无法将 android 第三方扫描仪库加载到我的本机应用程序中 [英] unable to load an android third party scanner library into my react native app

查看：54 发布时间：2021/7/4 19:50:12 android react-native

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问题描述

我需要将条码扫描器的 SDK 集成到我的 react-native 应用程序中，但我不断收到错误消息:

I need to integrate the SDK of a barcode scanner into my react-native app but I keep getting an error:

Couldn't load XXX from loader dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.mobile-1.apk"],nativeLibraryDirectories=[/data/aoo-lib/com.mobile-1, /system/lib]]]: findLibrary returned null

我做了什么:

我下载了 SDK 的 .jar 文件并放入了 app/libs

我在build.gradle中添加了这一行来获取SDK的路径

I added this line in the build.gradle to get the path of the SDK

dependencies {
  ...
  implementation fileTree(include: ['*.jar'], dir: 'libs')
}

我创建了 native 模块 以便能够加载 SDK

I created the native module to be able to load the SDK

这是我在 CodeBarre.java 中的原生模块代码:

Here is my native module code in CodeBarre.java:

package com.myApp;


import com.facebook.react.bridge.NativeModule;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import com.facebook.react.bridge.Callback;


import java.util.Map;
import java.util.HashMap;
import android.util.Log;

import com.zebra.adc.decoder.BarCodeReader; // that's the scanner SDK

public class CodeBarre extends ReactContextBaseJavaModule {

public CodeBarre(ReactApplicationContext reactContext) {
  super(reactContext);

}

private static final String TAG = "BarcodeSdkDemo";


@Override
public String getName() {
  return "CodeBarre";
}

// here's how i'm trying to load the SDK
@ReactMethod
public void initScanner(Callback cb) {
  try {
      System.loadLibrary("IAL");
      System.loadLibrary("SDL");
      System.loadLibrary("barcodereader44"); // Android 4.4
      Log.i(TAG, "Barcode scanner drivers loaded");
      cb.invoke("Barcode scanner drivers loaded");
  } catch (Exception e) {
      Log.e(TAG, "error static initialization  block", e);
      cb.invoke(e.toString(), null);
  }
 }
}

这是 react-native 方面:

  ...
  componentDidMount() {
    // Access the function created in the java module
    NativeModules.CodeBarre.initScanner((err ,name) => {
      console.log(err, name);
    });
  }

这是我得到的错误:

Here is the error that I'm getting:

这是我放在/app/libs 中的 .jar 文件:

Here's the .jar file that I put in /app/libs:

应用文件夹中的build.gradle:

apply plugin: "com.android.application"

import com.android.build.OutputFile

project.ext.react = [
  entryFile: "index.js"
]

apply from: "../../node_modules/react-native/react.gradle"

android {
  compileSdkVersion rootProject.ext.compileSdkVersion
  buildToolsVersion rootProject.ext.buildToolsVersion

  defaultConfig {
     applicationId "com.mobile"
     minSdkVersion rootProject.ext.minSdkVersion
     targetSdkVersion rootProject.ext.targetSdkVersion
     versionCode 4
     versionName "0.1"
  }

  signingConfigs {
    release {
      if (project.hasProperty('MYAPP_RELEASE_STORE_FILE')) {
          storeFile file(MYAPP_RELEASE_STORE_FILE)
          storePassword MYAPP_RELEASE_STORE_PASSWORD
          keyAlias MYAPP_RELEASE_KEY_ALIAS
          keyPassword MYAPP_RELEASE_KEY_PASSWORD
         }
      }
     }
     splits {
      abi {
       reset()
       enable enableSeparateBuildPerCPUArchitecture
       universalApk false  // If true, also generate a universal APK
       include "armeabi-v7a", "x86", "arm64-v8a"
     }
    }

    buildTypes {
      release {
         minifyEnabled enableProguardInReleaseBuilds
         proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
         signingConfig signingConfigs.release
       }
      }
      // applicationVariants are e.g. debug, release
         applicationVariants.all { variant ->
         variant.outputs.each { output ->
      // For each separate APK per architecture, set a unique version code as described here:
      // http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
      def versionCodes = ["armeabi-v7a":1, "x86":2, "arm64-v8a": 3]
      def abi = output.getFilter(OutputFile.ABI)
      if (abi != null) {  // null for the universal-debug, universal-release variants
          output.versionCodeOverride =
                versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
     }
    }
  }
 }

    dependencies {
     implementation project(':react-native-device-info')
     implementation project(':react-native-vector-icons')
     implementation fileTree(dir: "libs", include: ["*.jar"])
     implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
     implementation "com.facebook.react:react-native:+"  // From node_modules
    }

    // Run this once to be able to run the application with BUCK
    // puts all compile dependencies into folder libs for BUCK to use
     task copyDownloadableDepsToLibs(type: Copy) {
       from configurations.compile
       into 'libs'
     }

这里是如何加载SDK的说明:

And here are the instruction of how to load the SDK:

无法将 android 第三方扫描仪库加载到我的本机应用程序中 [英] unable to load an android third party scanner library into my react native app

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无法将 android 第三方扫描仪库加载到我的本机应用程序中 [英] unable to load an android third party scanner library into my react native app

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