react-native-gcprinter v1.0.1
This is a new React Native project, bootstrapped using @react-native-community/cli
.
Getting Started
Note: Make sure you have completed the React Native - Environment Setup instructions till "Creating a new application" step, before proceeding.
Step 1: Installation
npm install react-native-gcprinter --save
or
yarn add react-native-gcprinter
Step 2: Add dependenceie
- modify app/build.gradle under the android project:
implementation project(':react-native-gcprinter')
Step 3: Add 'GcPrinterPackage' to MainApplication
import com.goodcom.react.GcPrinter.GcPrinterPackage;
...
@Override
protected List<ReactPackage> getPackages() {
return Arrays.<ReactPackage>asList(
new MainReactPackage(),
new GcPrinterPackage()
);
Step 4: Import in React-Native
import GcPrinter, {FontSize, AlignmentType, BarcodeType} from 'react-native-gcprinter';
API
Constants
FontSize : font size AlignmentType : Alignment Type BarcodeType : Barcode Type | Type | Sub type | |:-----:|:-----------:| |FontSize |Default,Small,Medium,Big,DoubleHeight,DoubleWidth,SmallBold,MediumBold,BigBold,DoubleHeightBold,DoubleWidthBold | |AlignmentType |Left,Center,Right | |BarcodeType |barcodeUpca,barcodeUpce,barcodeEan8,barcodeEan13,barcodeCode128,barcodeCode39,barcodeCodeBar,barcodeItf,barcodeCode93,barcodeQrCode |
Method
Method | Parameter | Return Type |
---|---|---|
drawText | strLeft, fontLeft, strMid, fontMid, strRight, fontRight | void |
printText | isAutoFeed | void |
drawLeftRight | strLeft, fontLeft, strRight, fontRight | void |
drawCustom | string, fontSize, align | void |
drawNewLine | void | |
drawOneLine | fontSize | void |
drawOneLineDefault | void | |
drawBarcode | str, align, type | void |
drawBarcodeWithHeight | string, align, type, height | void |
drawQrCode | string, align | void |
drawQrCodeWithHeight | string,align,height | void |
isDeviceSupport | Promise<number> | |
printJson | json | void |
printImageByBase64 | base64, align, isAutoFeed | void |
printImageByArray | byteArray, align, isAutoFeed | void |
/**
* Draw text into memory, you can specify the position and font size of the printed text, and you can print the left, middle, and right text at the same line
* You can continuously use drawText to draw all the contents into memory, and finally use printText to print the contents.
*/
drawText: (strLeft, fontLeft, strMid, fontMid, strRight, fontRight) => void,
/**
* Start printing. Except for image printing, other APIs, such as drawText, just draw the printing content in the memory first, and the printing has not been started yet.
* This method is to print out the printing content in the memory.Control whether to automatically feed paper through isAutoFeed
*/
printText: (isAutoFeed) => void,
/**
* Draw text into memory, you can print left-aligned and right-aligned content at the same line. It needs to be printed using printText.
*/
drawLeftRight: (strLeft, fontLeft, strRight, fontRight) => void,
/**
* Draw text content to memory, you can specify the size and position of the content. It needs to be printed using printText.
*/
drawCustom: (string, fontSize, align) => void,
/**
* Draw a blank line, similar to a newline.
*/
drawNewLine: () => void,
/**
* Draw a horizontal line, you can specify the thickness of the horizontal line by setting the font size.
*/
drawOneLine: (fontSize) => void,
/**
* Draw a horizontal line, use the default font without specifying the font size
*/
drawOneLineDefault: () => void,
/**
* Draw barcodes, including qrcode, you can specify the alignment position and barcode type of the barcode.
*/
drawBarcode: (str, align, type) => void,
/**
* Draw barcodes, including qrcode, you can specify the alignment position and barcode type of the barcode.
* The height of the barcode can be specified. No width parameter is required, the width is determined by the specific barcode
*/
drawBarcodeWithHeight: (string, align, type, height) => void,
/**
* Draw qrcode,you can specify the alignment position of the qrcode.
*/
drawQrCode: (string, align) => void;
/**
* Draw qrcode,you can specify the alignment position of the qrcode.
* The height of the qrcode can be specified. No width parameter is required, the width is determined by the specific qrcode
*/
drawQrCodeWithHeight: (string,align,height) => void;
/**
* Check whether printing is supported. This method returns true only on goodcom printers. This method allows the app to distinguish printers from different manufacturers.
*/
isDeviceSupport: () => Promise<string>,
/**
* Print the content in json format, which will be parsed by the printer according to the template and formatted for printing
*/
printJson: (json) => void,
/**
* Printing an image using base64 encoding, the Base64 string must start with "data:image/png;base64,"
* You can set the alignment position of the printed image, and decide whether to automatically feed the paper after printing.
* If you want to print the text after printing the image, the paper will not be automatically fed.
*/
printImageByBase64: (base64, align, isAutoFeed) => void,