使用retrofit与Rxjava结合出的错误：java.lang.IllegalStateException: Fatal Exception thrown on Scheduler.Worker

使用Retrofit与Rxjava报的错误：

Process: com.example.john.retrofit2, PID: 14741
                                                                            java.lang.IllegalStateException: Fatal Exception thrown on Scheduler.Worker thread.
                                                                                at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:62)
                                                                                at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
                                                                                at java.util.concurrent.FutureTask.run(FutureTask.java:237)
                                                                                at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:152)
                                                                                at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:265)
                                                                                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
                                                                                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
                                                                                at java.lang.Thread.run(Thread.java:841)
                                                                             Caused by: java.lang.NoSuchMethodError: retrofit2.Response.isSuccess
                                                                                at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$SimpleCallAdapter$1.call(RxJavaCallAdapterFactory.java:160)
                                                                                at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$SimpleCallAdapter$1.call(RxJavaCallAdapterFactory.java:158)
                                                                                at rx.internal.operators.OperatorMap$1.onNext(OperatorMap.java:54)
                                                                                at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:113)
                                                                                at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:92)
                                                                                at rx.Observable$2.call(Observable.java:162)
                                                                                at rx.Observable$2.call(Observable.java:154)
                                                                                at rx.Observable$2.call(Observable.java:162)
                                                                                at rx.Observable$2.call(Observable.java:154)
                                                                                at rx.Observable.unsafeSubscribe(Observable.java:8098)
                                                                                at rx.internal.operators.OperatorSubscribeOn$1$1.call(OperatorSubscribeOn.java:62)
                                                                                at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
                                                                                at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422) 
                                                                                at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
                                                                                at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:152) 
                                                                                at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:265) 
                                                                                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 
                                                                                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 
                                                                                at java.lang.Thread.run(Thread.java:841) 

解决方法
首先来看我这个项目build.gradle中的依赖：

compile 'com.android.support:appcompat-v7:23.1.0'
    compile 'com.android.support:design:23.1.0'
    compile 'com.squareup.retrofit2:converter-gson:2.0.2'
    compile 'com.google.code.gson:gson:2.6.1'
    compile 'com.squareup.okhttp3:okhttp:3.2.0'
    compile 'io.reactivex:rxjava:1.1.0'
    compile 'io.reactivex:rxandroid:1.1.0'
//    compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'

    compile 'com.squareup.retrofit2:adapter-rxjava:2.0.0-beta4'
    compile 'com.squareup.retrofit2:retrofit:2.1.0'

大家发现了没有，最后2个依赖版本不一致，刚刚上面所报的错误就是因为这个版本不一致造成的，所以我们的解决方案就是：让他们所依赖的版本一致，就可以了

把compile 'com.squareup.retrofit2:adapter-rxjava:2.0.0-beta4'依赖换成
compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'就可以了

这个版本不一致出现错误，可能是因为它版本不同，里面的有些API不一致造成的，改过之后的依赖

compile 'com.android.support:appcompat-v7:23.1.0'
    compile 'com.android.support:design:23.1.0'
    compile 'com.squareup.retrofit2:converter-gson:2.0.2'
    compile 'com.google.code.gson:gson:2.6.1'
    compile 'com.squareup.okhttp3:okhttp:3.2.0'
    compile 'io.reactivex:rxjava:1.1.0'
    compile 'io.reactivex:rxandroid:1.1.0'
    compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'
    compile 'com.squareup.retrofit2:retrofit:2.1.0'

这样运行项目，就OK了，问题解决