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android can't add one singnal

I am trying to one signal to my project and i add dependencies like this
buildscript {
repositories {
maven { url 'https://plugins.gradle.org/m2/' }
}
dependencies {
classpath 'gradle.plugin.com.onesignal:onesignal-gradle-plugin:0.8.1'
}
}
apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin'
repositories {
maven { url 'https://maven.google.com' }
}
and in my build.gradle
buildscript {
repositories {
maven { url 'https://maven.fabric.io/public' }
jcenter()
google()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.0'
classpath 'com.google.gms:google-services:3.2.1'
classpath 'io.fabric.tools:gradle:1.24.4'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
maven { url 'http://jhoobin.abroid.com/repo/' }
maven { url "https://jitpack.io" }
maven { url "https://maven.google.com" }
google()
}
}
but i keep getting error when i sync the gradle
Error:Unable to resolve dependency for ':app#debug/compileClasspath': Could not find any version that matches com.google.android.gms:play-services:15.+.
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what is wrong with my code ?

These are my gradles.
This is my :app gradle
//noinspection GradleCompatible
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.3"
defaultConfig {
applicationId "com.app.app"
manifestPlaceholders = [onesignal_app_id: "APP_ID_HERE",
// Project number pulled from dashboard, local value is ignored.
onesignal_google_project_number: "PROJECT_NUMBER_HERE"]
minSdkVersion 15
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile files('libs/commons-io-2.4.jar')
compile 'com.google.firebase:firebase-core:10.2.0'
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:design:23.4.0'
compile 'com.onesignal:OneSignal:3.+#aar'
// Required for OneSignal, even if you have added FCM.
compile 'com.google.android.gms:play-services-gcm:10.2.0'
testCompile 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'
My main projects gradle
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.3'
classpath 'com.google.gms:google-services:3.0.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

Android Studio: Error (2,0) Could not find method android() for arguments

Android Studio: Error (2,0) Could not find method android() for arguments [build_a4vgo3afez72iz8asoewhe39c$_run_closure1#7748caff] on root project '[ProjectName]' of type org.gradle.api.Project.
I am a new programmer just starting out, however I've had a problem with Android Studio in that my project will not successfully build. The response each build is the one stated above.
Anything you spot that can be the source of the problem? (Thanks in advance)
My Module app:
apply plugin: 'com.android.application'
apply plugin: 'java'
android {
compileSdkVersion 27
defaultConfig {
applicationId "com.example.rookr.scientificcalculator"
minSdkVersion 16
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'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:27.1.12'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
My Top-end app:
android {
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.1'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
}

Remove android from top build
File should be start with buildscript

Remove android from the Top-level build.gradle.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.1'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

Failed to resolve: com.github.worker8:tourguide:1.0.17-SNAPSHOT

Whenever I'm trying to include worker8/TourGuide library in my gradle file it is throwing me this error:
"Failed to resolve: com.github.worker8:tourguide:1.0.17-SNAPSHOT"
I tried to clean the project and tried to rebuild as well but nothing worked for me. Please provide your help. Thanks in advance.
app gradle file
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.example.abdulrehman.myapplication"
minSdkVersion 15
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
// compile ('com.github.worker8:tourguide:1.0.13-SNAPSHOT#aar'){
// transitive=true
// }
compile 'com.github.amlcurran.showcaseview:library:5.4.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}
Project gradle file
buildscript {
repositories {
jcenter()
google()
mavenCentral()
maven(){
url "https://oss.sonatype.org/content/repositories/snapshots"
}
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.0'
classpath 'com.google.gms:google-services:3.0.0'
}
}
allprojects {
repositories {
jcenter()
google()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

dont place third party url in buildscript. place in allprojects.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.0'
classpath 'com.google.gms:google-services:3.0.0'
}
}
allprojects {
repositories {
jcenter()
google()
mavenCentral()
maven(){
url "https://oss.sonatype.org/content/repositories/snapshots"
}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

failed to resolve junit:junit:4.12

i am using studio 2.0 every time in new project it shows error(26,17) failed to resolve junit:junit:4.12.
after reading on stackover flow i added repository in build.gradle
but it still not work for me.
here is code:
(project:myapplication)
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
//jcenter{url 'http://jcenter.bintray.com/'}
}
dependencies {
classpath 'com.android.tools.build:gradle:2.0.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}}
repositories{
maven{url 'http://repo1.maven.org/maven2'}
jcenter { url 'http://jcenter.bintray.com/' }}
allprojects {
repositories {
jcenter()
// jcenter{url 'http://jcenter.bintray.com/'}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
(module:app)
apply plugin: 'com.android.application'
repositories{
maven{url 'http://repo1.maven.org/maven2'}
jcenter { url 'http://jcenter.bintray.com/' }
}
android {
compileSdkVersion 23
buildToolsVersion "23.0.3"
defaultConfig {
applicationId "com.example.akshay.myapplication"
minSdkVersion 17
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.2.1'
compile 'com.android.support:design:23.1.1'
}

issue to add a repository from android arsenal

I am trying to add a PinnedSectionListView from android arsenal.
the way to add say:
Add the specific repository to your build file:
repositories {
maven {
url "https://jitpack.io"
}
}
Add the dependency in your build file (do not forget to specify the correct qualifier, usually 'aar'):
dependencies {
compile 'com.github.beworker:pinned-section-listview:v1.0'
}
so i did that (build.gradle (Project)):
buildscript {
repositories {
jcenter()
maven {
url "https://jitpack.io"
}
}
dependencies {
classpath 'com.android.tools.build:gradle:1.3.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
maven {
url "https://jitpack.io"
}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
build.gradle (Module): apply plugin: 'com.android.application'
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.1"
defaultConfig {
applicationId "com.example.jonathandg.listviewsections"
minSdkVersion 16
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.0'
compile 'com.beworker:pinned-section-listview:v1.0#aar'
//compile 'com.beworker:pinned-section-listview:v1.0'
}
then the android studio message is
Error:(25, 13) Failed to resolve: com.beworker:pinned-section-listview:v1.0
The repositoty is in: https://android-arsenal.com/details/1/264

Try below Gragle dependency line
compile 'com.github.beworker:pinned-section-listview:1.1'