Build Error on Android Devices

[ochikov]

Hello,
I am getting build error with the following error:

A problem occurred configuring project ':react-native-os'.
> compileSdkVersion is not specified.`A problem occurred configuring project ':react-native-os'.
> compileSdkVersion is not specified.

My gradle configuration is:

buildscript {
    ext {
        buildToolsVersion = "28.0.3"
        minSdkVersion = 16
        compileSdkVersion = 28
        targetSdkVersion = 28
        supportLibVersion = "28.0.0"
    }
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.1'
        classpath 'com.google.gms:google-services:4.2.0'

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

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

[marcusleeeugene]

Met with the exact same problem, couldn't find solutions anywhere.. Have you tried looking into the react-native-os library gradle file? I'm not sure what to change but I think it might be because of the specified sdk/build versions in the library

[marcusleeeugene]

@ochikov Hey, I think I found a fix for this. I'm not sure why but the safeExtGet didn't work for me. So i commented them out, and did the normal declaration for the exact same sdk versions. Here's how my code looks like. Hopefully it works for you too.

/*
def safeExtGet(prop, fallback) {
    rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
}
 */

buildscript {
    repositories {
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:1.2.3'
    }
}

apply plugin: 'com.android.library'

android {
    //safeExtGet('compileSdkVersion', 23)
    //safeExtGet('buildToolsVersion', '23.0.1')
    compileSdkVersion 23
    buildToolsVersion '23.0.1'

    defaultConfig {
        //safeExtGet('minSdkVersion', 16)
        //safeExtGet('targetSdkVersion', 22)
        minSdkVersion 16
        targetSdkVersion 22

        versionCode 1
        versionName "0.2.0"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    // needed for https://github.com/square/okio/issues/58
    lintOptions {
        abortOnError false
        warning 'InvalidPackage'
    }
}

repositories {
    mavenCentral()
}

dependencies {
    compile 'com.facebook.react:react-native:+'

}

[ochikov]

Thank you. I will try it.

…

On Fri, 26 Jul 2019 at 17:49, Marcus ***@***.***> wrote: @ochikov <https://github.com/ochikov> Hey, I think I found a fix for this. I'm not sure why but the safeExtGet didn't work for me. So i commented them out, and did the normal declaration for the exact same sdk versions. Here's how my code looks like. Hopefully it works for you too. `/* def safeExtGet(prop, fallback) { rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback } */ buildscript { repositories { jcenter() } dependencies { classpath 'com.android.tools.build:gradle:1.2.3' } } apply plugin: 'com.android.library' android { //safeExtGet('compileSdkVersion', 23) //safeExtGet('buildToolsVersion', '23.0.1') compileSdkVersion 23 buildToolsVersion '23.0.1' defaultConfig { //safeExtGet('minSdkVersion', 16) //safeExtGet('targetSdkVersion', 22) minSdkVersion 16 targetSdkVersion 22 versionCode 1 versionName "0.2.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } // needed for square/okio#58 lintOptions { abortOnError false warning 'InvalidPackage' } } repositories { mavenCentral() } dependencies { compile 'com.facebook.react:react-native:+' } ` — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#14?email_source=notifications&email_token=ADHVGETT2LUJJ3RRZP2Y4L3QBMFGRA5CNFSM4IGDJEAKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD242QVQ#issuecomment-515483734>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ADHVGET4ERXKLDSQ6BHDZQDQBMFGRANCNFSM4IGDJEAA> .

[Tbaut]

edit: Thanks, that worked.

[Jerd22]

file '\node_modules\react-native-os\android\build.gradle' line: 51

dependencies {
    compile 'com.facebook.react:react-native:+'
}

change to

dependencies {
    api 'com.facebook.react:react-native:+'
}