Application crashing only on lollipop devices

Question

Application is working fine on all OS, but when i add facebook SDK, it gives me following error message on lollipop devices.

compile 'com.facebook.android:facebook-android-sdk:4.20.0'

Caused by: java.lang.ClassNotFoundException: Didn't find class "retrofit2.Retrofit$Builder" on path: DexPathList[[zip file "/data/app/com.myapp.app-3/base.apk", zip file

java.lang.NoClassDefFoundError: Failed resolution of: Lretrofit2/Retrofit$Builder; Caused by: java.lang.ClassNotFoundException: Didn't find class "retrofit2.Retrofit$Builder" on path: DexPathList[[zip file "/data/app/com.myapp.app-3/base.apk", zip file "/data/app/ com.myapp.app-3/split_lib_dependencies_apk.apk",

This is my gradle file.

compileSdkVersion 25
buildToolsVersion "25.0.0"
defaultConfig {

    applicationId 'com.myapp.app'
    minSdkVersion 21
    targetSdkVersion 23
    versionCode 122
    versionName "1.2.5"
    multiDexEnabled true
    ndk {
        abiFilters "armeabi", "armeabi-v7a", "x86"
    }

configurations.all {
    resolutionStrategy {
    force 'com.squareup.okhttp:okhttp:2.4.0'
    force 'com.squareup.okhttp:okhttp-urlconnection:2.0.0'
    force 'com.squareup.okio:okio:1.11.0'
    force 'com.squareup.okhttp3:okhttp:3.6.0'
        force 'com.squareup.retrofit2:retrofit:2.2.0'
        force 'com.android.support:recyclerview-v7:25.0.0'
        force 'com.android.support:support-v4:25.0.0'
        force 'com.android.support:cardview-v7:25.0.0'
        force 'com.android.support:appcompat-v7:25.0.0'
        force 'com.android.support:design:25.0.0'
        force 'com.android.support:support-annotations:25.0.0'
        force 'com.google.android.gms:play-services-ads:9.0.1'
        force 'com.google.android.gms:play-services-location:9.0.1'
        force 'com.google.android.gms:play-services-auth-base:9.0.1'
        force 'com.google.android.gms:play-services-base:9.0.1'

        }



configurations.all {
    resolutionStrategy {
        failOnVersionConflict()
    }
}       

Kindly guide me what can be the reason of this crash, and why its only crashing on lollipop devices and working fine on Marshmallow and Nougat.

EDIT

If I don't use facebook sdk, everything seems fine, no crashes. Maybe Facebook sdk cause this problem but I don't know why

Answer 1

You are using too many libraries so your methods have crossed over 64k so you have to enable Multidex for you project

inside your build.gradle

     android {
    defaultConfig {
        ...
        minSdkVersion 15 
        targetSdkVersion 25
        multiDexEnabled true
    }
    ...
}

dependencies {
  compile 'com.android.support:multidex:1.0.1'
}

and in AndroidManifest.xml

  <application
        android:name="android.support.multidex.MultiDexApplication" >
    ...
</application>

see This for more info

Answer 2

You are getting ClassNotFoundException

The ClassNotFoundException is thrown when the Java Virtual Machine (JVM) tries to load a particular class and the specified class cannot be found in the classpath.

At first you should set Multidex .

Android application (APK) files contain executable bytecode files in the form of Dalvik Executable (DEX) files, which contain the compiled code used to run your app. The Dalvik Executable specification limits the total number of methods that can be referenced within a single DEX file to 65,536, including Android framework methods, library methods, and methods in your own code. Getting past this limit requires that you configure your app build process to generate more than one DEX file, known as a multidex configuration.

You should use Latest Version

    compileSdkVersion 25
    buildToolsVersion '25.0.2'

    defaultConfig {

        applicationId 'com.myapp.app'
        minSdkVersion 21
        targetSdkVersion 25 // Good approach using same version of compileSdkVersion 
        versionCode 122
        versionName "1.2.5"
        multiDexEnabled true
        ndk {
            abiFilters "armeabi", "armeabi-v7a", "x86"
        }

    configurations.all {

        resolutionStrategy {
        force 'com.squareup.okhttp:okhttp:3.7.0'
        force 'com.squareup.okhttp:okhttp-urlconnection:2.7.5'
        force 'com.squareup.okio:okio:1.12.0'
        force 'com.squareup.okhttp3:okhttp:3.7.0'
        force 'com.squareup.retrofit2:retrofit:2.2.0'
        force 'com.android.support:recyclerview-v7:25.2.0'
        force 'com.android.support:support-v4:25.2.0'
        force 'com.android.support:cardview-v7:25.2.0'
        force 'com.android.support:appcompat-v7:25.2.0'
        force 'com.android.support:design:25.2.0'
        force 'com.android.support:support-annotations:25.2.0'
        force 'com.google.android.gms:play-services-ads:10.2.1'
        force 'com.google.android.gms:play-services-location:10.2.1'
        force 'com.google.android.gms:play-services-auth-base:10.2.1'
        force 'com.google.android.gms:play-services-base:10.2.1'

        }

     configurations.all {
     resolutionStrategy {
        failOnVersionConflict()
       }
    }

After that Clean-Rebuild-Run .

FYI

You can use below version if 4.20.0 crashing .

compile 'com.facebook.android:facebook-android-sdk:4.16.0'