AI2 Component  (Version nb184)
com.google.appinventor.components.runtime.FeatureCollection Class Reference
Inheritance diagram for com.google.appinventor.components.runtime.FeatureCollection:
com.google.appinventor.components.runtime.MapFeatureContainerBase com.google.appinventor.components.runtime.util.MapFactory.MapFeatureCollection com.google.appinventor.components.runtime.AndroidViewComponent com.google.appinventor.components.runtime.util.MapFactory.MapFeatureContainer com.google.appinventor.components.runtime.util.MapFactory.MapFeatureContainer com.google.appinventor.components.runtime.VisibleComponent com.google.appinventor.components.runtime.ComponentContainer com.google.appinventor.components.runtime.ComponentContainer com.google.appinventor.components.runtime.Component

Public Member Functions

 FeatureCollection (MapFactory.MapFeatureContainer container)
 
void FeaturesFromGeoJSON (String geojson)
 
void GotFeatures (String url, YailList features)
 
void Source (String source)
 
String Source ()
 
boolean Visible ()
 
void Visible (boolean visibility)
 
View getView ()
 
Map getMap ()
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.MapFeatureContainerBase
void Features (YailList features)
 
YailList Features ()
 
void FeatureClick (MapFactory.MapFeature feature)
 
void FeatureLongClick (MapFactory.MapFeature feature)
 
void FeatureStartDrag (MapFactory.MapFeature feature)
 
void FeatureDrag (MapFactory.MapFeature feature)
 
void FeatureStopDrag (MapFactory.MapFeature feature)
 
void LoadFromURL (final String url)
 
Object FeatureFromDescription (YailList description)
 
void LoadError (String url, int responseCode, String errorMessage)
 
Activity $context ()
 
Form $form ()
 
void $add (AndroidViewComponent component)
 
void setChildWidth (AndroidViewComponent component, int width)
 
void setChildHeight (AndroidViewComponent component, int height)
 
void removeFeature (MapFactory.MapFeature feature)
 
Iterator< MapFeatureiterator ()
 
void addFeature (MapFactory.MapFeature feature)
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.AndroidViewComponent
int Width ()
 
void Width (int width)
 
void WidthPercent (int pCent)
 
void setLastWidth (int width)
 
int getSetWidth ()
 
void setLastHeight (int height)
 
int getSetHeight ()
 
void CopyWidth (AndroidViewComponent sourceComponent)
 
int Height ()
 
void Height (int height)
 
void HeightPercent (int pCent)
 
void CopyHeight (AndroidViewComponent sourceComponent)
 
int Column ()
 
void Column (int column)
 
int Row ()
 
void Row (int row)
 
HandlesEventDispatching getDispatchDelegate ()
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.util.MapFactory.MapFeatureContainer
void FeatureClick (MapFeature feature)
 
void FeatureLongClick (MapFeature feature)
 
void FeatureStartDrag (MapFeature feature)
 
void FeatureDrag (MapFeature feature)
 
void FeatureStopDrag (MapFeature feature)
 
void addFeature (MapFeature feature)
 
void removeFeature (MapFeature feature)
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.ComponentContainer
int Width ()
 
int Height ()
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.util.MapFactory.MapFeatureCollection
YailList Features ()
 
void LoadFromURL (String url)
 
void LoadError (String url, int code, String message)
 

Additional Inherited Members

- Static Public Attributes inherited from com.google.appinventor.components.runtime.Component
static final String ASSET_DIRECTORY = "component"
 
