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8/12/2019 Blackberry 10 App Development
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!"#$%&'$() +Roll No. A043 Name: Veerdhwaj Singh Rathore
Class: B.Tech IT 3rdYear Batch: A3
Date of Experiment: 27 Jan 14 Date of submission: 01 Feb 14
1. Program Scenario and Program code:scenario: to prepare an app in whichwith the movement of the slide bar the image displayed changes from night to
day and vice-versa.
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3. !"#$%&'()*+: The application is a combine display of containers image and slidebars. The movement of the slide bar changes the display image from night to day
as it is linked to the images via signal onImmediateValuechanged.
4. Questions:a. Draw & Explain the Scene Graph of the experiment.Page
Container
Container
Imageview
Imageview
Container
Imageview
Slidebar
Imageview
The main container is divided into two different containers in which the first
container consists of the day/night images and the second container consists of
the sun/moon image and the slider which initiates the change in the image
present in the first container.
b. Explain the significance of using dock and stack with properties used theexperiment.
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!"#$%&'$() +Dock: helps one image to superimpose on the other such that they change
gradually with a move on the slidebar. Stack: helps the components in the
last container i.e. the image of moon, slidebar and sun to appear in a
specific pattern (space quota) that would not change with change in
orientation.c. Explain the slider component with its properties and signals.
Slider is a component which is more less like a seek bar in music player.
It has many properties such as borders margins etc. The one main signal
used here w.r.t. slider and the image is
onImmediateValueChange: shows a gradual movement. A slowtransformation in the opacity of the image in this application.
onValuechanged: shows abrupt change in the image i.e. at either
maximum or minimum values.
5. Conclusion:Through this experiment we have successfully studied andimplemented the slider component and also studied how we can change the
image present in an Imageviewwith another Imageviewusing the variation in thevalues of the slider.