Android Studio ML工具包无法加载OCR模块 [英] Android Studio ML kit cannot load OCR module

查看：230
本文介绍了Android Studio ML工具包无法加载OCR模块的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在开发一个涉及ML工具包的android应用.我已通过教程来了解如何设置可与Firebase一起使用的Android Studio.然后我开始使用文本识别API.这是我在某些按钮单击侦听器中拥有的代码:

I am working on an android app that involves ML kit. I went through the tutorial on how to set up Android Studio to work with Firebase. Then I headed to use the text recognition API. Here is the code that I am having in some button click listener:

        FirebaseVisionTextRecognizer detector = FirebaseVision.getInstance()
            .getOnDeviceTextRecognizer();
        Task<FirebaseVisionText> result = detector.processImage(
            FirebaseVisionImage.fromBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.test))
        )
            .addOnSuccessListener(new OnSuccessListener<FirebaseVisionText>() {
                @Override
                public void onSuccess(FirebaseVisionText firebaseVisionText) {
                    System.out.println(firebaseVisionText);
                }
            })
            .addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    e.printStackTrace();
                }
            });

我得到以下日志:

W/DynamiteModule: Local module descriptor class for com.google.android.gms.vision.dynamite.ocr not found.
I/DynamiteModule: Considering local module com.google.android.gms.vision.dynamite.ocr:0 and remote module com.google.android.gms.vision.dynamite.ocr:0
D/TextNativeHandle: Cannot load feature, fall back to load dynamite module.
W/DynamiteModule: Local module descriptor class for com.google.android.gms.vision.ocr not found.
I/DynamiteModule: Considering local module com.google.android.gms.vision.ocr:0 and remote module com.google.android.gms.vision.ocr:0
E/Vision: Error loading module com.google.android.gms.vision.ocr optional module true: com.google.android.gms.dynamite.DynamiteModule$LoadingException: No acceptable module found. Local version is 0 and remote version is 0.
D/TextNativeHandle: Broadcasting download intent for dependency ocr
W/TextNativeHandle: Native handle not yet available. Reverting to no-op handle.
W/DynamiteModule: Local module descriptor class for com.google.android.gms.vision.dynamite.ocr not found.
I/DynamiteModule: Considering local module com.google.android.gms.vision.dynamite.ocr:0 and remote module com.google.android.gms.vision.dynamite.ocr:0
D/TextNativeHandle: Cannot load feature, fall back to load dynamite module.
W/DynamiteModule: Local module descriptor class for com.google.android.gms.vision.ocr not found.
I/DynamiteModule: Considering local module com.google.android.gms.vision.ocr:0 and remote module com.google.android.gms.vision.ocr:0
E/Vision: Error loading module com.google.android.gms.vision.ocr optional module true: com.google.android.gms.dynamite.DynamiteModule$LoadingException: No acceptable module found. Local version is 0 and remote version is 0.
W/System.err: com.google.firebase.ml.common.FirebaseMLException: Waiting for the text recognition model to be downloaded. Please wait.
        at com.google.android.gms.internal.firebase_ml.zzrw.zzd(com.google.firebase:firebase-ml-vision@@24.0.0:21)
        at com.google.android.gms.internal.firebase_ml.zzrw.zza(com.google.firebase:firebase-ml-vision@@24.0.0:39)
        at com.google.android.gms.internal.firebase_ml.zzpd.zza(com.google.firebase:firebase-ml-common@@22.0.0:31)
        at com.google.android.gms.internal.firebase_ml.zzpf.call(Unknown Source:8)
        at com.google.android.gms.internal.firebase_ml.zzoz.zza(com.google.firebase:firebase-ml-common@@22.0.0:32)
        at com.google.android.gms.internal.firebase_ml.zzoy.run(Unknown Source:4)
        at android.os.Handler.handleCallback(Handler.java:873)
W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:99)
        at com.google.android.gms.internal.firebase_ml.zze.dispatchMessage(com.google.firebase:firebase-ml-common@@22.0.0:6)
        at android.os.Looper.loop(Looper.java:193)
        at android.os.HandlerThread.run(HandlerThread.java:65)

我四处搜寻以查看如何解决这些错误:

I googled around to see how I can fix any of those errors:

W/DynamiteModule: Local module descriptor class for com.google.android.gms.vision.dynamite.ocr not found.
I/DynamiteModule: Considering local module com.google.android.gms.vision.dynamite.ocr:0 and remote module com.google.android.gms.vision.dynamite.ocr:0
D/TextNativeHandle: Cannot load feature, fall back to load dynamite module.
W/DynamiteModule: Local module descriptor class for com.google.android.gms.vision.ocr not found.
I/DynamiteModule: Considering local module com.google.android.gms.vision.ocr:0 and remote module com.google.android.gms.vision.ocr:0
E/Vision: Error loading module com.google.android.gms.vision.ocr optional module true: com.google.android.gms.dynamite.DynamiteModule$LoadingException: No acceptable module found. Local version is 0 and remote version is 0.


