I keep getting below error when i add new library into gradle:
Error:Execution failed for task ':app:transformClassesWithDexForDebug'. com.android.build.transform.api.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.7.0_51\bin\java.exe'' finished with non-zero exit value 2
This is my gradle:
    apply plugin: 'com.android.application'
android {
    compileSdkVersion 23
    buildToolsVersion '23.0.1'
    useLibrary 'org.apache.http.legacy'
    defaultConfig {
        applicationId "ir.whc.news"
        minSdkVersion 14
        targetSdkVersion 23
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }
}
dependencies {
    testCompile 'junit:junit:4.12'
    compile project(":volley")
    compile project(":AndroidBootstrap")
    compile 'com.android.support:recyclerview-v7:23.1.0'
    compile 'com.android.support:support-annotations:23.1.0'
    compile 'com.android.support:appcompat-v7:23.1.0'
    compile 'com.android.support:design:23.1.0'
    compile 'com.shamanland:fonticon:0.1.9'
    compile 'com.google.android.gms:play-services:8.3.0'
    compile 'com.weiwangcn.betterspinner:library-material:1.1.0'
    compile 'com.joanzapata.pdfview:android-pdfview:1.0.4@aar'
    compile 'com.github.bumptech.glide:glide:3.7.0'
    compile 'com.android.support:support-v4:23.1.0'
    compile 'com.github.satyan:sugar:1.4'
    provided 'org.apache.commons:commons-collections4:4.0'
}
apply plugin: 'com.google.gms.google-services'
In the accepted answer of this SO question, There's written that a conflict is the reason of this error.  I do not know what is the conflict in my gradle dependency?
 
     
     
    