PrintHelper

Kotlin |Java

class PrintHelper

kotlin.Any
↳	androidx.print.PrintHelper

Helper for printing bitmaps.

Summary

Nested classes
abstract	OnPrintFinishCallback Callback for observing when a print operation is completed.

Constants
static Int	COLOR_MODE_COLOR this is a color image (default)
static Int	COLOR_MODE_MONOCHROME this is a black and white image
static Int	ORIENTATION_LANDSCAPE Print the image in landscape orientation (default).
static Int	ORIENTATION_PORTRAIT Print the image in portrait orientation.
static Int	SCALE_MODE_FILL image will fill the paper and be cropped (default)
static Int	SCALE_MODE_FIT image will be scaled but leave white space

Public constructors
<init>(@NonNull context: Context) Constructs the PrintHelper that can be used to print images.

Public methods
Int	getColorMode() Gets the color mode with which the image will be printed.
Int	getOrientation() Gets whether the image will be printed in landscape or portrait.
Int	getScaleMode() Returns the scale mode with which the image will fill the paper.
Unit	printBitmap(@NonNull jobName: String, @NonNull bitmap: Bitmap) Prints a bitmap.
Unit	printBitmap(@NonNull jobName: String, @NonNull bitmap: Bitmap, @Nullable callback: PrintHelper.OnPrintFinishCallback?) Prints a bitmap.
Unit	printBitmap(@NonNull jobName: String, @NonNull imageFile: Uri) Prints an image located at the Uri.
Unit	printBitmap(@NonNull jobName: String, @NonNull imageFile: Uri, @Nullable callback: PrintHelper.OnPrintFinishCallback?) Prints an image located at the Uri.
Unit	setColorMode(colorMode: Int) Sets whether the image will be printed in color (default) COLOR_MODE_COLOR or in back and white COLOR_MODE_MONOCHROME.
Unit	setOrientation(orientation: Int) Sets whether the image will be printed in landscape ORIENTATION_LANDSCAPE (default) or portrait ORIENTATION_PORTRAIT.
Unit	setScaleMode(scaleMode: Int) Selects whether the image will fill the paper and be cropped SCALE_MODE_FIT or whether the image will be scaled but leave white space SCALE_MODE_FILL.
static Boolean	systemSupportsPrint() Gets whether the system supports printing.

Constants

COLOR_MODE_COLOR

static val COLOR_MODE_COLOR: Int

this is a color image (default)

Value: PrintAttributes.COLOR_MODE_COLOR

COLOR_MODE_MONOCHROME

static val COLOR_MODE_MONOCHROME: Int

this is a black and white image

Value: PrintAttributes.COLOR_MODE_MONOCHROME

ORIENTATION_LANDSCAPE

static val ORIENTATION_LANDSCAPE: Int

Print the image in landscape orientation (default).

Value: 1

ORIENTATION_PORTRAIT

static val ORIENTATION_PORTRAIT: Int

Print the image in portrait orientation.

Value: 2

SCALE_MODE_FILL

static val SCALE_MODE_FILL: Int

image will fill the paper and be cropped (default)

Value: 2

SCALE_MODE_FIT

static val SCALE_MODE_FIT: Int

image will be scaled but leave white space

Value: 1

Public constructors

<init>

PrintHelper(@NonNull context: Context)

Constructs the PrintHelper that can be used to print images.

Parameters
context	Context: A context for accessing system resources.

Public methods

getColorMode

fun getColorMode(): Int

Gets the color mode with which the image will be printed.

Return
Int	The color mode which is one of COLOR_MODE_COLOR and COLOR_MODE_MONOCHROME.

getOrientation

fun getOrientation(): Int

Gets whether the image will be printed in landscape or portrait.

Return
Int	The page orientation which is one of ORIENTATION_LANDSCAPE or ORIENTATION_PORTRAIT.

getScaleMode

fun getScaleMode(): Int

Returns the scale mode with which the image will fill the paper.

Return
Int	The scale Mode: SCALE_MODE_FIT or SCALE_MODE_FILL

printBitmap

fun printBitmap(
    @NonNull jobName: String, 
    @NonNull bitmap: Bitmap
): Unit

Prints a bitmap.

Parameters
jobName	String: The print job name.
bitmap	Bitmap: The bitmap to print.

printBitmap

fun printBitmap(
    @NonNull jobName: String, 
    @NonNull bitmap: Bitmap, 
    @Nullable callback: PrintHelper.OnPrintFinishCallback?
): Unit

Prints a bitmap.

Parameters
jobName	String: The print job name.
bitmap	Bitmap: The bitmap to print.
callback	PrintHelper.OnPrintFinishCallback?: Optional callback to observe when printing is finished.

printBitmap

fun printBitmap(
    @NonNull jobName: String, 
    @NonNull imageFile: Uri
): Unit

Prints an image located at the Uri. Image types supported are those of android.graphics.BitmapFactory.decodeStream(java.io.InputStream)

Parameters
jobName	String: The print job name.
imageFile	Uri: The Uri pointing to an image to print.

Exceptions
FileNotFoundException	if Uri is not pointing to a valid image.

printBitmap

fun printBitmap(
    @NonNull jobName: String, 
    @NonNull imageFile: Uri, 
    @Nullable callback: PrintHelper.OnPrintFinishCallback?
): Unit

Prints an image located at the Uri. Image types supported are those of android.graphics.BitmapFactory.decodeStream(java.io.InputStream)

Parameters
jobName	String: The print job name.
imageFile	Uri: The Uri pointing to an image to print.
callback	PrintHelper.OnPrintFinishCallback?: Optional callback to observe when printing is finished.

Exceptions
FileNotFoundException	if Uri is not pointing to a valid image.

setColorMode

fun setColorMode(colorMode: Int): Unit

Sets whether the image will be printed in color (default) COLOR_MODE_COLOR or in back and white COLOR_MODE_MONOCHROME.

Parameters
colorMode	Int: The color mode which is one of COLOR_MODE_COLOR and COLOR_MODE_MONOCHROME.

setOrientation

fun setOrientation(orientation: Int): Unit

Sets whether the image will be printed in landscape ORIENTATION_LANDSCAPE (default) or portrait ORIENTATION_PORTRAIT.

Parameters
orientation	Int: The page orientation which is one of ORIENTATION_LANDSCAPE or ORIENTATION_PORTRAIT.

setScaleMode

fun setScaleMode(scaleMode: Int): Unit

Selects whether the image will fill the paper and be cropped SCALE_MODE_FIT or whether the image will be scaled but leave white space SCALE_MODE_FILL.

Parameters
scaleMode	Int: SCALE_MODE_FIT or SCALE_MODE_FILL

systemSupportsPrint

static fun systemSupportsPrint(): Boolean

Gets whether the system supports printing.

Return
Boolean	True if printing is supported.