AI2 Component  (Version nb184)
Public Member Functions | Protected Attributes | List of all members
com.google.appinventor.components.runtime.NearField Class Reference
Inheritance diagram for com.google.appinventor.components.runtime.NearField:
com.google.appinventor.components.runtime.AndroidNonvisibleComponent com.google.appinventor.components.runtime.OnStopListener com.google.appinventor.components.runtime.OnResumeListener com.google.appinventor.components.runtime.OnPauseListener com.google.appinventor.components.runtime.OnNewIntentListener com.google.appinventor.components.runtime.Deleteable com.google.appinventor.components.runtime.Component

Public Member Functions

 NearField (ComponentContainer container)
 
void TagRead (String message)
 
void TagWritten ()
 
String LastMessage ()
 
boolean ReadMode ()
 
String TextToWrite ()
 
int WriteType ()
 
void ReadMode (boolean newMode)
 
void TextToWrite (String newText)
 
void onNewIntent (Intent intent)
 
void onResume ()
 
void onPause ()
 
void onDelete ()
 
void onStop ()
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.AndroidNonvisibleComponent
HandlesEventDispatching getDispatchDelegate ()
 

Protected Attributes

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

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)
 

Detailed Description

Non-visible component to provide NFC capabilities. For now this component supports the reading and writing of text tags only (if supported by the device).

In order to read and write text tags, the component must have its ReadMode(boolean) property set to true{:.logic.block} or false{:.logic.block} respectively.

Note: This component will only work on Screen1 of any App Inventor app.

Definition at line 49 of file NearField.java.

Constructor & Destructor Documentation

◆ NearField()

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

Creates a new NearField component

Parameters
containerignored (because this is a non-visible component)

Definition at line 68 of file NearField.java.

Member Function Documentation

◆ LastMessage()

String com.google.appinventor.components.runtime.NearField.LastMessage ( )

Returns the content of the most recently received tag.

Definition at line 114 of file NearField.java.

◆ onDelete()

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

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

Definition at line 215 of file NearField.java.

◆ onNewIntent()

void com.google.appinventor.components.runtime.NearField.onNewIntent ( Intent  intent)

Implements com.google.appinventor.components.runtime.OnNewIntentListener.

Definition at line 183 of file NearField.java.

◆ onPause()

void com.google.appinventor.components.runtime.NearField.onPause ( )

Implements com.google.appinventor.components.runtime.OnPauseListener.

Definition at line 206 of file NearField.java.

◆ onResume()

void com.google.appinventor.components.runtime.NearField.onResume ( )

Implements com.google.appinventor.components.runtime.OnResumeListener.

Definition at line 190 of file NearField.java.

◆ onStop()

void com.google.appinventor.components.runtime.NearField.onStop ( )

Implements com.google.appinventor.components.runtime.OnStopListener.

Definition at line 222 of file NearField.java.

◆ ReadMode() [1/2]

boolean com.google.appinventor.components.runtime.NearField.ReadMode ( )

Returns true if in read mode, false if in write mode.

Definition at line 126 of file NearField.java.

◆ ReadMode() [2/2]

void com.google.appinventor.components.runtime.NearField.ReadMode ( boolean  newMode)

Specifies whether the NFC hardware should operate in read mode (true{:.logic.block}) or write mode (false{:.logic.block}).

Definition at line 155 of file NearField.java.

◆ TagRead()

void com.google.appinventor.components.runtime.NearField.TagRead ( String  message)

Indicates that a new tag has been detected. Currently this is only a plain text tag, as specified in the manifest. @internaldoc See Compiler.java.

Definition at line 93 of file NearField.java.

◆ TagWritten()

void com.google.appinventor.components.runtime.NearField.TagWritten ( )

Indicates that a tag has come into range of the NFC sensor and has been written.

Definition at line 103 of file NearField.java.

◆ TextToWrite() [1/2]

String com.google.appinventor.components.runtime.NearField.TextToWrite ( )

Returns the content of the text that's going to be written to the tag.

Definition at line 135 of file NearField.java.

◆ TextToWrite() [2/2]

void com.google.appinventor.components.runtime.NearField.TextToWrite ( String  newText)

Specifies the content that will be written to the tag when in write mode. This method has no effect if ReadMode() is true{:.logic.block}.

Definition at line 170 of file NearField.java.

◆ WriteType()

int com.google.appinventor.components.runtime.NearField.WriteType ( )

Returns the write type for the NFC component. For this version of the component, it is always 1.

Definition at line 145 of file NearField.java.

Member Data Documentation

◆ requestCode

int com.google.appinventor.components.runtime.NearField.requestCode
protected

Definition at line 62 of file NearField.java.

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