Just another build.gradle file

build.gradle

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-kapt'

android {
    compileSdkVersion 25
    buildToolsVersion "26.0.0"
    defaultConfig {
        applicationId "pe.devpicon.android.myoxxorequestapp"
        minSdkVersion 21
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support:support-v4:25.3.1'

    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'
    compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"

    compile 'com.firebaseui:firebase-ui-auth:2.0.1'
    compile('com.facebook.android:facebook-android-sdk:4.22.1')
    compile("com.twitter.sdk.android:twitter-core:3.0.0@aar") { transitive = true }

    compile 'com.github.bumptech.glide:glide:4.0.0-RC1'
    kapt 'com.github.bumptech.glide:compiler:4.0.0-RC1'
}
repositories {
    mavenCentral()
}