我的 react-native 应用程序未启动（启动 2 秒并关闭）

Posted 2023-05-07

【中文标题】我的 react-native 应用程序未启动（启动 2 秒并关闭）

【英文标题】：My react-native app is not launching (launch 2 seconds and close)

【发布时间】：2020-02-01 04:22:05

【问题描述】：

我从 2 天开始就遇到 react-native 问题，实际上我开始使用 expo 开发我的应用程序，它运行良好，但是当我退出 expo 时，我可以成功构建它，但它不会在设备上启动。 我在 Internet 和 *** 上尝试了很多解决方案，但都没有奏效。

非常感谢您的帮助。

我使用 ubuntu 19.04、gradle 5.5、gradle-plugin 3.4.2

这是我的项目根 build.gradle

buildscript 
    ext 
        buildToolsVersion = "28.0.3"
        minSdkVersion = 16
        compileSdkVersion = 28
        targetSdkVersion = 28
    
    repositories 
        google()
        jcenter()
    
    dependencies 
        classpath("com.android.tools.build:gradle:3.4.2")

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    


allprojects 
    repositories 
        mavenLocal()
        maven 
            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
            url("$rootDir/../node_modules/react-native/android")
        
        maven 
            // Android JSC is installed from npm
            url("$rootDir/../node_modules/jsc-android/dist")
        

        google()
        jcenter()
        maven  url 'https://jitpack.io' 
    

这是 app/build.gradle

apply plugin: "com.android.application"

import com.android.build.OutputFile

/**
 * The react.gradle file registers a task for each build variant (e.g. bundleDebugJsAndAssets
 * and bundleReleaseJsAndAssets).
 * These basically call `react-native bundle` with the correct arguments during the Android build
 * cycle. By default, bundleDebugJsAndAssets is skipped, as in debug/dev mode we prefer to load the
 * bundle directly from the development server. Below you can see all the possible configurations
 * and their defaults. If you decide to add a configuration block, make sure to add it before the
 * `apply from: "../../node_modules/react-native/react.gradle"` line.
 *
 * project.ext.react = [
 *   // the name of the generated asset file containing your JS bundle
 *   bundleAssetName: "index.android.bundle",
 *
 *   // the entry file for bundle generation
 *   entryFile: "index.android.js",
 *
 *   // https://facebook.github.io/react-native/docs/performance#enable-the-ram-format
 *   bundleCommand: "ram-bundle",
 *
 *   // whether to bundle JS and assets in debug mode
 *   bundleInDebug: false,
 *
 *   // whether to bundle JS and assets in release mode
 *   bundleInRelease: true,
 *
 *   // whether to bundle JS and assets in another build variant (if configured).
 *   // See http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Build-Variants
 *   // The configuration property can be in the following formats
 *   //         'bundleIn$productFlavor$buildType'
 *   //         'bundleIn$buildType'
 *   // bundleInFreeDebug: true,
 *   // bundleInPaidRelease: true,
 *   // bundleInBeta: true,
 *
 *   // whether to disable dev mode in custom build variants (by default only disabled in release)
 *   // for example: to disable dev mode in the staging build type (if configured)
 *   devDisabledInStaging: true,
 *   // The configuration property can be in the following formats
 *   //         'devDisabledIn$productFlavor$buildType'
 *   //         'devDisabledIn$buildType'
 *
 *   // the root of your project, i.e. where "package.json" lives
 *   root: "../../",
 *
 *   // where to put the JS bundle asset in debug mode
 *   jsBundleDirDebug: "$buildDir/intermediates/assets/debug",
 *
 *   // where to put the JS bundle asset in release mode
 *   jsBundleDirRelease: "$buildDir/intermediates/assets/release",
 *
 *   // where to put drawable resources / React Native assets, e.g. the ones you use via
 *   // require('./image.png')), in debug mode
 *   resourcesDirDebug: "$buildDir/intermediates/res/merged/debug",
 *
 *   // where to put drawable resources / React Native assets, e.g. the ones you use via
 *   // require('./image.png')), in release mode
 *   resourcesDirRelease: "$buildDir/intermediates/res/merged/release",
 *
 *   // by default the gradle tasks are skipped if none of the JS files or assets change; this means
 *   // that we don't look at files in android/ or ios/ to determine whether the tasks are up to
 *   // date; if you have any other folders that you want to ignore for performance reasons (gradle
 *   // indexes the entire tree), add them here. Alternatively, if you have JS files in android/
 *   // for example, you might want to remove it from here.
 *   inputExcludes: ["android/**", "ios/**"],
 *
 *   // override which node gets called and with what additional arguments
 *   nodeExecutableAndArgs: ["node"],
 *
 *   // supply additional arguments to the packager
 *   extraPackagerArgs: []
 * ]
 */

project.ext.react = [
    entryFile: "index.js",
    enableHermes: false,  // clean and rebuild if changing
]

apply from: "../../node_modules/react-native/react.gradle"

/**
 * Set this to true to create two separate APKs instead of one:
 *   - An APK that only works on ARM devices
 *   - An APK that only works on x86 devices
 * The advantage is the size of the APK is reduced by about 4MB.
 * Upload all the APKs to the Play Store and people will download
 * the correct one based on the CPU architecture of their device.
 */
def enableSeparateBuildPerCPUArchitecture = false

/**
 * Run Proguard to shrink the Java bytecode in release builds.
 */
def enableProguardInReleaseBuilds = false

/**
 * The preferred build flavor of javascriptCore.
 *
 * For example, to use the international variant, you can use:
 * `def jscFlavor = 'org.webkit:android-jsc-intl:+'`
 *
 * The international variant includes ICU i18n library and necessary data
 * allowing to use e.g. `Date.toLocaleString` and `String.localeCompare` that
 * give correct results when using with locales other than en-US.  Note that
 * this variant is about 6MiB larger per architecture than default.
 */
def jscFlavor = 'org.webkit:android-jsc:+'

/**
 * Whether to enable the Hermes VM.
 *
 * This should be set on project.ext.react and mirrored here.  If it is not set
 * on project.ext.react, JavaScript will not be compiled to Hermes Bytecode
 * and the benefits of using Hermes will therefore be sharply reduced.
 */
def enableHermes = project.ext.react.get("enableHermes", false);

android 
    compileSdkVersion rootProject.ext.compileSdkVersion

    compileOptions 
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    

    defaultConfig 
        applicationId "com.lumennui"
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        versionCode 1
        versionName "1.0"
    
    splits 
        abi 
            reset()
            enable enableSeparateBuildPerCPUArchitecture
            universalApk false  // If true, also generate a universal APK
            include "armeabi-v7a", "x86", "arm64-v8a", "x86_64"
        
    
    signingConfigs 
        debug 
            storeFile file('debug.keystore')
            storePassword 'android'
            keyAlias 'androiddebugkey'
            keyPassword 'android'
        
    
    buildTypes 
        debug 
            signingConfig signingConfigs.debug
        
        release 
            // Caution! In production, you need to generate your own keystore file.
            // see https://facebook.github.io/react-native/docs/signed-apk-android.
            signingConfig signingConfigs.debug
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
        
    
    // 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:
            // https://developer.android.com/studio/build/configure-apk-splits.html
            def versionCodes = ["armeabi-v7a": 1, "x86": 2, "arm64-v8a": 3, "x86_64": 4]
            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 fileTree(dir: "libs", include: ["*.jar"])
    implementation "com.facebook.react:react-native:+"  // From node_modules

    if (enableHermes) 
        def hermesPath = "../../node_modules/hermes-engine/android/";
        debugImplementation files(hermesPath + "hermes-debug.aar")
        releaseImplementation files(hermesPath + "hermes-release.aar")
     else 
        implementation jscFlavor
    


// 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: file("../../node_modules/@react-native-community/cli-platform-android/native_modules.gradle"); applyNativeModulesAppBuildGradle(project)

【参考方案1】：

当您的 gradle 构建工具和 gradle 包装器版本不兼容时，通常会发生此问题。更改 gradle 包装器的版本后，它对我来说很好。

试用我的设置。

在android/build.gradle 中将您的com.android.tools.build:gradle 更改为3.3.1 并且在buildScript.ext 中应该有这行supportLibVersion="28.0.0"

在android/gradle/wrapper/gradle-wrapper.properties 中将distributionUrl 更改为https\://services.gradle.org/distributions/gradle-4.10.2-all.zip

最好知道你运行的是什么 react-native 版本。

【讨论】：

非常感谢@Nguyen 的回答，我正在使用 React-native 0.61.2。我尝试了您的解决方案，然后再回复您。

我只是尝试您的解决方案，但它没有任何改变，如果您有其他建议。再次感谢

【参考方案2】：

我的问题终于解决了，是由于react-native-screens，我降级到后使用的是1.0.0-alpha.22版本>1.0.0-alpha.7 一切正常。希望它会对某人有所帮助。