Gradle sync failed: Cause: compileSdkVersion is not specified

Question

I am trying to test my ionic app in android studio. It is throwing the below error.

Gradle sync failed: Cause: compileSdkVersion is not specified.

Any solution for this? What am I doing wrong.

Here is my build.gradle file

apply plugin: 'com.android.application'

buildscript {
    repositories {
        mavenCentral()
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0'
    }
}

// Allow plugins to declare Maven dependencies via build-extras.gradle.

allprojects {
    repositories {
        mavenCentral();
        jcenter()
    }
}

task wrapper(type: Wrapper) {
    gradleVersion = '4.1.0'
}

dependencies {
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:+'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:+'
    implementation 'com.android.support:appcompat-v7:27.+'
}

Answer 1

You are using android support library of 27.+ so you will have to give sdk version 27 as compileSdkVersion and targetSdkVersion otherwise your project does not know for which platform your project should be built. These parameter should be given in android directory like this in build.gradle(app) :

android {
    compileSdkVersion 27
    buildToolsVersion '27.0.3'
    defaultConfig {
        applicationId "com.example.abc.test"
        minSdkVersion 21
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

Just paste this code below apply plugin: 'com.android.application' this line

Answer 2

Please Add Below Line in your gradle file

  compileSdkVersion 26

please check below code for reference

android {
        compileSdkVersion 26
        buildToolsVersion '27.0.3'

        defaultConfig {
            applicationId ""
            minSdkVersion 15
            targetSdkVersion 26
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }
        buildTypes {
            release {
                minifyEnabled true
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }

    }

Answer 3

Note: There was an error in my app/build.gradle, hence it was not reading compileSDKVersion property. When I commented such a line, the error went away:

//def enableHermes = project.ext.react.get("enableHermes", false);

Firstly I got to follow this link:

ReactNative: Building from source

Then this:

ReactNative: android-development-environment

Then you can have this added in your settings.gradle file:

//
include ':ReactAndroid'
//
project(':ReactAndroid').projectDir = new File(
    rootProject.projectDir, '../node_modules/react-native/ReactAndroid')

---

For my ReactViro Sample project I also had to add dependencies from react-native node_modules directory:

    implementation project(':arcore_client') // remove this if AR not required
    implementation project(':gvr_common')
    implementation project(path: ':viro_renderer')
    implementation project(path: ':react_viro')

and

in my settings.gradle:

//
include ':react_viro', ':arcore_client', ':gvr_common', ':viro_renderer'
project(':arcore_client').projectDir = new File('../node_modules/react-viro/android/arcore_client')
project(':gvr_common').projectDir = new File('../node_modules/react-viro/android/gvr_common')
project(':viro_renderer').projectDir = new File('../node_modules/react-viro/android/viro_renderer')
project(':react_viro').projectDir = new File('../node_modules/react-viro/android/react_viro')
//

Answer 4

I am trying to test my ionic app in android studio. It is throwing the below error.

Gradle sync failed: Cause: compileSdkVersion is not specified.

Any solution for this ? What am I doing wrong.

Here is my build.gradle file

apply plugin: 'com.android.application'

buildscript {
    repositories {
        mavenCentral()
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0'
    }
}

// Allow plugins to declare Maven dependencies via build-extras.gradle.

allprojects {
    repositories {
        mavenCentral();
        jcenter()
    }
}

task wrapper(type: Wrapper) {
    gradleVersion = '4.1.0'
}

dependencies {
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:+'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:+'
    implementation 'com.android.support:appcompat-v7:27.+'
}

Answer 5

In my case, the error was coming from my own plugin and I fixed it by adding the following line to my plugin.xml file: (which I found simpler than updating the plugin's gradle file)

    <platform name="android">
        <preference name="android-compileSdkVersion" value="30" />
         ...

Answer 6

In my case, I resolved the issue by replacing the old plugin applying syntax:

apply plugin: 'com.android.library'
apply plugin: 'kotlin-android'

with the new plugins DSL in all my build.gradle files:

plugins {
    id "com.android.application"
    id "kotlin-android"
}

Answer 7

If you are working on a old project and using latest version of Android studio then simply change

compileSdk 27

to

compileSdkVersion 27

on your app level build.gradle file. it will fix this error

Answer 8

In my case, I fixed it by setting the Android gradle plugin version and gradle version to the latest.

Answer 9

Updating required Package.json libraries worked for me try it out. Most of the error will get resolved.

Remove Jcenter() from build.gradle .

Answer 10

Add this below mention code to your android/build.gradle

1. First, Save your code and uninstall your Android Studio and install again.

2. Add this line in your android/build.gradle.

   def REACT_NATIVE_VERSION = new File(['node', '--print',"JSON.parse(require('fs').readFileSync(require.resolve('react-native/package.json'), 'utf-8')).version"].execute(null, rootDir).text.trim())

    allprojects { configurations.all { resolutionStrategy { // Remove this override in 0.66, as a proper fix is included in react-native itself. force "com.facebook.react:react-native:" + REACT_NATIVE_VERSION } }

Answer 11

You don't need to specify android.buildToolsVersion from Build Tools For buildToolsVersion in version 27.0.3 or higher there's no need to specify buildToolsVersion .

Build Tools 27.0.3 or higher. Keep in mind, you no longer need to specify a version for the build tools using the android.buildToolsVersion property—the plugin uses the minimum required version by default.

Source ( developer.android.com )