdata is required• Register the type to use in QML• Generate DataSource and Groupmodel• Generate a list• Load• Done

No grouping and sort by the date of publishing

url to the RSS feed and where the single items can

be found

/rss/channel/item

If there is existing data, delete it and add the new

Connect the list with the DataModel

How a ListItem looks like

Load RSS Feed

COMMUNICATION

NETWORKING

• In mobile computing it is in a lot of cases necessary to communicate with a server

• A request is sent to a server• A reply is received• It is necessary to allow the application access

the internet by setting the permission

NETWORKING

• Push is used to send a small amount of data to n devices

• It is possible to push up to 8kb of data• A server distributes the push notification to n

devices• Usually push is used to inform the user about

new information• A new push message should be displayed using

notifications

1. The Content Provider sends Push-Request

2. The BlackBerry server replies3. The BlackBerry server sends data to the

devices4. The devices reply5. The BlackBerry server passes the replies

to the Content Provider6. The Content Provider approves the

receiving of the replies

• It is possible to send a message to– A single device (unicast)– All registered devices (broadcast)– A part of the registered devices (multicast)

• It is better to use push, than pulling content in the background

• BIS (BlackBerry Internet Service) BES (BlackBerry Enterprise Service) Push

• To use BIS push, an application must be registered

PUSH - MANIFEST

• Permessions to receive push messages

• Using the invocation framework, the application is startet with the pushed data

PUSH - MANIFEST

• Permissions to receive push messages

• Using the invocation framework, the application is started with the pushed data

Using the bb.action.push, it is possible to identify, that the application was started using

PUSH - MANIFEST

• To start the application, when the notification is clicked:

PUSH - MANIFEST

• To start the application, when the notification is clicked:

The BlackBerry Hub tries to launch BB_OPEN_INVOCATION_ACTION, which is equal to bb.action.OPEN

PUSH - CODE

• If BB10 receives a push notification, it passes it to the registered application

• The application decides what happens with the message

PUSH - CODE

• If BB10 receives a push notification, it passes it to the registered application

• The application decides what happens with the message

If a push notification is send to the application, a notification in the hub

can be initialized

PUSH - CODE

• If the user clicks on a notification in the BlackBerry Hub the application is invoked using BB_OPEN_INVOCATION_ACTION

PUSH - CODE

• If the user clicks on a notification in the BlackBerry Hub the application is invoked using BB_OPEN_INVOCATION_ACTION

The application was called form the Hub using an invocation from a

notification

NOTIFICATIONS

• Notifications are used to inform the user about an incoming event

• An event can be e.g. a message, an update, ...

SET A NOTIFICATION PROGRAMMATICALLY

• It is easy so set an notification programmatically

SET A NOTIFICATION PROGRAMMATICALLY

• It is easy so set an notification programmatically

Initialize the notification

Set title and text

Initialize the invocation

Sent the notification to the BlackBerry Hub

DELETE A NOTIFICATION

• You should delete the notification from the hub, if it was consumed

• Single notification

• All notifications

NOTIFICATION - QML

• Notifications can be initializied using WML• Configure it:

• And deliver it to the hub

• Create a new BB Cascades Projekt• Create a txt file in the assets folder• Generate 2 buttons• If Button1 is clicked, load the content of the

textfile and save it to a QString• Show the content in a textarea (editable)• If Button2 is clicked, copy the content of the

textarea to a new file in the shared documents folder

• Create a new BB Cascades Projekt• Read the RSS Feed from the FH Hagenberghttp

://www.fh-ooe.at/index.php?id=94&type=100• Show the title and publisher date in a list• Sort the list by publishing date• Optional: group the entries by categories

• Create a new BB Cascades Projekt• Create 2 Buttons• If button1 is clicked, generate a notification

and send it to the hub• If button2 is clicked, dismiss the notifications

RECAPITULATION

• Elements of an application– GUI in QML– Code in C++– Description Files (z.B. Mainfest)– Assets (wobei GUIs auch Assets sind)

