Didn't find class "org.apache.http.client.protocol.HttpClientContext"

[westmatrix]

@vbauer

I'm very new to Andriod developement and I'm trying this libary.

Gradle is like this:

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support:design:23.2.0'
    compile 'com.microsoft.ews-java-api:ews-java-api:2.0'
}

There are some comipiling warnings:

Information:Gradle tasks [:app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:compileDebugSources, :app:compileDebugAndroidTestSources]
Warning:Dependency org.apache.httpcomponents:httpclient:4.4.1 is ignored for debug as it may be conflicting with the internal version provided by Android.
         In case of problem, please repackage it with jarjar to change the class packages
Warning:Dependency commons-logging:commons-logging:1.2 is ignored for debug as it may be conflicting with the internal version provided by Android.
         In case of problem, please repackage it with jarjar to change the class packages
Warning:Dependency org.apache.httpcomponents:httpclient:4.4.1 is ignored for release as it may be conflicting with the internal version provided by Android.
         In case of problem, please repackage it with jarjar to change the class packages
Warning:Dependency commons-logging:commons-logging:1.2 is ignored for release as it may be conflicting with the internal version provided by Android.
         In case of problem, please repackage it with jarjar to change the class packages

Eventually I launched the app in the emulator and clicked the button to make EWS call:

Caused by: java.lang.ClassNotFoundException: Didn't find class "org.apache.http.client.protocol.HttpClientContext" on path: DexPathList[[zip file "/data/app/domain.test.android.jasonyu.myfirstapp-2/base.apk"],nativeLibraryDirectories=[/data/app/domain.test.android.jasonyu.myfirstapp-2/lib/x86, /vendor/lib, /system/lib]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
    at microsoft.exchange.webservices.data.core.ExchangeServiceBase.initializeHttpContext(ExchangeServiceBase.java:261) 
    at microsoft.exchange.webservices.data.core.ExchangeServiceBase.setUseDefaultCredentials(ExchangeServiceBase.java:677) 
    at microsoft.exchange.webservices.data.core.ExchangeServiceBase.<init>(ExchangeServiceBase.java:173) 
    at microsoft.exchange.webservices.data.core.ExchangeService.<init>(ExchangeService.java:3718) 
    at domain.test.android.jasonyu.myfirstapp.MainActivity.onButtonGoClick(MainActivity.java:94) 

[vbauer]

@mytoughlife

Hello. Could you please try to check this solution: http://stackoverflow.com/questions/30755989/dependency-org-apache-httpcomponentshttpclient4-4-1-is-ignored-for-release-as ?

[westmatrix]

@vbauer Thanks for your reply.

That was the first thing I tried. "Make Project" succeeded, but failed with below error if I tried to run it:

:app:compileDebugSources UP-TO-DATE
:app:transformClassesWithDexForDebug
UNEXPECTED TOP-LEVEL EXCEPTION:
Error:Execution failed for task ':app:transformClassesWithDexForDebug'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_73\bin\java.exe'' finished with non-zero exit value 2

Then I read about http://stackoverflow.com/questions/33369163/execution-failed-for-task-apptransformclasseswithdexfordebug-while-implement

After adding multiDexEnabled true, I got

:app:compileDebugJavaWithJavac UP-TO-DATE
:app:compileDebugNdk UP-TO-DATE
:app:compileDebugSources UP-TO-DATE
:app:transformClassesWithJarMergingForDebug FAILED
Error:Execution failed for task ':app:transformClassesWithJarMergingForDebug'.
> com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: org/apache/http/concurrent/Cancellable.class

[westmatrix]

@vbauer

I eventually managed to get rid of that error by doing this:

    compile group: 'org.apache.httpcomponents' , name: 'httpclient-android' , version: '4.3.5.1'
    compile ('com.microsoft.ews-java-api:ews-java-api:2.0') {
        exclude group: 'org.apache.httpcomponents'
    }

And then I was able to launch the app in the Nexus 5X Andriod 6.0 emulator, the app failed with a different error:

Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lorg/apache/http/conn/ssl/DefaultHostnameVerifier;
 at microsoft.exchange.webservices.data.core.EwsSSLProtocolSocketFactory.<clinit>(EwsSSLProtocolSocketFactory.java:84)
 at microsoft.exchange.webservices.data.core.ExchangeServiceBase.createConnectionSocketFactoryRegistry(ExchangeServiceBase.java:244)
 at microsoft.exchange.webservices.data.core.ExchangeServiceBase.initializeHttpClient(ExchangeServiceBase.java:198)
 at microsoft.exchange.webservices.data.core.ExchangeServiceBase.<init>(ExchangeServiceBase.java:174)
 at microsoft.exchange.webservices.data.core.ExchangeService.<init>(ExchangeService.java:3718)
 at domain.test.android.jasonyu.myfirstapp.MainActivity.onButtonGoClick(MainActivity.java:94)
 at java.lang.reflect.Method.invoke(Native Method) 
 at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
 at android.view.View.performClick(View.java:5198) 
 at android.view.View$PerformClick.run(View.java:21147) 
 at android.os.Handler.handleCallback(Handler.java:739) 
 at android.os.Handler.dispatchMessage(Handler.java:95) 
 at android.os.Looper.loop(Looper.java:148) 
 at android.app.ActivityThread.main(ActivityThread.java:5417) 
 at java.lang.reflect.Method.invoke(Native Method) 
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
Caused by: java.lang.ClassNotFoundException: Didn't find class "org.apache.http.conn.ssl.DefaultHostnameVerifier" on path: DexPathList[[zip file "/data/app/domain.test.android.jasonyu.myfirstapp-2/base.apk"],nativeLibraryDirectories=[/data/app/domain.test.android.jasonyu.myfirstapp-2/lib/x86, /vendor/lib, /system/lib]]
 at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
 at microsoft.exchange.webservices.data.core.EwsSSLProtocolSocketFactory.<clinit>(EwsSSLProtocolSocketFactory.java:84) 
 at microsoft.exchange.webservices.data.core.ExchangeServiceBase.createConnectionSocketFactoryRegistry(ExchangeServiceBase.java:244) 
 at microsoft.exchange.webservices.data.core.ExchangeServiceBase.initializeHttpClient(ExchangeServiceBase.java:198) 
 at microsoft.exchange.webservices.data.core.ExchangeServiceBase.<init>(ExchangeServiceBase.java:174) 
 at microsoft.exchange.webservices.data.core.ExchangeService.<init>(ExchangeService.java:3718) 
 at domain.test.android.jasonyu.myfirstapp.MainActivity.onButtonGoClick(MainActivity.java:94) 

[DevilGeek]

This is very annoying, did anyone manage to make it work on android ?

i tried
dependencies {
compile 'com.microsoft.ews-java-api:ews-java-api:2.0'
}
but it give me "*Didn't find class "org.apache.http.client.protocol.HttpClientContext" *"

and i tried

compile group: 'org.apache.httpcomponents' , name: 'httpclient-android' , version: '4.3.5.1'
compile ('com.microsoft.ews-java-api:ews-java-api:2.0') {
exclude group: 'org.apache.httpcomponents'
}

but i get
"Failed resolution of: Lorg/apache/http/client/protocol/HttpClientContext;"

[Lugo239]

I cant get the api working properly.

The "Didn't find class "org.apache.http.client.protocol.HttpClientContext" issue is omnipresent.
When i try to fix it with another httpclient version like for example 4.4.1 or 4.3.5.1 i get
"Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lorg/apache/http/conn/ssl/DefaultHostnameVerifier;"

Would be awesome if somebody could help.

[DevilGeek]

i got it working using the following

https://github.com/alipov/ews-android-api

[Lugo239]

Hi DevilGeek!
Thanks for the fast answer.
Can you post your build.gradle file (the relevant parts)?
I will check out your link.

[DevilGeek]

Just read the link in my previous post.
nothing really relevant in my build.gradle

compile files('libs/ews-android-api.jar')
compile 'joda-time:joda-time:2.8'

[Lugo239]

Created and compiled the ews-android-api.jar.
I can start the application and iam able to send the request thanks DevilGeek!

EDIT:
It works! DevilGeek you are my man! Thanks for saving me!

[DilbagSandhu]

hi lugo239
can you please tell me how to create and compile the ems-android-api.jar, i dont know how to and where to run the commands they written at: https://github.com/alipov/ews-android-api

[FatmaMM]

do u find any way to get it ?? @DilbagSandhu

[DilbagSandhu]

it was long ago. I never tried after that.