static final int ALIGNMENT_NORMAL = 0
 
static final int ALIGNMENT_CENTER = 1
 
static final int ALIGNMENT_OPPOSITE = 2
 
static final int ACCELEROMETER_SENSITIVITY_WEAK = 1
 
static final int ACCELEROMETER_SENSITIVITY_MODERATE = 2
 
static final int ACCELEROMETER_SENSITIVITY_STRONG = 3
 
static final int BUTTON_SHAPE_DEFAULT = 0
 
static final int BUTTON_SHAPE_ROUNDED = 1
 
static final int BUTTON_SHAPE_RECT = 2
 
static final int BUTTON_SHAPE_OVAL = 3
 
static final int COLOR_NONE = 0x00FFFFFF
 
static final int COLOR_BLACK = 0xFF000000
 
static final int COLOR_BLUE = 0xFF0000FF
 
static final int COLOR_CYAN = 0xFF00FFFF
 
static final int COLOR_DKGRAY = 0xFF444444
 
static final int COLOR_GRAY = 0xFF888888
 
static final int COLOR_GREEN = 0xFF00FF00
 
static final int COLOR_LTGRAY = 0xFFCCCCCC
 
static final int COLOR_MAGENTA = 0xFFFF00FF
 
static final int COLOR_ORANGE = 0xFFFFC800
 
static final int COLOR_PINK = 0xFFFFAFAF
 
static final int COLOR_RED = 0xFFFF0000
 
static final int COLOR_WHITE = 0xFFFFFFFF
 
static final int COLOR_YELLOW = 0xFFFFFF00
 
static final int COLOR_DEFAULT = 0x00000000
 
static final String DEFAULT_VALUE_COLOR_NONE = "&H00FFFFFF"
 
static final String DEFAULT_VALUE_COLOR_BLACK = "&HFF000000"
 
static final String DEFAULT_VALUE_COLOR_BLUE = "&HFF0000FF"
 
static final String DEFAULT_VALUE_COLOR_CYAN = "&HFF00FFFF"
 
static final String DEFAULT_VALUE_COLOR_DKGRAY = "&HFF444444"
 
static final String DEFAULT_VALUE_COLOR_GRAY = "&HFF888888"
 
static final String DEFAULT_VALUE_COLOR_GREEN = "&HFF00FF00"
 
static final String DEFAULT_VALUE_COLOR_LTGRAY = "&HFFCCCCCC"
 
static final String DEFAULT_VALUE_COLOR_MAGENTA = "&HFFFF00FF"
 
static final String DEFAULT_VALUE_COLOR_ORANGE = "&HFFFFC800"
 
static final String DEFAULT_VALUE_COLOR_PINK = "&HFFFFAFAF"
 
static final String DEFAULT_VALUE_COLOR_RED = "&HFFFF0000"
 
static final String DEFAULT_VALUE_COLOR_WHITE = "&HFFFFFFFF"
 
static final String DEFAULT_VALUE_COLOR_YELLOW = "&HFFFFFF00"
 
static final String DEFAULT_VALUE_COLOR_DEFAULT = "&H00000000"
 
static final float FONT_DEFAULT_SIZE = 14
 
static final int LAYOUT_ORIENTATION_HORIZONTAL = ComponentConstants.LAYOUT_ORIENTATION_HORIZONTAL
 
static final int LAYOUT_ORIENTATION_VERTICAL = ComponentConstants.LAYOUT_ORIENTATION_VERTICAL
 
static final int SCALING_SCALE_PROPORTIONALLY = 0
 
static final int SCALING_SCALE_TO_FIT = 1
 
static final int TYPEFACE_DEFAULT = 0
 
static final int TYPEFACE_SANSSERIF = 1
 
static final int TYPEFACE_SERIF = 2
 
static final int TYPEFACE_MONOSPACE = 3
 
static final int LENGTH_PREFERRED = -1
 
static final int LENGTH_FILL_PARENT = -2
 
static final int LENGTH_UNKNOWN = -3
 
static final int LENGTH_PERCENT_TAG = -1000
 
static final int TOAST_LENGTH_SHORT = 0
 
static final int TOAST_LENGTH_LONG = 1
 
static final int DIRECTION_NORTH = 1
 
static final int DIRECTION_NORTHEAST = 2
 
static final int DIRECTION_EAST = 3
 
static final int DIRECTION_SOUTHEAST = 4
 
static final int DIRECTION_SOUTH = -1
 
static final int DIRECTION_SOUTHWEST = -2
 
static final int DIRECTION_WEST = -3
 
static final int DIRECTION_NORTHWEST = -4
 
static final int DIRECTION_NONE = 0
 
static final int DIRECTION_MIN = -4
 
static final int DIRECTION_MAX = 4
 
static float SLIDER_MIN_VALUE = 10
 
static float SLIDER_MAX_VALUE = 50
 
static float SLIDER_THUMB_VALUE = (SLIDER_MIN_VALUE + SLIDER_MAX_VALUE) / 2.0f
 
static final String DEFAULT_VALUE_TEXT_TO_SPEECH_COUNTRY = ""
 
static final String DEFAULT_VALUE_TEXT_TO_SPEECH_LANGUAGE = ""
 
