运行我的 flutter 应用程序时出现此错误。
`失败：构建失败并出现异常。
无法创建任务“：app：processDebugMainManifest”。 无法调用“Object.toString()”，因为“value”为 null
使用 --stacktrace 选项运行以获取堆栈跟踪。 使用 --info 或 --debug 选项运行以获得更多日志输出。 使用 --scan 运行以获得完整的见解。`
我尝试了
flutter cleanflutter pub cache clean下面是一些屏幕截图和 flutter doctor 输出，以提供更多背景信息
[√] Flutter (Channel stable, 3.22.2, on Microsoft Windows [Version 10.0.22631.3880], locale en-GH)
• Flutter version 3.22.2 on channel stable at C:\Users\d.partey\Documents\Development\flutter sdks\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 761747bfc5 (7 weeks ago), 2024-06-05 22:15:13 +0200
• Engine revision edd8546116
• Dart version 3.4.3
• DevTools version 2.34.3
[√] Windows Version (Installed version of Windows is version 10 or higher)
[√] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
• Android SDK at C:\Users\d.partey\AppData\Local\Android\sdk
• Platform android-VanillaIceCream, build-tools 34.0.0
• Java binary at: C:\Program Files\Android\Android Studio\jbr\bin\java
• Java version OpenJDK Runtime Environment (build 17.0.11+0--11852314)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[X] Visual Studio - develop Windows apps
X Visual Studio not installed; this is necessary to develop Windows apps.
Download at https://visualstudio.microsoft.com/downloads/.
Please install the "Desktop development with C++" workload, including all of its default components
[√] Android Studio (version 2024.1)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 17.0.11+0--11852314)
[√] VS Code (version 1.91.1)
• VS Code at C:\Users\d.partey\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.92.0
[√] Connected device (4 available)
• sdk gphone64 x86 64 (mobile) • emulator-5554 • android-x64 • Android 14 (API 34) (emulator)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.22631.3880]
• Chrome (web) • chrome • web-javascript • Google Chrome 126.0.6478.182
• Edge (web) • edge • web-javascript • Microsoft Edge 126.0.2592.113
[√] Network resources
• All expected network resources are available.
以下是我的清单
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="world.opine.app">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.LOCATION" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-sdk
android:minSdkVersion="23"
android:targetSdkVersion="34" />
<queries>
<intent>
<action android:name="android.intent.action.VIEW" />
<data android:scheme="https" />
</intent>
<intent>
<action android:name="android.intent.action.DIAL" />
<data android:scheme="tel" />
</intent>
<intent>
<action android:name="android.intent.action.SEND" />
<data android:mimeType="*/*" />
</intent>
</queries>
<application
android:icon="@mipmap/ic_launcher"
android:label="Opine World"
tools:replace="android:label">
<activity
android:name="io.flutter.embedding.android.FlutterActivity"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
android:exported="true"
android:hardwareAccelerated="true"
android:launchMode="singleTop"
android:showWhenLocked="true"
android:theme="@style/LaunchTheme"
android:turnScreenOn="true"
android:windowSoftInputMode="adjustResize">
<meta-data
android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
android:value="true" />
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data
android:name="flutter_deeplinking_enabled"
android:value="true" />
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="opine.world"
android:scheme="http" />
<data android:scheme="https" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:host="opine.world"
android:scheme="opine" />
</intent-filter>
</activity>
<activity
android:name=".EmbeddingV1Activity"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale"
android:hardwareAccelerated="true"
android:theme="@style/LaunchTheme"
android:windowSoftInputMode="adjustResize"></activity>
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="${geoApiKEY}" />
<meta-data
android:name="flutterEmbedding"
android:value="2" />
<meta-data
android:name="com.google.firebase.messaging.default_notification_channel_id"
android:value="high_importance_channel" />
</application>
</manifest>
android/build.gradle
buildscript {
ext.kotlin_version = '2.0.0'
ext.ndkVersion = "20.1.5948944"
ext {
compileSdkVersion = 34 // or latest
targetSdkVersion = 34 // or latest
appCompatVersion = "1.7.0" // or latest
}
repositories {
google()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:7.4.2'
// START: FlutterFire Configuration
classpath 'com.google.gms:google-services:4.4.2'
classpath 'com.google.firebase:firebase-crashlytics-gradle:2.9.2'
// END: FlutterFire Configuration
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google()
mavenCentral()
maven {
// [required] background_fetch
url "${project(':background_fetch').projectDir}/libs"
}
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
tasks.register("clean", Delete) {
delete rootProject.buildDir
}
// subprojects {
// project.configurations.all {
// resolutionStrategy.eachDependency { details ->
// if (details.requested.group == 'androidx.core' &&
// !details.requested.name.contains('androidx')) {
// details.useVersion "1.0.1"
// }
// }
// }
// }
// subprojects {
// afterEvaluate { subproject ->
// if (subproject.hasProperty("android")) {
// android {
// compileSdkVersion 27
// buildToolsVersion '27.0.3'
// }
// }
// }
// }
应用程序/build.gradle
def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}
def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}
def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
throw GradleException("versionCode not found. Define flutter.versionCode in the local.properties file.")
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
throw GradleException("versionName not found. Define flutter.versionName in the local.properties file.")
}
apply plugin: 'com.android.application'
// START: FlutterFire Configuration
apply plugin: 'com.google.gms.google-services'
apply plugin: 'com.google.firebase.crashlytics'
// END: FlutterFire Configuration
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}
def geoApiKEY = localProperties.getProperty('geo.apiKEY')
apply plugin: 'kotlin-android'
android {
compileSdkVersion rootProject.ext.compileSdkVersion
buildToolsVersion "34.0.0"
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "world.opine.app"
minSdkVersion 23
targetSdkVersion rootProject.ext.targetSdkVersion
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
multiDexEnabled true
manifestPlaceholders = [geoApiKEY: geoApiKEY]
}
signingConfigs {
release {
// if (System.getenv()["CI"]) { // CI=true is exported by Codemagic
// storeFile file(System.getenv()["CM_KEYSTORE_PATH"])
// storePassword System.getenv()["CM_KEYSTORE_PASSWORD"]
// keyAlias System.getenv()["CM_KEY_ALIAS"]
// keyPassword System.getenv()["CM_KEY_PASSWORD"]
// } else {
keyAlias keystoreProperties['keyAlias']
keyPassword keystoreProperties['keyPassword']
// storeFile file(keystoreProperties['storeFile'])
storeFile file("Users/Kwabena/key.jks")
storePassword keystoreProperties['storePassword']
// }
}
}
buildTypes {
release {
signingConfig signingConfigs.release
// minifyEnabled true
// useProguard true
// proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
// android.applicationVariants.all { variant ->
// variant.outputs.all {
// outputFileName = "opine-${variant.name}-${variant.versionName}-${variant.versionCode}.apk"
// }
// }
}
}
android {
namespace 'world.opine.app'
compileOptions {
sourceCompatibility 1.8
targetCompatibility 1.8
}
}
lint {
disable 'InvalidPackage'
}
// buildTypes {
// release {
// // TODO: Add your own signing config for the release build.
// // Signing with the debug keys for now, so `flutter run --release` works.
// signingConfig signingConfigs.debug
// minifyEnabled true
// useProguard true
// proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
// }
// }
// splits {
// // Configures multiple APKs based on ABI.
// abi {
// // Enables building multiple APKs per ABI.
// enable true
// // By default all ABIs are included, so use reset() and include to specify that we only
// // want APKs for armeabi-v7a and arm64-v8a.
// // Resets the list of ABIs that Gradle should create APKs for to none.
// reset()
// // Specifies a list of ABIs that Gradle should create APKs for.
// // include "armeabi-v7a", "arm64-v8a"
// include "armeabi-v7a", "arm64-v8a", "x86"
// // Specifies that we do not want to also generate a universal APK that includes all ABIs.
// universalApk false
// }
// }
}
flutter {
source '../..'
}
dependencies {
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test:runner:1.6.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation platform('com.google.firebase:firebase-bom:31.0.2')
implementation 'com.google.firebase:firebase-analytics-ktx'
// api "androidx.core:core:1.1.0-alpha04"
}
好像和java版本有关 尝试改变
compileOptions {
sourceCompatibility 1.8
targetCompatibility 1.8
}
到
compileOptions {
sourceCompatibility JavaVersion.VERSION_17
targetCompatibility JavaVersion.VERSION_17
}