Question

对于[this flutter库] [1]，barcode scanner应该添加firebase到项目中，但是这样做之后，我得到了这个错误，我还不能解决这个问题

以调试模式在WAS LX1A上启动lib \ main.dart ...正在初始化   gradle ...解决依赖关系...   *运行Gradle时出错：ProcessException：退出了进程“ E：\ Projects \ Flutter \ barcode_scanner \ android \ gradlew.bat”   异常：

失败：构建失败，并出现异常。



其中：构建文件'E：\ Projects \ Flutter \ barcode_scanner \ android \ app \ build.gradle'行：   14



出了什么问题：评估项目'：app'时出现问题。


ASCII




尝试：使用--stacktrace选项运行以获取堆栈跟踪。使用--info或--debug选项运行以获取更多日志输出。使用--scan运行以获取完整的见解。



在https://help.gradle.org

获得更多帮助

在6秒内建立失败命令：   E：\ Projects \ Flutter \ barcode_scanner \ android \ gradlew.bat app：properties

完成错误：请在以下位置查看您的Gradle项目设置：   android /文件夹。

第14行是：

apply plugin: 'com.android.application'

我不确定是什么问题，这是我对此的实现方式

pabspec.yaml内容：

version: 1.0.0+1
environment:
  sdk: '>=2.0.0-dev.28.0 <3.0.0'

dependencies:
  flutter:
    sdk: flutter
  firebase_core: ^0.4.0
  ...
...

android/build.gradle内容：

buildscript {
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        classpath 'com.google.gms:google-services:4.3.0'
    }
}

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
}

android/app/build.gradle内容：

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.")
}

apply plugin: 'com.android.application'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 28

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "barcodescanner.pishguy.barcode_scanner"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    testImplementation 'junit:junit:4.12'
    implementation 'com.google.firebase:firebase-core:17.0.1'
    androidTestImplementation 'androidx.test:runner:1.3.0-alpha01'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0-alpha01'
}
apply plugin: 'com.google.gms.google-services'

运行flutter命令：

E:\Projects\Flutter\barcode_scanner>flutter pub get
Running "flutter pub get" in barcode_scanner...                     2.7s


  [1]: https://github.com/facundomedica/fast_qr_reader_view

Answer 1

嗨，大家好，这是我的确切问题；我设法最终解决了这个问题；

这是我对代码进行的更改；

在AppName / Android / gradle / build.gradle上：

buildscript {
    ext.kotlin_version = '1.3.50' //had to changed it previously 1.2.71
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.1' //had to changed previously 3.2.1
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.gms:google-services:4.3.2'
    }
}

然后在AppName / Android / gradle / wrapper / gradle-wrapper.properties上，我刚刚更改了这一行：

distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip //it was peviously gradle-4.10.2-all.zip

所有这些更改之后，我的应用程序开始工作！

Answer 2

如果该'com.google.gms：google-services：4.3.0'。将其切换为“ com.google.gms：google-services：4.2.0” 不起作用或带来其他错误，如我的那样。......添加此

subprojects {
        project.configurations.all {
            resolutionStrategy.eachDependency { details ->
                if (details.requested.group == 'com.android.support'
                        && !details.requested.name.contains('multidex') ) {
                    details.useVersion "27.1.1"
                }
                if (details.requested.group == 'androidx.core'
                        && !details.requested.name.contains('androidx') ) {
                    details.useVersion "1.0.1"
                }
            }
        }
    }

到android / build.gradle

因此您的代码将是

 buildscript {
    ext.kotlin_version = '1.2.51'
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.gms:google-services:4.2.0'
    }

    subprojects {
        project.configurations.all {
            resolutionStrategy.eachDependency { details ->
                if (details.requested.group == 'com.android.support'
                        && !details.requested.name.contains('multidex') ) {
                    details.useVersion "27.1.1"
                }

                if (details.requested.group == 'androidx.core'
                        && !details.requested.name.contains('androidx') ) {
                    details.useVersion "1.0.1"
                }
            }
        }
    }

}

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 3

'com.google.gms：google-services：4.3.0'有问题。
将其切换为'com.google.gms：google-services：4.2.0'，对我来说就可以使用。

Answer 4

最新版本的firebase库中有一些breaking changes。我遇到了同样的问题，但是在migrating to AndriodX之后一切正常。

将Firebase添加到Flutter项目中并失败：构建失败，出现异常错误

4 个答案: