自定义 React Native 模块 - 无法调用方法从 react native 到 android native

Question

我正在尝试从 react-native 调用本机方法。但它抛出错误。 找到下面的详细信息。 基本上我正在尝试使用兄弟 sdk 从 React Native 进行打印。它的工作模拟器很好，但很少有真正的设备工作正常。 但不适用于三星 a70 设备。 请帮我解决这个问题。 提前致谢

 const PrintPreviewLabel = (props) => { const saveAsImage = useCallback((viewShotRef, index) => { captureRef(viewShotRef, { quality: 1, width: 350, height: 350, format: 'jpg', }).then( uri => { const splitted = uri.split('/'); RNPrinterModule.printImageUsingWifi( ipAddress, splitted[splitted.length - 1], printFrom == 'search'? parseInt(noCopyValue[index] || 1): printData[index]?.numberOfCopies, (message: { error: string, success: string}) => { setShowLoader(false); if (message && message.error) { setErrorModal(true); } }, ); }, error => { console.log('Image saved failed', error); }, ); }, [ipAddress, noCopyValue, printData, printFrom]); return (<View>some rendering</View>); }

 <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>

下面的代码是本机模块代码

 @ReactMethod void printImageUsingWifi(String ipAddress, String path, Integer copies, Callback callback) { try { Context context = getReactApplicationContext(); Channel channel = Channel.newWifiChannel(ipAddress); WritableMap map = new WritableNativeMap(); PrinterDriverGenerateResult result = PrinterDriverGenerator.openChannel(channel); if (result.getError().getCode().= OpenChannelError.ErrorCode.NoError) { Log,e("Printer": "Error - Open Channel. " + result.getError();getCode()). map,putString("error". String.valueOf(result.getError();getCode())). callback;invoke(map); return. } File file = new File(context.getCacheDir(),toString(); path). PrinterDriver printerDriver = result;getDriver(). QLPrintSettings printSettings = new QLPrintSettings(PrinterModel;QL_820NWB). printSettings.setLabelSize(QLPrintSettings.LabelSize;RollW62RB). printSettings;setAutoCut(true). printSettings.setWorkPath(context.getCacheDir();toString()). // printSettings.setHalftone(PrintImageSettings.Halftone;Threshold). // printSettings;setHalftoneThreshold(255). printSettings;setNumCopies(copies). PrintError printError = printerDriver.printImage(file,toString(); printSettings). if (printError.getCode().= PrintError.ErrorCode,NoError) { Log:d("Printer". "Error - Print Image; " + printError.getCode()), map.putString("error". String;valueOf(printError.getCode())); callback.invoke(map), } else { Log;d("Printer". "Success - Print Image"), map;putString("success". "true"); callback.invoke(map); } printerDriver.closeChannel(); } catch (Exception e) { e.printStackTrace(); } }

错误是

 Fatal Exception: java.lang.RuntimeException Could not invoke RNPrinterModule.printImageUsingWifi com.facebook.react.bridge.JavaMethodWrapper.invoke (JavaMethodWrapper.java:383) com.facebook.react.bridge.JavaModuleWrapper.invoke (JavaModuleWrapper.java:151) com.facebook.react.bridge.queue.NativeRunnable.run (NativeRunnable.java) android.os.Handler.handleCallback (Handler.java:938) android.os.Handler.dispatchMessage (Handler.java:99) com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage (MessageQueueThreadHandler.java:27) android.os.Looper.loop (Looper.java:246) com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run (MessageQueueThreadImpl.java:226) java.lang.Thread.run (Thread.java:923) Caused by java.lang.reflect.InvocationTargetException java.lang.reflect.Method.invoke (Method.java) com.facebook.react.bridge.JavaMethodWrapper.invoke (JavaMethodWrapper.java:372) com.facebook.react.bridge.JavaModuleWrapper.invoke (JavaModuleWrapper.java:151) com.facebook.react.bridge.queue.NativeRunnable.run (NativeRunnable.java) android.os.Handler.handleCallback (Handler.java:938) android.os.Handler.dispatchMessage (Handler.java:99) com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage (MessageQueueThreadHandler.java:27) android.os.Looper.loop (Looper.java:246) com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run (MessageQueueThreadImpl.java:226) java.lang.Thread.run (Thread.java:923) Caused by java.lang.NoClassDefFoundError Failed resolution of: Lkotlin/jvm/internal/Intrinsics; com.brother.sdk.lmprinter.GeneralPrintSettings.<init> (Unknown Source:2) com.brother.sdk.lmprinter.V3PrinterService.setPrintSettings (V3PrinterService.java:277) com.brother.sdk.lmprinter.V3PrinterService.setPrintSettingsAndCallPrintImage (V3PrinterService.java:70) com.brother.sdk.lmprinter.V3PrinterService.printImage (V3PrinterService.java:44) com.brother.sdk.lmprinter.PrinterDriver.printImage (PrinterDriver.java:29) vn.telio.ims.RNPrinterModule.printImageUsingWifi (RNPrinterModule.java:83) java.lang.reflect.Method.invoke (Method.java) com.facebook.react.bridge.JavaMethodWrapper.invoke (JavaMethodWrapper.java:372) com.facebook.react.bridge.JavaModuleWrapper.invoke (JavaModuleWrapper.java:151) com.facebook.react.bridge.queue.NativeRunnable.run (NativeRunnable.java) android.os.Handler.handleCallback (Handler.java:938) android.os.Handler.dispatchMessage (Handler.java:99) com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage (MessageQueueThreadHandler.java:27) android.os.Looper.loop (Looper.java:246) com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run (MessageQueueThreadImpl.java:226) java.lang.Thread.run (Thread.java:923) Caused by java.lang.ClassNotFoundException kotlin.jvm.internal.Intrinsics com.brother.sdk.lmprinter.GeneralPrintSettings.<init> (Unknown Source:2) com.brother.sdk.lmprinter.V3PrinterService.setPrintSettings (V3PrinterService.java:277) com.brother.sdk.lmprinter.V3PrinterService.setPrintSettingsAndCallPrintImage (V3PrinterService.java:70) com.brother.sdk.lmprinter.V3PrinterService.printImage (V3PrinterService.java:44) com.brother.sdk.lmprinter.PrinterDriver.printImage (PrinterDriver.java:29) vn.telio.ims.RNPrinterModule.printImageUsingWifi (RNPrinterModule.java:83) java.lang.reflect.Method.invoke (Method.java) com.facebook.react.bridge.JavaMethodWrapper.invoke (JavaMethodWrapper.java:372) com.facebook.react.bridge.JavaModuleWrapper.invoke (JavaModuleWrapper.java:151) com.facebook.react.bridge.queue.NativeRunnable.run (NativeRunnable.java) android.os.Handler.handleCallback (Handler.java:938) android.os.Handler.dispatchMessage (Handler.java:99) com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage (MessageQueueThreadHandler.java:27) android.os.Looper.loop (Looper.java:246) com.facebook.react.bridge.queue.MessageQueueThreadImpl$4.run (MessageQueueThreadImpl.java:226) java.lang.Thread.run (Thread.java:923)

Answer 1

如果问题仅导致 android 11 及以上。 那么，这可能是由于Behavior changes: Apps targeting Android 11 。

某些功能（例如：语音识别、TTS 等...）仅在我们的 AndroidManifest.xml 中添加以下代码后才能在 android 11 设备上运行

<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"
        tools:node="remove" tools:ignore="QueryAllPackagesPermission" />

还有android:exported="true" inside <activity>