我创建了一个简单的React-Native项目,并尝试将其导入Android Studio IDE . 问题是构建过程失败并给出以下两个错误:
为解决第一个错误,我将appcompat版本更改为项目级build.gradle文件中的27.0.2,其中我以前的原生Android应用程序已成功构建 . 但是使用此API版本将引发相同的错误 . 在下面,附加了build.gradle文件以查看是否有错误 .
(build.gradle) --> project level
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
maven {
url 'https://maven.google.com/'
name 'Google'
}
}
dependencies {
classpath 'com.android.tools.build:gradle:2.3.3'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
mavenLocal()
jcenter()
maven {
url 'https://maven.google.com/'
name 'Google'
}
}
}
ext {
buildToolsVersion = "27.0.2"
minSdkVersion = 16
compileSdkVersion = 27
targetSdkVersion = 27
supportLibVersion = "27.0.2"
}
这是模块级build.gradle .
project.ext.react = [
entryFile: "index.js"
]
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 "com.sampleproj"
minSdkVersion rootProject.ext.minSdkVersion
targetSdkVersion rootProject.ext.targetSdkVersion
versionCode 1
versionName "1.0"
ndk {
abiFilters "armeabi-v7a", "x86"
}
}
splits {
abi {
reset()
enable enableSeparateBuildPerCPUArchitecture
universalApk false // If true, also generate a universal APK
include "armeabi-v7a", "x86"
}
}
buildTypes {
release {
minifyEnabled enableProguardInReleaseBuilds
proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
}
}
applicationVariants.all { variant ->
variant.outputs.each { output ->
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 {
compile fileTree(dir: "libs", include: ["*.jar"])
compile "com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}"
compile "com.facebook.react:react-native:+" // From node_modules
}
task copyDownloadableDepsToLibs(type: Copy) {
from configurations.compile
into 'libs'
}
我该如何解决这些问题?
1 回答
我找到了解决问题的这些步骤 .
第一步使构建过程成功,但在模拟器或物理设备上运行会显示一个红色屏幕,其中显示: Unable to load script from assets index.android.bundle . 要解决此问题,请按照instructions进行操作 .
要完成第二步,您应该将react-native版本从版本0.56降级到0.55.4(如果您使用此版本),因为0.56版本中存在错误 . How to!
如果在执行第二步后遇到 babel-preset-react-native\index.js" provided an invalid property of default... ,只需更改项目package.json中的以下行,然后使用以下命令同步:
并非所有人都需要执行所有步骤,但是当我遇到错误时,此过程可帮助我解决这些问题 .