找不到 com.google.firebase:firebase-ml-vision

Question

当我将 flutter_camera_ml_vision 添加到现有项目时，出现以下错误。

Execution failed for task ':app:checkDebugAarMetadata'.                 
> Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
   > Could not find com.google.firebase:firebase-ml-vision:.            
     Required by:                                                       
         project :app > project :firebase_ml_vision

我不知道是什么原因造成的，所以我复制了代码（来自官网）。 之后，我尝试链接 firebase 并仅添加 flutter_camera_ml_vision，但我得到了与上面相同的错误。

main.dart与上面的URL相同，我更改的其他文件如下。 flutter_camera_ml_vision 的版本是3.0.1。 作为补充，./gradlew 命令成功。

//android/app/src/main/AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.association_firebase">
   <application
        android:label="association_firebase"
        android:icon="@mipmap/ic_launcher">
        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">

            <meta-data
              android:name="io.flutter.embedding.android.NormalTheme"
              android:resource="@style/NormalTheme"
              />

            <meta-data
              android:name="io.flutter.embedding.android.SplashScreenDrawable"
              android:resource="@drawable/launch_background"
              />
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <meta-data
            android:name="flutterEmbedding"
            android:value="2" />
        <!-- add -->
        <meta-data
            android:name="com.google.firebase.ml.vision.DEPENDENCIES"
            android:value="ocr" />
    </application>
</manifest>

//android/app/build.gradle

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
// add
apply plugin: 'com.google.gms.google-services'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 30

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    defaultConfig {
        applicationId "com.example.association_firebase"
        minSdkVersion 21   // changed to 21
        targetSdkVersion 30
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    buildTypes {
        release {
            signingConfig signingConfigs.debug
        }
    }
    // add
    dependencies {
        api 'com.google.firebase:firebase-ml-vision-image-label-model:19.0.0'
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    //add
    implementation platform('com.google.firebase:firebase-bom:28.0.1')
    //add
    implementation 'com.google.firebase:firebase-analytics'
}

//android/build.gradle

buildscript {
    ext.kotlin_version = '1.3.50'
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        //add
        classpath 'com.google.gms:google-services:4.3.8'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

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

Answer 1

我在使用

firebase_ml_vision: ^0.12.0+2

时遇到类似情况，

然后我降级到

firebase_ml_vision: ^0.9.10

并在

app/build.gradle

中添加以下内容：

实施平台('com.google.firebase:firebase-bom:28.0.1') 实现 'com.google.android.gms:play-services-vision:20.1.3'

然后可以编译应用程序。

Answer 2

我通过转移到推荐的、未弃用的包来解决这个问题：https://pub.dev/packages/google_ml_kit。

API 非常相似，因此不需要进行太多代码更改。请参阅迁移指南了解更多信息。

Answer 3

有人在 Kotlin 中发现这个问题吗？在 Android Studio 中？

我也有同样的问题

在此输入图片描述