错误代码：
com.avos.avoscloud.im.v2.AVIMException: com.avos.avoscloud.im.v2.AVIMException: com.avos.avoscloud.im.v2.AVIMException: APP_NOT_AVAILABLE
at com.avos.avoscloud.im.v2.callback.AVIMClientCallback.internalDone0(AVIMClientCallback.java:16)
at com.avos.avoscloud.im.v2.callback.AVIMClientCallback.internalDone0(AVIMClientCallback.java:11)
at com.avos.avoscloud.AVCallback.internalDone(AVCallback.java:18)
at com.avos.avoscloud.im.v2.AVIMClient$1.execute(AVIMClient.java:124)
at com.avos.avoscloud.im.v2.AVIMBaseBroadcastReceiver.onReceive(AVIMBaseBroadcastReceiver.java:27)
at android.support.v4.content.LocalBroadcastManager.executePendingBroadcasts(LocalBroadcastManager.java:297)
at android.support.v4.content.LocalBroadcastManager.access$000(LocalBroadcastManager.java:46)
at android.support.v4.content.LocalBroadcastManager$1.handleMessage(LocalBroadcastManager.java:116)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5113)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609)
at dalvik.system.NativeStart.main(Native Method)

error:java.io.IOException: UnknownHostException exception: Unable to resolve host "api.leancloud.cn": No address associated with hostname
服务不能用了？

不好意思，可以用了。是这边断网了

好的。谢谢。我又遇到一个问题，就是重复进入聊天界面，接收消息的时候会收到重复的消息，是什么原因呢？