Error:Could not find com.android.tools.build:gradl

My App was working fine, then i add com.splunk:mint-android-sdk, which required upper version of gradle, so i upgrade the gradle to from 2.1 to 3.3. after that i am facing issues. Please review my gradle file and help me out and please guide me how it work.( This is my first app but i want sure make its should be working fine in all scenario )

Error:Could not find com.android.tools.build:gradle:3.3.
Searched in the following locations:
    file:/C:/Program Files/Android/Android Studio/gradle/m2repository/com/android/tools/build/gradle/3.3/gradle-3.3.pom
    file:/C:/Program Files/Android/Android Studio/gradle/m2repository/com/android/tools/build/gradle/3.3/gradle-3.3.jar
    https://plugins.gradle.org/m2/com/android/tools/build/gradle/3.3/gradle-3.3.pom
    https://plugins.gradle.org/m2/com/android/tools/build/gradle/3.3/gradle-3.3.jar
    https://jcenter.bintray.com/com/android/tools/build/gradle/3.3/gradle-3.3.pom
    https://jcenter.bintray.com/com/android/tools/build/gradle/3.3/gradle-3.3.jar
Required by:
    :MyApp:unspecified

My gradleare

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'

    android {
    compileSdkVersion 23
    buildToolsVersion "25.0.2"

    defaultConfig {
        applicationId "com.example.abc.myApp"
        minSdkVersion 19
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        multiDexEnabled= true
        manifestPlaceholders = [onesignal_app_id: "hjaadsffsddd8-2e6hgf-4fdsasdfgb63-8dad5-1111111",
                                onesignal_google_project_number: "REMOTE"]
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.4.0'
    compile 'com.android.support:design:23.4.0'
    compile 'com.android.support:cardview-v7:+'
    compile 'com.getbase:floatingactionbutton:1.10.1'
    compile 'com.android.support:recyclerview-v7:23.0.0'
    compile 'com.android.support:support-v4:23.0.0'
    compile 'com.readystatesoftware.sqliteasset:sqliteassethelper:+'

    compile 'com.onesignal:OneSignal:[3.6.1,3.99.99]'
    compile 'com.google.firebase:firebase-core:9.2.0'                        
    compile 'com.google.firebase:firebase-messaging:9.2.0'
    compile 'com.splunk:mint-android-sdk:5.2.1'
}

and

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        maven { url "https://plugins.gradle.org/m2/" }
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3'
       classpath 'com.google.gms:google-services:3.0.0'
        classpath 'com.splunk:mint-gradle-android-plugin:5.2.1'
    }
}
allprojects {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com" // Google's Maven repository
        }
    }
}
task clean(type: Delete) {
    delete rootProject.buildDir
}

回答1:

Inside buildscript add google() then open terminal write command-- gradlew build and press enter.

repositories {
    google()
    jcenter()
}

NB: Make sure you are in active network connection

回答2:

You changed Gradle plugin version, not Gradle version

Set your Gradle Plugin version to 2.3
Then open gradle/wrapper/gradle-wrapper.properties and change Gradle version at line distributionUrl

回答3:

This version of the gradle plugin doesn't exist.

classpath 'com.android.tools.build:gradle:3.3'

use the latest beta release:

classpath 'com.android.tools.build:gradle:3.0.0-beta6'

Instead if you would like to update gradle, update the distributionUrl in gradle-wrapper.properties.

回答4:

I've got this error, and the problem was the antivirus Avast blocking android studio from download the files.

so I've disabled it temporary and also runned Android studio as an admin. this solved the problem.

回答5:

I updated following line of

code: classpath 'com.android.tools.build:gradle:2.3.3' 
classpath 'com.google.gms:google-services:3.0.0'

and distributionUrl in gradle-wrapper.properties 'distributionUrl=https\://services.gradle.org/distributions/‌gradle-3.3-all.zip'

and MOST IMPORTANT is FILE>SETTING>Build,Execution,Deployment>Build Tools>Gradles: Project-level settings: checked :Use default gradle wrapper(recommended)