React Native：尝试在Android上运行时，评估项目“：app”时出现问题

Question

我有一个react原生应用程序，当我试图在我的android设备上运行它时，我得到以下错误：

FAILURE: Build failed with an exception.

* Where:
Build file '/Users/myname/Desktop/myapp/android/app/build.gradle' line: 1

* What went wrong:
A problem occurred evaluating project ':app'.
> Failed to apply plugin [id 'com.android.application']
   > java.nio.file.AccessDeniedException: /Users/myname/.android/build-cache.lock

null

// 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:3.1.4'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}
allprojects {
    repositories {
        mavenLocal()
        jcenter()
        maven {
            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
            url "$rootDir/../node_modules/react-native/android"
        }
        google()
    }
}
task wrapper(type: Wrapper) {
    gradleVersion = '4.4'
    distributionUrl = distributionUrl.replace("bin", "all")
}

Answer 1

1.将您的分级升级为：-

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

2.删除gradle缓存文件。对于windows用户，它可以位于类似C:\users\username.gradle\caches的路径中。对于像sys这样的Unix，它将是~.gradle\caches