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

Public Member Functions
	TinyDB (ComponentContainer container)

void	Namespace (String namespace)

String	Namespace ()

void	StoreValue (final String tag, final Object valueToStore)

Object	GetValue (final String tag, final Object valueIfTagNotThere)

Object	GetTags ()

void	ClearAll ()

void	ClearTag (final String tag)

void	onDelete ()

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

Static Public Attributes
static final String	DEFAULT_NAMESPACE ="TinyDB1"

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 = ""

Additional Inherited Members
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

TinyDB is a non-visible component that stores data for an app.

Apps created with App Inventor are initialized each time they run. This means that if an app sets the value of a variable and the user then quits the app, the value of that variable will not be remembered the next time the app is run. In contrast, TinyDB is a persistent data store for the app. The data stored in a TinyDB will be available each time the app is run. An example might be a game that saves the high score and retrieves it each time the game is played.

Data items consist of tags and values. To store a data item, you specify the tag it should be stored under. The tag must be a text block, giving the data a name. Subsequently, you can retrieve the data that was stored under a given tag.

You cannot use the TinyDB to pass data between two different apps on the phone, although you can use the TinyDB to share data between the different screens of a multi-screen app.

When you are developing apps using the AI Companion, all the apps using that Companion will share the same TinyDB. That sharing will disappear once the apps are packaged and installed on the phone. During development you should be careful to clear the Companion app's data each time you start working on a new app.

Author: markf.nosp@m.@goo.nosp@m.gle.c.nosp@m.om (Mark Friedman)

Definition at line 80 of file TinyDB.java.

Constructor & Destructor Documentation

◆ TinyDB()

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

Creates a new TinyDB component.

Parameters

container the Form that this component is contained in.

Definition at line 95 of file TinyDB.java.

Member Function Documentation

◆ ClearAll()

void com.google.appinventor.components.runtime.TinyDB.ClearAll ( )

Clear the entire data store.

Definition at line 186 of file TinyDB.java.

◆ ClearTag()

void com.google.appinventor.components.runtime.TinyDB.ClearTag ( final String tag )

Clear the entry with the given tag{:.text.block}.

Parameters

tag	The tag to remove.

Definition at line 198 of file TinyDB.java.

◆ GetTags()

Object com.google.appinventor.components.runtime.TinyDB.GetTags ( )

Return a list of all the tags in the data store.

Returns: a list of all keys.

Definition at line 172 of file TinyDB.java.

◆ GetValue()

Object com.google.appinventor.components.runtime.TinyDB.GetValue	(	final String	tag,
		final Object	valueIfTagNotThere
	)

Retrieve the value stored under the given tag{:.text.block}. If there's no such tag, then return valueIfTagNotThere{:.variable.block}.

Parameters

tag	The tag to use
valueIfTagNotThere	The value returned if tag in not in TinyDB

Returns: The value stored under the tag. Can be any type of value (e.g. number, text, boolean or list).

Definition at line 155 of file TinyDB.java.

◆ Namespace() [1/2]

String com.google.appinventor.components.runtime.TinyDB.Namespace ( )

Definition at line 120 of file TinyDB.java.

◆ Namespace() [2/2]

void com.google.appinventor.components.runtime.TinyDB.Namespace ( String namespace )

Namespace for storing data. All TinyDB components in the same app with the same Namespace property access the same data.

Each Namespace represents a single data store that is shared by the entire app. If you have multiple TinyDB components with the same Namespace within an app, they use the same data store, even if they are on different screens. If you only need one data store for your app, it's not necessary to set a Namespace.

Parameters

namespace the alternate namespace to use for the TinyDB

Definition at line 114 of file TinyDB.java.

◆ onDelete()

void com.google.appinventor.components.runtime.TinyDB.onDelete ( )

Implements com.google.appinventor.components.runtime.Deleteable.

Definition at line 205 of file TinyDB.java.

◆ StoreValue()

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

Store the given valueToStore{:.variable.block} under the given tag{:.text.block}. The storage persists on the phone when the app is restarted.

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 134 of file TinyDB.java.

Member Data Documentation

◆ DEFAULT_NAMESPACE

final String com.google.appinventor.components.runtime.TinyDB.DEFAULT_NAMESPACE ="TinyDB1"

static

Definition at line 82 of file TinyDB.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/TinyDB.java

Public Member Functions

Static Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ TinyDB()

Member Function Documentation

◆ ClearAll()

◆ ClearTag()

◆ GetTags()

◆ GetValue()

◆ Namespace() [1/2]

◆ Namespace() [2/2]

◆ onDelete()

◆ StoreValue()

Member Data Documentation

◆ DEFAULT_NAMESPACE