Caused by: java.lang.IllegalStateException: Please login first!

E/AndroidRuntime(12248): java.lang.RuntimeException: Unable to start activity ComponentInfo{cn.com.nggirl.nguser/com.iuxstudio.pumpkincarriagecustom.chat.ChatAty}: java.lang.IllegalStateException: Please login first!

E/AndroidRuntime(12248): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3149)

E/AndroidRuntime(12248): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3248)

E/AndroidRuntime(12248): 	at android.app.ActivityThread.access$1000(ActivityThread.java:197)

E/AndroidRuntime(12248): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1681)

E/AndroidRuntime(12248): 	at android.os.Handler.dispatchMessage(Handler.java:102)

E/AndroidRuntime(12248): 	at android.os.Looper.loop(Looper.java:145)

E/AndroidRuntime(12248): 	at android.app.ActivityThread.main(ActivityThread.java:6872)

E/AndroidRuntime(12248): 	at java.lang.reflect.Method.invoke(Native Method)

E/AndroidRuntime(12248): 	at java.lang.reflect.Method.invoke(Method.java:372)

E/AndroidRuntime(12248): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)

E/AndroidRuntime(12248): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

E/AndroidRuntime(12248): Caused by: java.lang.IllegalStateException: Please login first!

E/AndroidRuntime(12248): 	at com.easemob.chat.core.i.a(Unknown Source)

E/AndroidRuntime(12248): 	at com.easemob.chat.EMConversationManager.getConversation(Unknown Source)

E/AndroidRuntime(12248): 	at com.easemob.chat.EMChatManager.getConversationByType(Unknown Source)

E/AndroidRuntime(12248): 	at com.iuxstudio.pumpkincarriagecustom.chat.ChatAty.onCreate(ChatAty.java:117)

E/AndroidRuntime(12248): 	at android.app.Activity.performCreate(Activity.java:6550)

E/AndroidRuntime(12248): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1120)

E/AndroidRuntime(12248): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3102)