• You can use JavaScript in QML

RECAPITULATION

• ActionItem

RECAPITULATION

• ActiveFrame can be static and dynamic• Usually, dynamic frames are generated in C++• An ActiveFrame must support both

orientations and resizing• A lot of updates drain the battery

RECAPITULATION

• The file system has three different areas– Shared– Shared Invoke– Application area

• The different areas have different permissions• It is possible to access XML, JSON and SQL from QML

directly• DataSources are used to get content• The DataModel organizes and sorts the data• Lists are used to show content

RECAPITULATION

• A small amount of data can be sent to a device / devices using push

• Applications can be called using a push message• In the hub push messages can be showed as a

notification• Notifications are visible in the hub• On click on a notification an invoke is sent to

the invocation framework

COMMUNICATION

NFC (NEAR FIELD COMMUNICATION)

• A lot of mobile devices have NFC • It is possible to exchange data in a short range• NFC can be used C++ and Cascades/Qt• Not all interfaces can be found in Cascades/Qt• Simpler using Cascades/Qt• Best way: Invocation Framework

NFC – INVOCATION FRAMEWORK

• Usually NFC is used to exchange simple data

• NFC Share Card using Invocation

• Action for the Invocation: bb.action.SHARE

• If the user chooses NFC, a preview of the content is shown

NFC – INVOCATION FRAMEWORK

• If the sent data is too big using NFC, a Bluetooth handshake is initialized

• The content is submitted using Bluetooth

• Files are always sent using Bluetooth

• Data can be sent using NFCSource: https://developer.blackberry.com/cascades/documentation/

NFC – INVOCATION FRAMEWORK: FILE

NFC – INVOCATION FRAMEWORK: DATA

NFC – INVOCATION FRAMEWORK: SQUENCEDIAGRAM

NFC – INVOCATION FRAMEWORK DATA

• Direct connection, if data < 1 kb• If the receiving device can handle the

incoming data• Sender:– mimeType = application/vnd.rim.nfc.ndef– uri is empty– data = <byte array representation of custom NDEF

message>– action = bb.action.SHARE

• Receiver:– Registered with the Invocation Framework

bb.action.OPEN– mimeType = application/vnd.rim.nfc.ndef– uri = <filter>, z.B. <property var="uris"

value="ndef://1/Sp"/>

• Data should be sent to a known application (z.B. Browser)– mimeType = “text/plain” or mimeType =

“text/URI-list”– uri is Empty.– data = <text representation of your payload>– action = bb.action.SHARE

• NDEF schemes known by BlackBerry:

NFC – INVOCATION FRAMEWORK EXAMPLE DATA

NFC – INVOCATION FRAMEWORK FILE

• mimeType = <your custom mime Type>. Example:application/myapp1.

• uri = <URI encoded string to a local file located on sending device>. Example: file:///shared/myapp1/sound1.mp3

• data = “”• action = bb.action.SHARE

NFC – INVOCATION FRAMEWORK EXAMPLE FILE

NFC – CASCADES/QT

• Using Data or File• NfcShareManager• You have to inform the user about the

different steps• It is necessary to handle alle sharing events

NFC – CASCADES/QT: DATA

NFC – CASCADES/QT: FILE

NFC – CASCADES/QT: SEND

• It is possible to share data and files– NfcShareDataContent– NfcShareFilesContent

• Data is passed to NfcShareManager• Data is valid until– Is was used– the ShareMode is set to disabled

• Data is passed to NfcShareManager• Data is valid until– Is was used– the ShareMode is set to disabledExample to share data

In difference to sending data, uri is passed here.

