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

Public Member Functions
	BarcodeScanner (ComponentContainer container)

String	Result ()

void	DoScan ()

void	resultReturned (int requestCode, int resultCode, Intent data)

void	AfterScan (String result)

boolean	UseExternalScanner ()

void	UseExternalScanner (boolean useExternalScanner)

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

Component for scanning a QR code and getting back the resulting string.

Author: sharo.nosp@m.n@go.nosp@m.ogle..nosp@m.com (Sharon Perl)

Definition at line 53 of file BarcodeScanner.java.

Constructor & Destructor Documentation

◆ BarcodeScanner()

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

Creates a Bar Code scanning component.

Parameters

container container, component will be placed in

Definition at line 73 of file BarcodeScanner.java.

Member Function Documentation

◆ AfterScan()

void com.google.appinventor.components.runtime.BarcodeScanner.AfterScan ( String result )

Indicates that the scanner has read a (text) result and provides the result

Definition at line 145 of file BarcodeScanner.java.

◆ DoScan()

void com.google.appinventor.components.runtime.BarcodeScanner.DoScan ( )

Begins a barcode scan, using the camera. When the scan is complete, the AfterScan event will be raised.

Definition at line 93 of file BarcodeScanner.java.

◆ Result()

String com.google.appinventor.components.runtime.BarcodeScanner.Result ( )

Gets the text result of the previous scan.

Definition at line 83 of file BarcodeScanner.java.

◆ resultReturned()

void com.google.appinventor.components.runtime.BarcodeScanner.resultReturned	(	int	requestCode,
		int	resultCode,
		Intent	data
	)

The callback method used to report Activity results back to the caller.

Parameters

requestCode	the originally passed in request code. Used to identify the call.
resultCode	the returned result code: android.app.Activity#RESULT_OK or android.app.Activity#RESULT_CANCELED
data	the returned data, encapsulated as an Intent.

Implements com.google.appinventor.components.runtime.ActivityResultListener.

Definition at line 130 of file BarcodeScanner.java.

◆ UseExternalScanner() [1/2]

boolean com.google.appinventor.components.runtime.BarcodeScanner.UseExternalScanner ( )

Gets whether or not you want to use an external scanning program to scan barcodes.

Returns: 'true' or 'false' depending on whether or not you want to use an external scanning program.

Definition at line 160 of file BarcodeScanner.java.

◆ UseExternalScanner() [2/2]

void com.google.appinventor.components.runtime.BarcodeScanner.UseExternalScanner ( boolean useExternalScanner )

Set whether or not you wish to use an External Scanning program such as Bar Code Scanner. If false a version of ZXing integrated into App Inventor will be used.

Parameters

useExternalScanner Set true to use an external scanning program, false to use internal copy of ZXing.

Definition at line 175 of file BarcodeScanner.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/BarcodeScanner.java

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ BarcodeScanner()

Member Function Documentation

◆ AfterScan()

◆ DoScan()

◆ Result()

◆ resultReturned()

◆ UseExternalScanner() [1/2]

◆ UseExternalScanner() [2/2]