W/System.err: com.google.firebase.ml.common.FirebaseMLException: Waiting for the text recognition model to be downloaded. Please wait.

到目前为止，我已经尝试清除Google Play服务数据(版本19.4.20)，重新启动/重新创建模拟器，调整Gradle配置(例如添加/删除firebase-core依赖项). 项目级配置:

So far I have tried clearing Google Play Services data (version 19.4.20), restarting/recreating the emulator, tweaking Gradle configurations (e.g. adding/removing firebase-core dependency). Project-level config:

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.1'
        classpath 'com.google.gms:google-services:4.3.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()

    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

应用程序模块级配置:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.2"
    defaultConfig {
        applicationId "com.example.user.app"
        minSdkVersion 24
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'com.google.android.gms:play-services-vision:19.0.0'
    implementation 'com.google.firebase:firebase-ml-vision:24.0.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.2.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

}

apply plugin: 'com.google.gms.google-services'

我决定尝试一下Barcode API，并添加了

I decided to give Barcode API a shot, and added 

implementation 'com.google.firebase:firebase-ml-vision-barcode-model:16.0.1'

作为依赖项.令我惊讶的是，当我对其进行API调用时，成功列表器被选中，并显示以下日志:

as dependency. To my surprise, when I made an API call to it, the success listner was hit and the following logs appeared:

I/DynamiteModule: Considering local module com.google.firebase.ml.vision.dynamite.barcode:10000 and remote module com.google.firebase.ml.vision.dynamite.barcode:0
    Selected local version of com.google.firebase.ml.vision.dynamite.barcode
W/is.moneytravel: Accessing hidden field Ljava/nio/Buffer;->address:J (light greylist, reflection)
I/tflite: Initialized TensorFlow Lite runtime.
I/native: barcode_detector_client.cc:222 Not using NNAPI

尽管OCR API仍然产生相同的错误. 我认为它必须处理从中获取库的存储库. 条形码API:

While the OCR API still produced the same error. I think it has to deal with the repositories the libraries are fetched from. Barcode API:

Considering local module com.google.firebase.ml.vision.dynamite.barcode:10000 and remote module com.google.firebase.ml.vision.dynamite.barcode:0

OCR API:

Considering local module com.google.android.gms.vision.dynamite.ocr:0 and remote module com.google.android.gms.vision.dynamite.ocr:0

我对Gradle和Firebase的经验太少，无法弄清楚这一点. 为什么从android.gms获取OCR API，而从firebase.ml获取条形码API?

I have too little experience with Gradle and Firebase to figure this one out. Why is OCR API fetched from android.gms, while Barcode API comes from firebase.ml?

推荐答案

解决方案是更新Google Play服务应用.起初我并不认为这是一个选项，因为我希望API 29模拟器安装最新的Google Play服务.我在模拟器上登录了Google Play，搜索了Google Play服务，将其卸载(没有更新"选项)，然后再次安装了它.尽管文本识别开始按预期运行，但仍然说安装的版本是19.4.20.以下是一些相关的日志:

The solution was to update Google Play Services app. I did not consider this as an option at first as I would have expected an API 29 emulator to have an up-to-date Google Play Services installed. I signed into Google Play on the emulator, searched Google Play Services, uninstalled it (there was no "update" option), and installed it again. It still says that the installed version is 19.4.20 though the text recognition started working as expected. Here are some relevant logs:

W/DynamiteModule: Local module descriptor class for com.google.android.gms.vision.dynamite.ocr not found.
I/DynamiteModule: Considering local module com.google.android.gms.vision.dynamite.ocr:0 and remote module com.google.android.gms.vision.dynamite.ocr:0
D/TextNativeHandle: Cannot load feature, fall back to load dynamite module.
I/DynamiteModule: Considering local module com.google.android.gms.vision.ocr:0 and remote module com.google.android.gms.vision.ocr:1
I/DynamiteModule: Selected remote version of com.google.android.gms.vision.ocr, version >= 1
V/DynamiteModule: Dynamite loader version >= 2, using loadModule2NoCrashUtils

这篇关于Android Studio ML工具包无法加载OCR模块的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

查看全文
相关文章
移动开发最新文章
热门教程
热门工具
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