Why am I still getting java.lang.NoClassDefFoundError: android.support.v7.appcompat.R$attr? -


so i'm developing cheesy app make posts train myself in android before work on firm's real app project. i'm running bug that's giving me difficult time though.

i given list of library dependencies use, , have build.gradle file set load them in. syncs fine, assume it's done right best of knowledge:

dependencies {     compile filetree(dir: 'libs', include: ['*.jar'])     compile 'com.android.support:appcompat-v7:22.1.1'     compile 'com.google.android.gms:play-services:7.3.0'     compile 'com.squareup.okhttp:okhttp:2.3.0'     compile 'com.squareup.retrofit:retrofit:1.7.0'     compile 'com.google.code.gson:gson:2.3'     compile 'com.squareup.dagger:dagger:1.2.2'     compile 'com.squareup.dagger:dagger-compiler:1.2.2'     compile 'com.squareup.picasso:picasso:2.5.2'     compile 'com.android.support:recyclerview-v7:22.1.1'     compile 'com.squareup:otto:1.3.7'     compile 'com.path:android-priority-jobqueue:1.1.2'     compile 'io.realm:realm-android:0.80.1'     compile 'com.jakewharton:butterknife:6.1.0'     compile 'com.android.support:multidex:1.0.0'     compile 'com.android.support:appcompat-v7:22.1.1' }

and have installed android support library , repository: sdk manager proof i've installed need

and yet still try , launch app , following stack trace:

java.lang.noclassdeffounderror: android.support.v7.appcompat.r$attr         @ android.support.v7.app.appcompatdelegateimplv7.ensuresubdecor(appcompatdelegateimplv7.java:286)         @ android.support.v7.app.appcompatdelegateimplv7.setcontentview(appcompatdelegateimplv7.java:246)         @ android.support.v7.app.appcompatactivity.setcontentview(appcompatactivity.java:106)         @ com.anglersatalas.twitstagram.mainactivity.oncreate(mainactivity.java:23)         @ android.app.activity.performcreate(activity.java:5451)         @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1093)         @ android.app.activitythread.performlaunchactivity(activitythread.java:2298)         @ android.app.activitythread.handlelaunchactivity(activitythread.java:2392)         @ android.app.activitythread.access$900(activitythread.java:169)         @ android.app.activitythread$h.handlemessage(activitythread.java:1280)         @ android.os.handler.dispatchmessage(handler.java:102)         @ android.os.looper.loop(looper.java:146)         @ android.app.activitythread.main(activitythread.java:5487)         @ java.lang.reflect.method.invokenative(native method)         @ java.lang.reflect.method.invoke(method.java:515)         @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:1283)         @ com.android.internal.os.zygoteinit.main(zygoteinit.java:1099)         @ dalvik.system.nativestart.main(native method)

everywhere else on stack overflow i've seen has solution adding appcompat v7 libraries on android website, i've demonstrated i've done above. can't figure out life of me why still happening. looking @ stack trace, breaks in mainactivity @ setcontentview() method:

package com.anglersatalas.twitstagram;  import android.os.bundle; import com.anglersatalas.twitstagram.r; import android.support.v7.app.appcompatactivity; import android.view.menu; import android.view.menuitem; import android.widget.textview;  import com.anglersatalas.twitstagram.api.postservice; import com.anglersatalas.twitstagram.models.post;  import java.util.list;  import retrofit.restadapter;   public class mainactivity extends appcompatactivity{      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(com.anglersatalas.twitstagram.r.layout.activity_main);          textview tv =  (textview)findviewbyid(com.anglersatalas.twitstagram.r.id.textview);          restadapter adapter = new restadapter.builder()                 .setendpoint("10.0.0.248/testserver/backend/web")                 .build();          postservice service = adapter.create(postservice.class);         list<post> list = service.getposts();         string str = "";         for(post p : list){             str += string.format("%s\n", p);         }         tv.settext(str);      }      ...  }

clicking through class file calling method throws exception, shows can't find 'android.support.v7.appcompat.r;':

enter image description here

my coworkers , @ loss. suggestions how remedy this?

i spent hours same issue, , able resolved...

it turns out on dex limit, did have multidexenabled true in build.gradle file under defaultconfig, looks missing few other things pre 5.0 devices..

defaultconfig {  ...         multidexenabled true  ... }

i first checked method count this: https://github.com/mihaip/dex-method-counts

i @ 67952 methods...

i updated build.gradle add multidex support 

dependencies { ... compile 'com.android.support:multidex:1.0.0' ... }

i updated application (we have our own) extend multidexapplication

package com.me.myapp ... public class application extends multidexapplication {}

here 2 links documentation used correctly implement multidex: https://developer.android.com/tools/building/multidex.html https://developer.android.com/reference/android/support/multidex/multidexapplication.html

make sure application in manifest points custom multidex application

<application ... android:name="com.me.myapp.application" />

-

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