Bluetooth will be activated and the data is sent using it

NFC – CASCADES/QT: RECEIVE

• To receive a NFC invocation, register the application

Types which are supported by the application

BLACKBERRYMESSENGER (BBM)

• Beside other communication channels, BlackBerry Messanger provides a unique way for communication

• encrypted• BBM has a lot of features

– Status updates– Video calls– Voice calls– Pin-To-Pin Messeging– Screen sharing– Text messeges– Groups

BBM CONNECT

• It is possible to connect applications to BBM• Event driven• It is possible to access– BBM user profile– Contact list– Messaging– Application profile box

BBM – BEST PRACTISE

• Sending invitations and messages– Make sure that users are the ones who initiate

requests to engage other users. – If users want to invite others to join games,

forums, or chats, you can allow users to enter their own text or you can provide default text

– Include a contextual link in messages that recipients receive, where possible.

• Choosing contacts– Provide contacts with filter options, if possible and

if meaningful to the task. – Allow users to filter contacts by contact categories

that they created in BBM.

• Chats– Make sure that users have the ability to choose the

people that they want to chat with.– When a chat begins, expose the chat interface– Make sure that you design your screens so that users

can access key features when the chat interface is open.– Make a chat interface available on multiple screens in

your application – If your application supports multiple chats, make sure

that users have a way to switch between chats.

• Profile boxes– Give users the option to add information– Always ask permission before updating– If users allow your application to update their personal

message, use the personal message field to describe a quality that is attributed to the user

– Include only new events that users accomplish or specific activities that are meaningful milestones in a profile box.

– Provide a succinct description for each event in the profile box– Include a meaningful icon for the activity or event. – Create icons that are 119 x 119 pixels.

BBM CONNECT

• Register application with BBM• Update BBM status

BBM CONNECT

Call the C++ function to update the BBM status

BBM CONNECT

Update the status

LOCATION SERVICES

• Location services are very important do the users

LOCATION SERVICES

• Location services are very important to the users– Provide location based services– Provide location based advertisment– Routing– Maps enriched applications– Combine location services with other services

LOCATION SERVICES

• Three different parts:– Positioning: Find the location of a device using

GPS satellites, cell ID, or Wi-Fi positioning.– Geocoding: Find coordinates for a street address

(geocoding), or find a street address for geospatial coordinates (reverse geocoding).

– Mapping: Display a location in a MapView or integrate with the BlackBerry Maps application.

LOCATION SERVICES

• Difference between– GPS Positioning– Celluar Positioning– WiFi Positioning

LOCATION SERVICES

• Init location service

• Retrieve a single position

LOCATION SERVICES

• Continues updates

LOCATION SERVICES

• Continues updates

LOCATION SERVICES

• If continuous updates are received, connect to the timeout signal

LOCATION SERVICES

• If continuous updates are received, connect to the timeout signal

LOCATION SERVICES

• Updates are provided every 5 seconds– Set the interval

• Are updates required in „background“

GEOPOSITIONS

• Information from the geo position– QGeoCoordinate– Direction– GroundSpeed– VerticalSpeed– MagneticVariation– HorizontalAccuracy– Vertical Accuracy– Timestamp

(REVERSE) GEOCODING

• Reverse geocoding is used to convert a GPS position into an address– Used to make a position human readable

• Geocoding is used to find coordinates for a given address– Used to make an address machine readable

REVERSE GEOCODING

Get the service providers

REVERSE GEOCODING

Set the coordinates for the reverse

process

REVERSE GEOCODING

Connect to the error and finished signal

REVERSE GEOCODING

Slots for the signals

GEOCODING

REVERSE GEOCODING

Get the service providers

REVERSE GEOCODING

Set the coordinates for the coding

process

REVERSE GEOCODING

Connect to the error and finished signal

REVERSE GEOCODING

Slots for the signals

• BlackBerry maps is installed on all BlackBerry 10 devices

• It can be used in a static or dynamic way– MapView– MapGenerator

STATIC MAP

• Initialize the map generator

• Process the reply

STATIC MAP

• Initialize the map generator

• Process the reply

MAPVIEW

• Link against LIBS += -lbbcascadesmaps• A graphics user interface (GUI) control that

displays a map along with user-defined geographic elements, which can be points of interest or other location-aware elements.