- Protected Member Functions inherited from com.google.appinventor.components.runtime.MapFeatureContainerBase
 MapFeatureContainerBase (ComponentContainer container)
 
void processGeoJSON (final String url, final String content) throws JSONException
 
- Protected Member Functions inherited from com.google.appinventor.components.runtime.AndroidViewComponent
 AndroidViewComponent (ComponentContainer container)
 
- Protected Member Functions inherited from com.google.appinventor.components.runtime.VisibleComponent
 VisibleComponent ()
 
- Protected Attributes inherited from com.google.appinventor.components.runtime.MapFeatureContainerBase
List< MapFeaturefeatures = new CopyOnWriteArrayList<MapFeature>()
 
- Protected Attributes inherited from com.google.appinventor.components.runtime.AndroidViewComponent
final ComponentContainer container
 

Detailed Description

A FeatureCollection groups one or more map features together. Any events that occur on a feature in the collection will also trigger the corresponding event in the collection component. FeatureCollections can be loaded from external resources to populate Maps with content. GeoJSON is the only format supported at this time.

Definition at line 38 of file FeatureCollection.java.

Constructor & Destructor Documentation

◆ FeatureCollection()

com.google.appinventor.components.runtime.FeatureCollection.FeatureCollection ( MapFactory.MapFeatureContainer  container)

Definition at line 42 of file FeatureCollection.java.

Member Function Documentation

◆ FeaturesFromGeoJSON()

void com.google.appinventor.components.runtime.FeatureCollection.FeaturesFromGeoJSON ( String  geojson)

Populates the feature collection from a string containing GeoJSON content. Given the size of such strings, it is recommended to load the feature collection from assets or the web using the Source(String) property.

Parameters
geojson

Definition at line 59 of file FeatureCollection.java.

◆ getMap()

Map com.google.appinventor.components.runtime.FeatureCollection.getMap ( )

Gets the map containing the feature collection.

Returns
the feature collection's map

Implements com.google.appinventor.components.runtime.util.MapFactory.MapFeatureContainer.

Definition at line 131 of file FeatureCollection.java.

◆ getView()

View com.google.appinventor.components.runtime.FeatureCollection.getView ( )

Returns the View that is displayed in the UI.

Reimplemented from com.google.appinventor.components.runtime.AndroidViewComponent.

Definition at line 124 of file FeatureCollection.java.

◆ GotFeatures()

void com.google.appinventor.components.runtime.FeatureCollection.GotFeatures ( String  url,
YailList  features 
)

The GotFeatures event is run when when a feature collection is successfully read from the given url{:.variable.block}. The features{:.variable.block} parameter will be a list of feature descriptions that can be converted into components using the FeatureFromDescription(YailList) method.

Parameters
urlthe url corresponding to the requested url in LoadFromURL(String)
featuresthe list of feature descriptions read from the resource at
url

Reimplemented from com.google.appinventor.components.runtime.MapFeatureContainerBase.

Definition at line 80 of file FeatureCollection.java.

◆ Source() [1/2]

String com.google.appinventor.components.runtime.FeatureCollection.Source ( )

Gets the source of the feature collection.

Returns
the last asset or url from which the feature collection was successfully read.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapFeatureCollection.

Definition at line 96 of file FeatureCollection.java.

◆ Source() [2/2]

void com.google.appinventor.components.runtime.FeatureCollection.Source ( String  source)

Sets the source of the feature collection. This is a designer only property that is used to support loading feature collections in the web editor.

Parameters
sourceasset name or url from which to load the feature collection

Implements com.google.appinventor.components.runtime.util.MapFactory.MapFeatureCollection.

Definition at line 87 of file FeatureCollection.java.

◆ Visible() [1/2]

boolean com.google.appinventor.components.runtime.FeatureCollection.Visible ( )

Returns true iff the component is visible.

Returns
true iff the component is visible

Implements com.google.appinventor.components.runtime.util.MapFactory.MapFeatureCollection.

Definition at line 106 of file FeatureCollection.java.

◆ Visible() [2/2]

void com.google.appinventor.components.runtime.FeatureCollection.Visible ( boolean  visibility)

Specifies whether the type% should be visible on the screen. Value is true{:.logic.block} if the type% is showing and false{:.logic.block} if hidden.

Parameters
visibilitydesired state

Reimplemented from com.google.appinventor.components.runtime.AndroidViewComponent.

Definition at line 119 of file FeatureCollection.java.


The documentation for this class was generated from the following file: