在发布模式下（在调试模式下工作正常）在设备上运行React Native应用程序时，启动时我崩溃了。主要错误似乎是：
AndroidRuntime：java.lang.RuntimeException：无法从资产“ index.android.bundle”加载脚本。确保您的捆绑包包装正确，或者您正在运行打包服务器。
我发现了有关此错误的各种线索，但其中涉及的是旧版本，提供的解决方案均无效。
日志如下：
12-16 19:20:28.581 29088 29109 E AndroidRuntime: FATAL EXCEPTION: Thread-3
12-16 19:20:28.581 29088 29109 E AndroidRuntime: Process: net.cozic.joplin, PID: 29088
12-16 19:20:28.581 29088 29109 E AndroidRuntime: java.lang.RuntimeException: Unable to load script from assets 'index.android.bundle'. Make sure your bundle is packaged correctly or you're running a packager server.
12-16 19:20:28.581 29088 29109 E AndroidRuntime: at com.facebook.react.bridge.CatalystInstanceImpl.jniLoadScriptFromAssets(Native Method)
12-16 19:20:28.581 29088 29109 E AndroidRuntime: at com.facebook.react.bridge.CatalystInstanceImpl.loadScriptFromAssets(CatalystInstanceImpl.java:216)
12-16 19:20:28.581 29088 29109 E AndroidRuntime: at com.facebook.react.bridge.JSBundleLoader$1.loadScript(JSBundleLoader.java:32)
12-16 19:20:28.581 29088 29109 E AndroidRuntime: at com.facebook.react.bridge.CatalystInstanceImpl.runJSBundle(CatalystInstanceImpl.java:243)
12-16 19:20:28.581 29088 29109 E AndroidRuntime: at com.facebook.react.ReactInstanceManager.createReactContext(ReactInstanceManager.java:1114)
12-16 19:20:28.581 29088 29109 E AndroidRuntime: at com.facebook.react.ReactInstanceManager.access$900(ReactInstanceManager.java:116)
12-16 19:20:28.581 29088 29109 E AndroidRuntime: at com.facebook.react.ReactInstanceManager$5.run(ReactInstanceManager.java:913)
12-16 19:20:28.581 29088 29109 E AndroidRuntime: at java.lang.Thread.run(Thread.java:761)
12-16 19:20:28.582 1695 1707 W ActivityManager: Force finishing activity net.cozic.joplin/.MainActivity
这是我的app / build.gradle文件：
apply plugin: "com.android.application"
import com.android.build.OutputFile
apply from: "../../node_modules/react-native/react.gradle"
def enableSeparateBuildPerCPUArchitecture = false
def enableProguardInReleaseBuilds = false
android {
compileSdkVersion rootProject.ext.compileSdkVersion
buildToolsVersion rootProject.ext.buildToolsVersion
defaultConfig {
applicationId "net.cozic.joplin"
minSdkVersion rootProject.ext.minSdkVersion
targetSdkVersion rootProject.ext.targetSdkVersion
versionCode 2097414
versionName "1.0.178"
ndk {
abiFilters "armeabi-v7a", "x86"
}
}
splits {
abi {
reset()
enable enableSeparateBuildPerCPUArchitecture
universalApk false // If true, also generate a universal APK
include "armeabi-v7a", "x86"
}
}
signingConfigs {
release {
if (project.hasProperty('JOPLIN_RELEASE_STORE_FILE')) {
storeFile file(JOPLIN_RELEASE_STORE_FILE)
storePassword JOPLIN_RELEASE_STORE_PASSWORD
keyAlias JOPLIN_RELEASE_KEY_ALIAS
keyPassword JOPLIN_RELEASE_KEY_PASSWORD
}
}
}
buildTypes {
release {
minifyEnabled enableProguardInReleaseBuilds
proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
signingConfig signingConfigs.release
}
}
// applicationVariants are e.g. debug, release
applicationVariants.all { variant ->
variant.outputs.each { output ->
// For each separate APK per architecture, set a unique version code as described here:
// http://tools.android.com/tech-docs/new-build-system/user-guide/apk-splits
def versionCodes = ["armeabi-v7a":1, "x86":2]
def abi = output.getFilter(OutputFile.ABI)
if (abi != null) { // null for the universal-debug, universal-release variants
output.versionCodeOverride =
versionCodes.get(abi) * 1048576 + defaultConfig.versionCode
}
}
}
}
dependencies {
implementation project(':react-native-firebase')
implementation (project(':react-native-camera')) {
exclude group: "com.google.android.gms"
}
implementation project(':react-native-file-viewer')
implementation project(':react-native-securerandom')
implementation project(':react-native-fs')
implementation project(':react-native-image-picker')
implementation project(':react-native-vector-icons')
implementation project(':react-native-fs')
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
implementation "com.facebook.react:react-native:+" // From node_modules
implementation project(':react-native-sqlite-storage')
implementation project(':rn-fetch-blob')
implementation project(':react-native-document-picker')
implementation project(':react-native-image-resizer')
implementation project(':react-native-share-extension')
implementation project(':react-native-version-info')
implementation "com.facebook.react:react-native:+"
implementation "com.google.android.gms:play-services-base:16.0.1" // For Firebase
implementation "com.google.firebase:firebase-core:16.0.4" // For Firebase
implementation "com.google.firebase:firebase-messaging:17.3.4" // For Firebase
implementation 'me.leolin:ShortcutBadger:1.1.21@aar' // For Firebase - this line if you wish to use badge on Android
compile ("com.android.support:support-v4:26.0.1") {
force = true //<-- force dependency resolution to 26.0.1 in my case
}
}
// Run this once to be able to run the application with BUCK
// puts all compile dependencies into folder libs for BUCK to use
task copyDownloadableDepsToLibs(type: Copy) {
from configurations.compile
into 'libs'
}
apply from: "../../node_modules/react-native-vector-icons/fonts.gradle"
apply plugin: 'com.google.gms.google-services' // For Firebase
和android / build.gradle：
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
ext {
buildToolsVersion = "27.0.3"
minSdkVersion = 16
compileSdkVersion = 27
targetSdkVersion = 26
supportLibVersion = "27.1.1"
}
repositories {
jcenter()
google()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.0' // Upgraded from 3.1.4 to 3.2.0 for Firebase
classpath 'com.google.gms:google-services:4.0.1' // For Firebase
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
mavenLocal()
google()
jcenter() // Was added by me - still needed?
maven {
url "https://maven.google.com"
}
maven {
// All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
url "$rootDir/../node_modules/react-native/android"
}
}
}
subprojects {
afterEvaluate {project ->
if (project.hasProperty("android")) {
android {
compileSdkVersion 26
buildToolsVersion "27.0.3"
}
}
}
}
task wrapper(type: Wrapper) {
gradleVersion = '4.4'
distributionUrl = distributionUrl.replace("bin", "all")
}
任何想法可能是什么问题？
编辑：我无法将gradle构建工具从3.2.0降级为3.1.4，因为一些答案表明，因为Firebase模块需要3.2.0。
答案 0 :(得分：4)
您应该尝试将Gradle构建工具从3.2.1降级到3.1.4
答案 1 :(得分：2)
从gradle构建工具3.2.1降级到3.1.4也为我解决了这个问题。我花了几天的时间才弄清楚。
答案 2 :(得分：1)
您未指定所使用的react-native版本。我在0.57.3遇到了同样的问题，其他答案使我走上了正轨：带有android gradle插件版本3.2的android构建系统中存在一个错误，该问题已在0.57.5中解决（ {3}}。
错误修复程序为changelog，如果您不想升级RN，手动修复非常简单。
答案 3 :(得分：1)
尝试运行下面给出的命令：
react-native软件包--platform android --dev false --entry-file index.js-捆绑输出 android / app / src / main / assets / index.android.bundle --assets-dest android / app / src / main / resreact-native软件包--platform android --dev false-入口文件index.js-捆绑输出 android / app / src / main / assets / index.android.bundle --assets-dest android / app / src / main / res
对我有用
答案 4 :(得分：1)
此修复程序将RN升级到0.57.5或将gradle降级到3.1.4。
对于那些想要一个真正整洁的解决方法而无需升级/降级的人：
在您的app/build.gradle中添加jsBundleDirRelease：
project.ext.react = [
entryFile: "index.js",
jsBundleDirRelease: "$buildDir/intermediates/merged_assets/release/mergeReleaseAssets/out"
]