我试图从react-native运行android应用程序。我已经尝试过使用＆＃34; react-native init＆＃34;带来的标准应用程序。和＃34; Hello world＆＃34;来自react-native github的应用程序，但我在模拟器和设备上都得到了这个错误堆栈：
09-16 14:21:23.334 3441 3486 E AndroidRuntime: FATAL EXCEPTION: OkHttp Dispatcher
09-16 14:21:23.334 3441 3486 E AndroidRuntime: Process: com.deleteme, PID: 3441
09-16 14:21:23.334 3441 3486 E AndroidRuntime: java.lang.IllegalStateException: closed
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at okhttp3.internal.http.Http1xStream$FixedLengthSource.read(Http1xStream.java:374)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at okio.Buffer.writeAll(Buffer.java:993)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at okio.RealBufferedSource.readByteArray(RealBufferedSource.java:106)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at okhttp3.ResponseBody.bytes(ResponseBody.java:128)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at okhttp3.ResponseBody.string(ResponseBody.java:154)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at com.facebook.react.devsupport.DevServerHelper$3.onResponse(DevServerHelper.java:301)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at okhttp3.RealCall$AsyncCall.execute(RealCall.java:126)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
09-16 14:21:23.334 3441 3486 E AndroidRuntime: at java.lang.Thread.run(Thread.java:818)
在设备本身的应用程序试图启动，但崩溃的消息＆＃34;不幸的是，deleteme已停止＆＃34;。根据{{3}}帖子，我检查了android / app / build.gradle中的enableProguardInReleaseBuilds，它是＆＃34; false＆＃34;默认情况下。我怎样才能使它发挥作用？