Inheritance diagram for com.google.appinventor.components.runtime.TinyWebDB:

Public Member Functions
	TinyWebDB (ComponentContainer container)

String	ServiceURL ()

void	ServiceURL (String url)

void	StoreValue (final String tag, final Object valueToStore)

void	ValueStored ()

void	GetValue (final String tag)

void	GotValue (String tagFromWebDB, Object valueFromWebDB)

void	WebServiceError (String message)

Public Member Functions inherited from com.google.appinventor.components.runtime.AndroidNonvisibleComponent
HandlesEventDispatching	getDispatchDelegate ()

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.AndroidNonvisibleComponent
	AndroidNonvisibleComponent (Form form)

Protected Attributes inherited from com.google.appinventor.components.runtime.AndroidNonvisibleComponent
final Form	form

Detailed Description

The

TinyWebDB

component communicates with a Web service to store and retrieve information. Although this component is usable, it is very limited and meant primarily as a demonstration for people who would like to create their own components that talk to the Web. The accompanying Web service is at (http://tinywebdb.appinventor.mit.edu). The component has methods to store a value under a tag and to retrieve the value associated with the tag. The interpretation of what "store" and "retrieve" means is up to the Web service. In this implementation, all tags and values are strings (text). This restriction may be relaxed in future versions.

Author: halab.nosp@m.elso.nosp@m.n@goo.nosp@m.gle..nosp@m.com (Hal Abelson)

Definition at line 71 of file TinyWebDB.java.

Constructor & Destructor Documentation

◆ TinyWebDB()

com.google.appinventor.components.runtime.TinyWebDB.TinyWebDB ( ComponentContainer container )

Creates a new TinyWebDB component.

Parameters

container the Form that this component is contained in.

Definition at line 87 of file TinyWebDB.java.

Member Function Documentation

◆ GetValue()

void com.google.appinventor.components.runtime.TinyWebDB.GetValue ( final String tag )

GetValue asks the Web service to get the value stored under the given tag{:.text.block}. It is up to the Web service what to return if there is no value stored under the tag{:.text.block}. This component just accepts whatever is returned. The GotValue(String, Object) event will be run on completion.

Parameters

tag	The tag whose value is to be retrieved.

Definition at line 266 of file TinyWebDB.java.

◆ GotValue()

void com.google.appinventor.components.runtime.TinyWebDB.GotValue	(	String	tagFromWebDB,
		Object	valueFromWebDB
	)

Indicates that a GetValue(String) server request has succeeded.

Parameters

valueFromWebDB the value that was returned. Can be any type of value (e.g. number, text, boolean or list).

Definition at line 343 of file TinyWebDB.java.

◆ ServiceURL() [1/2]

String com.google.appinventor.components.runtime.TinyWebDB.ServiceURL ( )

The URL to the database with which the component should communicate.

Definition at line 119 of file TinyWebDB.java.

◆ ServiceURL() [2/2]

void com.google.appinventor.components.runtime.TinyWebDB.ServiceURL ( String url )

Specifies the URL of the Web service. The default value is the demo service running on App Engine.

Definition at line 130 of file TinyWebDB.java.

◆ StoreValue()

void com.google.appinventor.components.runtime.TinyWebDB.StoreValue	(	final String	tag,
		final Object	valueToStore
	)

Sends a request to the Web service to store the given valueToStore{:.variable.block} under the given tag{:.text.block}. The ValueStored() event will be run on completion.

Parameters

tag	The tag to use
valueToStore	The value to store. Can be any type of value (e.g. number, text, boolean or list).

Definition at line 156 of file TinyWebDB.java.

◆ ValueStored()

void com.google.appinventor.components.runtime.TinyWebDB.ValueStored ( )

Event indicating that a StoreValue(String, Object) server request has succeeded.

Definition at line 234 of file TinyWebDB.java.

◆ WebServiceError()

void com.google.appinventor.components.runtime.TinyWebDB.WebServiceError ( String message )

Indicates that the communication with the Web service signaled an error.

Parameters

message the error message

Definition at line 354 of file TinyWebDB.java.

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

C:/Users/Ulli/appinventor-sources/appinventor/components/src/com/google/appinventor/components/runtime/TinyWebDB.java

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ TinyWebDB()

Member Function Documentation

◆ GetValue()

◆ GotValue()

◆ ServiceURL() [1/2]

◆ ServiceURL() [2/2]

◆ StoreValue()

◆ ValueStored()

◆ WebServiceError()