programacion blackberry 10
Post on 28-Apr-2015
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DESCRIPTION
TRANSCRIPT
NDK UI/UX Basics using Cascades
The Game
Demo
2
Agenda
IDE introduction
Layouting basics
Lists & list items
Screen navigation
3
4
Create your first app
NDK icon
NDK start up script
5
Create your first app
6
Create your first app
7
Create your first app
8
Create your first app
9
Create your first app
10
Create your first app
11
Development mode
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Create your first app
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Create your first app
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Create your first app
15
Create your first app
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Create your first app
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Preview
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19
20
Debugging on Device
Debug using Breakpoints
Or log messages
C++: qDebug()<<“Console message”
QML: console.log(“Console Message”)
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Questions?
25
Core Controls
Standard UI components
Pre-packaged design
Available in QML and C++
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Start screen
Controls covered:
Page
Container
Button
ImageView
Layouts covered:
DockLayout
StackLayout
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StartScreen.qml
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import bb.cascades 1.0 Page { Container { Button { text: "Play" } ImageView { imageSource: "asset:///images/bg_turtle.png" } } }
StartScreen.qml
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Layouts
UI that scales
Screen sizes
Resolutions
Help with control positioning
StackLayout – Relation to other Controls
DockLayout – Relation to the parent Container
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Start screen
StackLayout:
Buttons
DockLayout:
Header
Turtle
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StartScreen.qml
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Page { Container { layout: DockLayout { } ImageView { imageSource: "asset:///images/bg.png" } Button { text: "Play" } ImageView { imageSource: "asset:///images/bg_turtle.png" } } }
StartScreen.qml
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Page { Container { layout: DockLayout { } ImageView { imageSource: "asset:///images/bg.png" } Button { text: "Play" } ImageView { imageSource: "asset:///images/bg_turtle.png" } } }
StartScreen.qml
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Page { Container { layout: DockLayout {} ImageView { imageSource: "asset:///images/bg.png" } Container { // our added container. StackLayout is default Button { text: "Play" } ImageView { imageSource: "asset:///images/bg_turtle.png" } } } }
StartScreen.qml
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Page { Container { layout: DockLayout {} ImageView { imageSource: "asset:///images/bg.png" } Container { // our added container. StackLayout is default Button { text: "Play" } ImageView { imageSource: "asset:///images/bg_turtle.png" } } } }
StartScreen.qml
Alignment example
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Button { horizontalAlignment: HorizontalAlignment.Left verticalAlignment: VerticalAlignment.Bottom }
StartScreen.qml
...
Container {
layout: StackLayout {}
horizontalAlignment: HorizontalAlignment.Center
verticalAlignment: VerticalAlignment.Center
Button {
text: "Play"
}
ImageView {
imageSource: "asset:///images/bg_turtle.png"
}
}
...
37
StartScreen.qml
...
Container {
layout: StackLayout {}
horizontalAlignment: HorizontalAlignment.Center
verticalAlignment: VerticalAlignment.Center
Button {
text: "Play"
}
ImageView {
imageSource: "asset:///images/bg_turtle.png"
}
}
...
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StartScreen.qml
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import bb.cascades 1.0 Page { Container { layout: DockLayout {} ImageView { imageSource: "asset:///images/bg.png" } Container { horizontalAlignment: HorizontalAlignment.Center verticalAlignment: VerticalAlignment.Center Button { text: "Play" } } ImageView { horizontalAlignment: HorizontalAlignment.Left verticalAlignment: VerticalAlignment.Center imageSource: "asset:///images/bg_turtle.png" } } }
StartScreen.qml
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import bb.cascades 1.0 Page { Container { layout: DockLayout {} ImageView { imageSource: "asset:///images/bg.png" } Container { horizontalAlignment: HorizontalAlignment.Center verticalAlignment: VerticalAlignment.Center Button { text: "Play" } } ImageView { horizontalAlignment: HorizontalAlignment.Left verticalAlignment: VerticalAlignment.Center imageSource: "asset:///images/bg_turtle.png" } } }
Start screen - Exercise
Try to replicate the screen to the right by using layouts, image and buttons
horizontalAlignment:
HorizontalAlignment.Fill / HorizontalAlignment.Center / HorizontalAlignment.Left / HorizontalAlignment.Right
verticalAlignment:
VerticalAlignment.Fill / VerticalAlignmentt.Center / VerticalAlignmentt.Left / VerticalAlignment.Right
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Importing a project
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QML Components
Group QML into Components
Project overview
Readable code
Reusable code
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QML Components – Exercise
New file: StartScreen.qml
Move the content of your Page to StartScreen.qml
(import bb.cascades in all QML files)
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// file: main.qml import bb.cascades 1.0 Page { StartScreen {} }
High Score Screen
Label
ListView
ListItemComponents
XmlDataModel
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ListView
Highscore xml data model:
<root>
<item name="Mattias" time="50000" moves="15"/>
<item name="Olof" time="49800" moves="8"/>
<item name="Shailesh" time="37500" moves="54"/>
</root>
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ListView
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ListView { dataModel: XmlDataModel { source: "highscoredb/highscore.xml" } listItemComponents: [ ListItemComponent { type: "item" StandardListItem { title: ListItemData.name } } ] }
Custom List Item
...
ListItemComponent {
type: "item"
Container {
layout: StackLayout {
orientation: LayoutOrientation.LeftToRight
}
Label {
text: ListItemData.name
}
}
}
...
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QML Component as List Item
// file: HighscoreListItem.qml
import bb.cascades 1.0
Container {
layout: StackLayout {
orientation: LayoutOrientation.LeftToRight
}
Label {
text: ListItemData.name
}
}
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QML Component as List Item
ListView {
dataModel: XmlDataModel {
source: "highscoredb/highscore.xml"
}
listItemComponents: [
ListItemComponent {
type: "item"
HighscoreListItem {
}
}
]
} 50
Label layouting
List items
StackLayout
spaceQuota
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sQ = 1 sQ = 5 sQ = 2 sQ = 2
Label layouting
Container {
layout: StackLayout {
orientation: LayoutOrientation.LeftToRight
}
Label {
layoutProperties: StackLayoutProperties {
spaceQuota: 1
}
}
Label {
layoutProperties: StackLayoutProperties {
spaceQuota: 3
}
}
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HighScoreScreen - Exercise
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Create a ListView with an XML data model and your own List Item
Navigation
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push push
pop pop
NavigationPane
import bb.cascades 1.0
NavigationPane {
Page {
id: firstPage
Container {
Button {
text: "Do Something"
}
}
}
}
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Attached Objects
import bb.cascades 1.0
NavigationPane {
Page {
id: firstPage
Container {
Button {
text: "Do Something"
}
}
}
attachedObjects: [
...
]
} 56
Attached Objects
attachedObjects: [
Page {
id: secondPage
...
},
Page {
id: thirdPage
...
}
]
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ComponentDefinition
attachedObjects: [
ComponentDefinition {
id: secondPage
source: "MySecondPage.qml"
},
ComponentDefinition {
id: thirdPage
source: "MyThirdPage.qml"
},
]
secondPage.createObject()
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Signals
Button {
text: "Do Something"
onClicked: {
console.debug(“Click")
nav.push(secondPage.createObject());
}
}
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NavigationPane - Exercise
Set up navigation
between the two
Pages you create
in the previous
exercises.
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Summary
IDE introduction
Layouting basics
Lists & list items
Screen navigation
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Questions?
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Thank You
Navigation continued
64 TabbedPane Side bar Sheet
Contextual menu/
Action overflow menu
Core Controls
65
SegmentedControl
ProgressIndicator
ActivityIndicator
DateTimePicker
Slider
ToggleButton
WebView
ForeignWindow
…
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