Error on retrofit when add dependencies of okhttp

Hello, when I am using Retrofit without Okhttp dependencies, its working fine, but when I want to add okhttp for logging to my dependencies. It show error in my logcat:

EXCEPTION: main
    Process: com.myapp., PID: 2687
    java.lang.ExceptionInInitializerError
        at okhttp3.OkHttpClient.newSslSocketFactory(OkHttpClient.java:296)
        at okhttp3.OkHttpClient.<init>(OkHttpClient.java:262)
        at okhttp3.OkHttpClient.<init>(OkHttpClient.java:235)
        at retrofit2.Retrofit$Builder.build(Retrofit.java:580)
        at com.myapp..fragment.LoginFragment.onCreate(LoginFragment.java:73)
        at android.support.v4.app.Fragment.performCreate(Fragment.java:2414)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1418)
        at android.support.v4.app.FragmentTransition.addToFirstInLastOut(FragmentTransition.java:1195)
        at android.support.v4.app.FragmentTransition.calculateFragments(FragmentTransition.java:1078)
        at android.support.v4.app.FragmentTransition.startTransitions(FragmentTransition.java:117)
        at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2408)
        at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2366)
        at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2273)
        at android.support.v4.app.FragmentManagerImpl.dispatchStateChange(FragmentManager.java:3273)
        at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:3229)
        at android.support.v4.app.FragmentController.dispatchActivityCreated(FragmentController.java:201)
        at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:620)
        at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:178)
        at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1188)
        at android.app.Activity.performStart(Activity.java:5241)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2166)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2243)
        at android.app.ActivityThread.access$800(ActivityThread.java:135)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5019)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
        at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.IllegalStateException: Expected Android API level 21+ but was 19
        at okhttp3.internal.platform.AndroidPlatform.buildIfSupported(AndroidPlatform.java:238)
        at okhttp3.internal.platform.Platform.findPlatform(Platform.java:202)
        at okhttp3.internal.platform.Platform.<clinit>(Platform.java:79)
        at okhttp3.OkHttpClient.newSslSocketFactory(OkHttpClient.java:296) 
        at okhttp3.OkHttpClient.<init>(OkHttpClient.java:262) 
        at okhttp3.OkHttpClient.<init>(OkHttpClient.java:235) 
        at retrofit2.Retrofit$Builder.build(Retrofit.java:580) 
        at com.myapp.fragment.LoginFragment.onCreate(LoginFragment.java:73) 
        at android.support.v4.app.Fragment.performCreate(Fragment.java:2414) 
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1418) 
        at android.support.v4.app.FragmentTransition.addToFirstInLastOut(FragmentTransition.java:1195) 
        at android.support.v4.app.FragmentTransition.calculateFragments(FragmentTransition.java:1078) 
        at android.support.v4.app.FragmentTransition.startTransitions(FragmentTransition.java:117) 
        at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2408) 
        at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2366) 
        at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2273) 
        at android.support.v4.app.FragmentManagerImpl.dispatchStateChange(FragmentManager.java:3273) 
        at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:3229) 
        at android.support.v4.app.FragmentController.dispatchActivityCreated(FragmentController.java:201) 
        at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:620) 
        at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:178) 
        at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1188) 
        at android.app.Activity.performStart(Activity.java:5241) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2166) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2243) 
        at android.app.ActivityThread.access$800(ActivityThread.java:135) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:136) 
        at android.app.ActivityThread.main(ActivityThread.java:5019) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:515) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
        at dalvik.system.NativeStart.main(Native Method) 

No problem when I using retrofit only

[pdapnz]

Same problem.

This is because:

OkHttp [starting from 3.13] works on Android 5.0+ (API level 21+) and on Java 8+.

https://medium.com/square-corner-blog/okhttp-3-13-requires-android-5-818bb78d07ce

The only way is use OkHttp 3.12.x if your minSDK lower 21.

P.S. It is not clear why the OkHttp developers did not raise the major version, given such major changes.

[DDihanov]

If you guys are still crashing on Android 4 using the latest 2.7.1 Retrofit version, after setting the source and target compability version to 1.8 force the old OkHttp version like this, and it should work:

implementation("com.squareup.retrofit2:retrofit:2.7.1")

implementation("com.squareup.okhttp3:okhttp:3.12.8") {
    force = true
}

implementation "com.squareup.okhttp3:logging-interceptor:3.12.8"