Question

我遵循了一些教程，将Firebase添加到我的flutter项目中。但是，无论我做什么，我的项目都会因同样的失败而中断。

我尝试创建新项目，但同样失败。

现在，我关注了this tutorial。

在更改应用程序级别的build.gradle文件之后，我立即开始构建我的应用程序。我使用flutter run在物理设备上运行该应用程序。

每一次，我都遇到同样的错误，并且在互联网上进行搜索并不能解决问题，因此是问题。

我的错误：

* Error running Gradle:
ProcessException: Process "D:\Projects\flutter_creds\android\gradlew.bat" exited abnormally:
Starting a Gradle Daemon, 1 incompatible and 1 stopped Daemons could not be reused, use --status for details


FAILURE: Build failed with an exception.

* Where:
Build file 'D:\Projects\flutter_creds\android\app\build.gradle' line: 24

* What went wrong:
A problem occurred evaluating project ':app'.
> ASCII

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1m 58s
  Command: D:\Projects\flutter_creds\android\gradlew.bat app:properties

Please review your Gradle project setup in the android/ folder.
Exited (sigterm)

错误出现在我的应用程序级别build.gradle文件的第24行。但是，这是一条线，我没有改变。这是我的build.gradle（应用程序级别）

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'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 28

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

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.sowingfiber.flutter_creds"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        testInstrumentationRunner "android.support.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 {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
apply plugin: 'com.google.gms.google-services'

Answer 1

由于AndroidX的兼容性，创建一个新项目，然后执行以下步骤：

为了使您的项目与AndroidX兼容，您需要在 gradle.properties 文件中添加以下两行：
```
android.useAndroidX = true
android.enableJetifier = true
```
确保在您的 app build.gradle文件中，将 compileSdkVersion 和 targetSdkVersion 都设置为 28

从主 app build.gradle文件中删除注释为“ 删除”的所有行：

android {
    compileSdkVersion 28

lintOptions {
    disable 'InvalidPackage'
}

defaultConfig {
    applicationId "YOUR_APPLICATION_ID"
    minSdkVersion 16
    targetSdkVersion 28
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" //Remove
}

buildTypes {
    release {
        signingConfig signingConfigs.debug
    }
   }
 }


dependencies {
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2' // Remove
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' // Remove
}

如果您尝试构建项目，则会收到与AndroidX核心库有关的错误，要修复该错误，请在 子项目中添加代码类别中的项目级别build.gradle 文件：

buildscript {
    repositories {
    google()
    jcenter()
    }

dependencies {
    classpath 'com.android.tools.build:gradle:3.2.1'
}

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

注意1：在第4步中，请记住子项目类别应在dependecies类别以下，如果不存在，则复制并粘贴给出的代码。

我希望尝试在Android Studio中执行上述步骤，保存所有文件并重新启动项目，添加Firebase依赖项以及文档Documentation中要求进行的更改。会的。

好运！！

将Firebase添加到flutter项目中，会中断项目

1 个答案: