Работает httpPost во всех устройствах Android с 8.1 и ниже, но при запуске в Android 9.0 до получения ошибки, как показано ниже,
Failed resolution of: Lorg/apache/http/client/methods/HttpPost;
at com.makemusiccount.android.retrofit.RestClient.Execute(RestClient.java:99)
at com.makemusiccount.android.activity.LoginActivity$Login.doInBackground(LoginActivity.java:390)
at com.makemusiccount.android.activity.LoginActivity$Login.doInBackground(LoginActivity.java:368)
at android.os.AsyncTask$2.call(AsyncTask.java:333)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:764)
Caused by: java.lang.ClassNotFoundException: Didn't find class "org.apache.http.client.methods.HttpPost" on path: DexPathList[[zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/base.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_dependencies_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_resources_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_0_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_1_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_2_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_3_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_4_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_5_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_6_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_7_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_8_apk.apk", zip file "/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.makemusiccount.android-HYy0YZQPLivvJM2dD3B3ZA==/lib/x86, /system/lib]]