NoClassDefFoundError exception in android stuidio

Question

Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lorg/apache/http/impl/client/DefaultHttpClient

I am not able to resolve below error :

Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lorg/apache/http/impl/client/DefaultHttpClient; at com.medicend.jykra.medicend.Async.Parser.LoginParser.hitWS(LoginParser.java:68) at com.medicend.jykra.medicend.Async.Parser.LoginParser.postData(LoginParser.java:50) at com.medicend.jykra.medicend.Activity.SignInActivity$LoginAsync.doInBackground(SignInActivity.java:91) at com.medicend.jykra.medicend.Activity.SignInActivity$LoginAsync.doInBackground(SignInActivity.java:73) 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.impl.client.DefaultHttpClient" on path: DexPathList[[zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/base.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_dependencies_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_resources_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_0_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_1_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_2_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_3_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_4_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_5_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_6_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_7_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_8_apk.apk", zip file "/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/lib/x86, /system/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134) at java.lang.ClassLoader.loadClass(ClassLoader.java:379) at java.lang.ClassLoader.loadClass(ClassLoader.java:312) at com.medicend.jykra.medicend.Async.Parser.LoginParser.hitWS(LoginParser.java:68)  at com.medicend.jykra.medicend.Async.Parser.LoginParser.postData(LoginParser.java:50)  at com.medicend.jykra.medicend.Activity.SignInActivity$LoginAsync.doInBackground(SignInActivity.java:91)  at com.medicend.jykra.medicend.Activity.SignInActivity$LoginAsync.doInBackground(SignInActivity.java:73)  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)  Suppressed: java.io.IOException: No original dex files found for dex location /data/app/com.medicend.jykra.medicend-IiBcrMY7QQm4ixa9RIMICQ==/split_lib_resources_apk.apk at dalvik.system.DexFile.openDexFileNative(Native Method) at dalvik.system.DexFile.openDexFile(DexFile.java:354) at dalvik.system.DexFile.(DexFile.java:101) at dalvik.system.DexFile.(DexFile.java:75) at dalvik.system.DexPathList.loadDexFile(DexPathList.java:394) at dalvik.system.DexPathList.makeDexElements(DexPathList.java:354) at dalvik.system.DexPathList.(DexPathList.java:164) at dalvik.system.BaseDexClassLoader.(BaseDexClassLoader.java:74) at dalvik.system.BaseDexClassLoader.(BaseDexClassLoader.java:65) at dalvik.system.PathClassLoader.(PathClassLoader.java:64) at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:73) E/AndroidRuntime: at com.android.internal.os.ClassLoaderFactory.createClassLoader(ClassLoaderFactory.java:88) at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:74) at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:40) at android.app.LoadedApk.createOrUpdateClassLoaderLocked(LoadedApk.java:727) at android.app.LoadedApk.getClassLoader(LoadedApk.java:810) at android.app.LoadedApk.getResources(LoadedApk.java:1032) at android.app.ContextImpl.createAppContext(ContextImpl.java:2345) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5749) at android.app.ActivityThread.access$1100(ActivityThread.java:199) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1650) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6669) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

Answer 1

Add the following to your manifest file under 'application':

<uses-library android:name="org.apache.http.legacy" android:required="false"/>

https://developer.android.com/about/versions/pie/android-9.0-changes-28#apache-p

Answer 2

You are getting this error because your app uses the legacy org.apache.http.legacy client and your app's targetSdkVersion is set to 28 or higher.

Consider using HttpURLConnection or lowering your targetSdkVersion in build.gradle.