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

``bash
npm install react-native-ezprinter --save
`

or

`bash
yarn add react-native-ezprinter
`

Step 2: Add dependenceie

* modify app/build.gradle under the android project：

`javascript
implementation project(':react-native-ezprinter')
`

Step 3: Add 'EzPrinterPackage' to MainApplication

`java
import com.goodcom.react.EzPrinter.EzPrinterPackage;
...

@Override
protected List getPackages() {
return Arrays.asList(
new MainReactPackage(),
new EzPrinterPackage()
);
`

Step 4: Import in React-Native

`javascript
import EzPrinter, {FontSize, AlignmentType, BarcodeType} from 'react-native-ezprinter';
`

API

$3

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 |

$3

| 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 |
| printJson |json | void |
| printImageByBase64 |base64, align, isAutoFeed | void |
| printImageByArray |byteArray, align, isAutoFeed | void |

`javascript

/**
* 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,
/**
* 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,
``