Release 0.0.4

Author: bondwp

.npmignore

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+Example/
+.git
+.gitignore
+.idea

README.md

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+# react-native-usb-printer
+
+A React Native Library to support USB printer for Android platform 
+
+## Installation
+
+```
+npm install react-native-usb-printer --save
+```
+
+## Integrate module
+
+To integrate `react-native-usb-printer` with the rest of your react app just execute:
+```
+react-native link react-native-usb-printer
+```
+
+## Usage
+
+```javascript
+import { RNUSBPrinter } from 'react-native-usb-printer';
+
+RNUSBPrinter.printText('This is test print.')
+RNUSBPrinter.printBillTextWithCut("<C>This is test print.</C>")
+RNUSBPrinter.printBillTextWithCut("<M>This is test print.</M>")
+RNUSBPrinter.printBillTextWithCut("<CM>This is test print.</CM>")
+
+```
+
+## Example
+
+```javascript
+
+  componentDidMount = async () => {
+    var devices = await RNUSBPrinter.getUSBDeviceList();
+    vendorID = 1155
+    productId = 22304
+    let printedSelected = await RNUSBPrinter.connectPrinter(vendorId, productId);
+    this.setState(Object.assign({}, this.state, {
+        printedSelected: printedSelected,
+        devices: devices,
+      }));
+  }
+
+  printTest = () => {
+    if(this.state.printedSelected) {
+      RNUSBPrinter.printText("<C>This is test print.</C>\n");
+    }else{
+      console.log("No printer connected")
+    }
+    
+  }
+
+  printRawDataTest = () => {
+    if(this.state.printedSelected) {
+      RNUSBPrinter.printBillTextWithCut("<C>This is test print.</C>");
+    }else{
+      console.log("No printer connected")
+    }
+  }
+
+  ...
+
+  render() {
+    return (
+      <View style={styles.container}>
+        {
+          this.state.deviceList.map(device => (
+            <Text key={device.device_id}>
+              {`device_name: ${device.device_name}, device_id: ${device.device_id}, vendor_id: ${device.vendor_id}, product_id: ${device.product_id}`}
+            </Text>
+            ))
+        }
+        <TouchableOpacity onPress={() => this.printTest()}>
+          <Text> Print Text </Text>
+        </TouchableOpacity>
+        <TouchableOpacity onPress={() => this.printRawDataTest()}>
+          <Text> Print Bill Text </Text>
+        </TouchableOpacity>
+      </View>
+    )
+  }
+  ...
+
+```

android/build.gradle

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+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 26
+    buildToolsVersion "26.0.1"
+
+    defaultConfig {
+        minSdkVersion 15
+        targetSdkVersion 26
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:21.2.1'
+    compile "com.facebook.react:react-native:+"
+    testCompile 'junit:junit:4.12'
+}

android/src/androidTest/java/com/pinmi/react/printer/ExampleInstrumentedTest.java

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+package com.pinmi.react.printer;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.pinmi.react.printer.test", appContext.getPackageName());
+    }
+}

android/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+
+    package="com.pinmi.react.printer">
+
+    <application android:allowBackup="true" android:label="@string/app_name"
+        android:supportsRtl="true">
+
+    </application>
+
+</manifest>

android/src/main/java/com/pinmi/react/printer/RNPrinterModule.java

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+package com.pinmi.react.printer;
+
+
+import android.hardware.usb.UsbDevice;
+
+import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.WritableArray;
+import com.facebook.react.bridge.WritableMap;
+import com.pinmi.react.printer.adapter.USBPrinterAdapter;
+
+import java.util.List;
+
+/**
+ * Created by bondwp322 on 2017/10/9.
+ */
+
+public class RNPrinterModule extends ReactContextBaseJavaModule {
+
+
+    private USBPrinterAdapter adapter;
+    public  RNPrinterModule(ReactApplicationContext reactContext){
+        super(reactContext);
+        this.adapter = USBPrinterAdapter.getInstance();
+        this.adapter.init(reactContext);
+    }
+
+    @Override
+    public String getName() {
+        return "RNPrinter";
+    }
+
+
+    @ReactMethod
+    public void getUSBDeviceList(Promise promise) {
+        List<UsbDevice> usbDevices = adapter.getDeviceList();
+        WritableArray pairedDeviceList = Arguments.createArray();
+        for (UsbDevice usbDevice : usbDevices) {
+            WritableMap deviceMap = Arguments.createMap();
+            deviceMap.putString("device_name", usbDevice.getDeviceName());
+            deviceMap.putInt("device_id", usbDevice.getDeviceId());
+            deviceMap.putInt("vendor_id", usbDevice.getVendorId());
+            deviceMap.putInt("product_id", usbDevice.getProductId());
+            pairedDeviceList.pushMap(deviceMap);
+        }
+        promise.resolve(pairedDeviceList);
+    }
+
+
+    @ReactMethod
+    public void connectPrinter(Integer vendorId, Integer productId, Promise promise) {
+        if(!adapter.selectDevice(vendorId, productId)){
+            promise.resolve(false);
+        }else{
+            promise.resolve(true);
+        }
+    }
+
+
+    @ReactMethod
+    public void closeConn(Promise promise) {
+        adapter.closeConnectionIfExists();
+        promise.resolve(null);
+    }
+
+
+
+
+    @ReactMethod
+    public void printText(String text) {
+        adapter.printText(text);
+    }
+
+    @ReactMethod
+    public void printRawData(String base64Data) {
+        adapter.printRawData(base64Data);
+    }
+
+}
+

android/src/main/java/com/pinmi/react/printer/RNPrinterPackage.java

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+package com.pinmi.react.printer;
+
+import com.facebook.react.ReactPackage;
+import com.facebook.react.bridge.NativeModule;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.uimanager.ViewManager;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Created by bondwp322 on 2017/10/9.
+ */
+
+public class RNPrinterPackage implements ReactPackage {
+    @Override
+    public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
+        return Arrays.asList(new NativeModule[]{
+                new RNPrinterModule(reactContext)
+        });
+    }
+
+    @Override
+    public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
+        return Collections.emptyList();
+    }
+}