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<>概要:本期主要讲解Qt中的QStringList类的常用接口。
<>一、简介
<>头文件:#include<QStringList> <>模块: QT += core <>父类 : QList<QString> <>
功能:根据字面理解的话,QStringList是存储QString的QList.所以你可以认为QStringList是存储类型为QString的列表。学过QStringList,那么QList的使用你也学会了。
<>二、访问方式
<>1.数组方式访问 QStringList _strList = {"I","am","GUGUBO"}; for(int i = 0;i <
_strList.size();i ++) { QString _str = _strList[i]; } <>2.列表方式访问
//使用at()来访问QStringList的元素会比数组方式访问快,因为at()不会进行深拷贝。 QStringList _strList = {"I",
"am","GUGUBO"}; for(int i = 0;i < _strList.size();i ++) { QString _str =
_strList.at(i); } <>3.迭代器方式访问 //需要引入QStringListIterator头文件 QStringList _strList
= {"I","am","GUGUBO"}; QStringListIterator _strListIterator(_strList); while (
_strListIterator.hasNext()) { QString _str = strIterator.next(); }
<>三、常用接口
<>1.初始化、赋值 //初始化 QStringList _strList = {"I","am","GUGUBO"}; //赋值 _strList <<
"OKOK"; <>2.大小、长度 //1.size() QStringList _strList = {"I","am","GUGUBO"}; int
_iLength= _strList.size(); //2.length() _iLength = _strList.length();
//3.count() _iLength = _strList.count(); <>3.包含 //contains() bool _bIS =
strList.contains("I",Qt::CaseSensitive);//_bIs = true <>4.过滤 //filter()
QStringList _strList= {"Ios JK","FGGFJK","GUGUBO"}; QStringList _ssList =
_strList.filter("JK");//_ssList = {"Ios JK","FGGFJK"} //使用contains()接口也可以实现 <>
5.排序 //sort()根据字典序排序 QStringList _strList = {"OPS","JKL","ac"}; _strList.sort(Qt
::CaseSensitive); //_strList = {"ac",'JKL',"OPS"}
<>结尾:本期关于QStringList类的介绍就到这,下期我们学习QVariant类:)