现象程序崩溃调试报错ASSERT failure in QListT::at: index out of range注意Qt QList等容器类调用at()前务必条件判断.方法QListQStringmyList...;intindex2;//方法1推荐if(index0indexmyList.size()){//安全的}else{qDebug()错误超出范围;}//方法2判断是否为空if(myList.isEmpty()){qDebug()列表为空;}else{//非空}