环境详细信息（操作系统，浏览器信息，SDK 版本）Android，SDK：3.20
登录应用程序并与其他人聊天时的预期行为 用户它工作正常，但一旦我退出应用程序并启动 再次在聊天对话框应用程序崩溃中发送消息。
实际行为应用程序 不应该崩溃。
日志（请使用github gist）
FATAL EXCEPTION: main
Process: com.bhads.ibuy, PID: 7295
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.quickblox.chat.QBAbstractChat.sendMessage(com.quickblox.chat.model.QBChatMessage)' on a null object reference
at com.quickblox.chat.model.QBChatDialog.sendMessage(SourceFile:506)
at com.bhads.ibuy.ui.activity.ChatActivity.sendChatMessage(ChatActivity.java:364)
at com.bhads.ibuy.ui.activity.ChatActivity.onSendChatClick(ChatActivity.java:287)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
重现行为的步骤 - ＆GT;登录申请 - ＆GT;在用户对话框中发送消息 - ＆GT;从应用程序退出（也从后台杀死） - ＆GT;再次开始申请 - ＆GT;转到对话框列表活动并选择对话框 - ＆GT;输入消息并单击发送按钮，APPLICATION IS CRASH
还有其他评论吗？我也做了reloginToChat（用户），它给了 成功回应。并在聊天助手中设置以下属性 类
qbChatService.setDefaultPacketReplyTimeout(150000); //add this
qbChatService.setDefaultConnectionTimeout(150000);
qbChatService.setDefaultAutoSendPresenceInterval(60);
QBChatService.ConfigurationBuilder chatServiceConfigurationBuilder = new QBChatService.ConfigurationBuilder();
chatServiceConfigurationBuilder.setSocketTimeout(60);
chatServiceConfigurationBuilder.setKeepAlive(true);
chatServiceConfigurationBuilder.setUseTls(true);
QBChatService.setConfigurationBuilder(chatServiceConfigurationBuilder);