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我开发了使用Smack 4.1库的聊天应用程序,该应用程序使用ejabberd服务器进行聊天。Xmpp String utils频繁崩溃应用程序
所有的聊天工作正常,但有时应用程序崩溃与以下错误,无法理解为什么这经常发生?
以下错误从crashlytics获得: -
Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.indexOf(int)' on a null object reference
at org.jxmpp.util.XmppStringUtils.parseBareJid(XmppStringUtils.java:117)
at org.jivesoftware.smack.roster.Roster$RosterPushListener.handleIQRequest(Roster.java:1386)
at org.jivesoftware.smack.AbstractXMPPConnection$2.run(AbstractXMPPConnection.java:1051)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:761)
下面的代码用于连接和登录到ejabberd: -
XMPPTCPConnectionConfiguration.Builder config = XMPPTCPConnectionConfiguration.builder();
config.setSecurityMode(ConnectionConfiguration.SecurityMode.disabled);
config.setServiceName(Constants.HOST);
config.setPort(Constants.PORT);
config.setHost(Constants.HOST);
config.setDebuggerEnabled(true);
config.setSendPresence(true);
config.setUsernameAndPassword(strUsername + "@" + Constants.HOST, strPassword);
SASLAuthentication.blacklistSASLMechanism("SCRAM-SHA-1");
SASLAuthentication.blacklistSASLMechanism("DIGEST-MD5");
SASLAuthentication.unBlacklistSASLMechanism("PLAIN");
objXmpptcpConnection = new XMPPTCPConnection(config.build());
objXmpptcpConnection.setUseStreamManagement(true);
objXmpptcpConnection.setUseStreamManagementResumption(true);
try {
objXmpptcpConnection.connect();
System.out.println("Connected to===>" + objXmpptcpConnection.getHost());
objXmpptcpConnection.login();
} catch (XMPPException e) {
e.printStackTrace();
} catch (SmackException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
有我错过了它或请建议的解决方案的任何设置避免这个问题?
我没有使用任何与roster相关的功能。那么,有没有任何设置可以关闭Smack的功能 –