• All data shown on the map is provided by the MapData object

• It still exists, if the MapView is destroyed

MAPVIEW

Initialize the first position

MAPVIEW

Connect to the signal

ADVERTISMENT SERVICE

• Provides ads from different platforms• Simple to integrate• A lot of statistics about the usage

ADVERTISMENT SERVICE

ADVERTISMENT SERVICE : STEPS

• Register at http://adservices.blackberry.com/register/

• LIBS += -lbbcascadesadvertisement• Set persmissions– Device Identifying – GPS Location (optional)

• Register type

ADVERTISMENT SERVICE : STEPS

• Import in QML

• QML

ADDTIONAL INFORMATION

BUILD FOR BB

• Criteria– User Benefits– User Experience– Performance– Service Integration– Security– Internationalization

• Benefits– Additional area in the BlackBerry World– Additional advertisment at different events– A „thank you“ gift

• https://developer.blackberry.com/builtforblackberry/

CASCADES ROADMAP

https://developer.blackberry.com/cascades/download/roadmap/

VENDOR REGISTRATION

• No registration or submission fees. None. $0.00• Multiple monetization opportunities with in-app purchasing,

subscription billing, and mobile ad services• Crystal clear, transparent submission process• Increase the discoverability of your apps with a range of "Top 25"

lists that end users can search on both the mobile and desktop storefront versions of BlackBerry World

• Make it easy for end users to purchase your apps and digital goods by providing popular payment methods like PayPal, credit card, and direct to carrier billing (carrier dependent see below...)

• https://developer.blackberry.com/devzone/blackberryworld/apply_for_a_blackberry_world_membership_account.html#pde1350406051752

Source: https://developer.blackberry.com/devzone/blackberryworld/

RELEASE CHECKLIST

• Review tips that can help smooth the approval process and get your app up on BlackBerry World faster.

• Start with our guidelines for naming your app, then go on to create great descriptions and images to help get your app noticed.

• Check that your release is ready. Make decisions about app security, digital rights, export regulations and similar details.

• If you don't already have one, apply for a membership account on the vendor portal.

• Review guidelines and criteria to give your app the best chance for a quick approval for sale on BlackBerry World.

• Submit your app, create a release, and add any digital goods you want to sell in your app.

Source: https://developer.blackberry.com/devzone/blackberryworld/

ADDITIONAL LINKS

• Documentation– https://developer.blackberry.com/cascades/documentation/

• BlackBerry News– http://crackberry.com/

• Developer Forum– http://supportforums.blackberry.com/t5/Cascades-Development/bd-p/

Cascades• Samples

– https://github.com/blackberry/• Code Snippets

– http://cascadescode.tumblr.com/• Vendor Portal

– https://appworld.blackberry.com/isvportal/login_input.do?pageId=0

COPYRIGHT

• Create a new BlackBerry Cascades Project• Read the JSON Data from – http://dienststellen.bmf.gv.at/finanzamtsliste.json

• Show the data in a list, sorted by the name• Generate a second page, which shows the

details of the selected name• If an entry in the list is triggered, open the

second page with the details for the selected name

• Think about useful invocations and include them (at least 1). If you define the invocation as a context action, define also an icon! (search for the bb standard icons on the web)

• Is grouping possible? What would be a good grouping argument

• Optional:– Generate a static map of the location and add it to the

details page– Load the image data included in the json asynchronously– Implement an Activity Indicator as a loading sign

012345678910

indexPath

PROJECT: CERTIFICATE SIGNING

• Signing documents directly an the smartphone• Used for

– Sign a document on the smartphone to use it in govermental transactions– Time logging systems– Banking application

• Signing server structural is provided• Usage using the „share“ invocation• Supported by

– BlackBerry Austria– BlackBerry Germany– mappau– Bundeskanzleramt (BKA)– Genoa

mobile computing wahlpflichtfach blackberry sommersemester 2013 dipl.-ing. andre pura source:

ide blackberry

comcascadesdocumentation

blackberry10 bb10 blackberry

blackberry vormals research

lot of differnt devices

lot of different devices

mobile devices

c objective cjava

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