我正在开发一个涉及 ML 套件的 Android 应用程序。我经历了tutorial https://firebase.google.com/docs/android/setup了解如何设置 Android Studio 以与 Firebase 配合使用。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的代码：
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)
我用谷歌搜索看看如何修复这些错误：
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依赖性）。
项目级配置：
// 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
implementation 'com.google.firebase:firebase-ml-vision-barcode-model:16.0.1'
作为依赖。令我惊讶的是，当我对其进行 API 调用时，成功监听器被命中并出现以下日志：
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
而 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：
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，无法解决这个问题。
为什么 OCR API 是从android.gms，而Barcode API来自firebase.ml?
