2dx学习笔记-----类型转换(CCstring int string char UTF-8互转)
2014-03-09 17:49
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在做数据转换时,最好包含以下头文件
#include <iostream>
#include <cmath>
#include <string>
#include <sstream>
USING_NS_CC;
using namespace std;
在2d-x中,也有一个格式刷:CCString(数据转换常常找她做中间人)
那么我们要转换类型,
可先将起始数据类型刷成CCString然后再转成目的数据类型,
这个方法比较方便且实用。
int 转 CCstring
int num=5;
CCString* ns=CCString::createWithFormat("%d",num);
CCstring 转 int
int px = ns->intValue();//将CCString
转换为int的方法,转成float类型有 floatValue()
======================================
CCString 转 char
const char *string= ns->getCString();
char 转 CCString
CString.Format(”%s”,char *)//char 转cstring
CCString* ns=CCString::createWithFormat("%s",char
*);
======================================
string 转 char
const char *string=std::string("STRING").c_str();
char 转
string
string s(char *);
======================================
string 转 int
std::string s("1234");
int n = std::atoi(s.c_str());//函数原型int atoi(const
char *);
int 转 string
int a=3;
CCString* ns=CCString::createWithFormat("%d",a);
string s=ns->m_sString;
======================================
string 转 CCString
std::string str = "123";
CCString* ns=CCString::createWithFormat("%s",str.c_str());
CCString 转
string
std::string s=
ns->m_sString;//ns是一个CCString*类型
======================================
char 转 int
char *buf
= "1122";
int n = std::atoi(buf);
int 转 char
int a=3;
CCString* ns=CCString::createWithFormat("%d",a);
const char* s=ns->getCString();
这里额外提一下,IOS在参与跨平台用到的编码格式转换
const char* char_url; const char* char_parameter;
格式刷:
NSString *endstr=[NSString stringWithFormat:@"%@?%@",char_url,char_parameter];
转换编码格式为utf-8
endstr=[endstr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];//解决中文编码
NSString 转 char*
const char *char_gurl = [endstr cStringUsingEncoding:NSUTF8StringEncoding];
char* 转 NSString
const char* gameObject;
NSString *char_gameObject = [[NSString alloc] initWithCString:(const char*)gameObject
encoding:NSUTF8StringEncoding];
char* 转 URL
const char* url;
NSString *char_url = [[NSString alloc] initWithCString:(const char*)url
encoding:NSUTF8StringEncoding];
NSURL* url=[NSURL URLWithString:char_url];
#include <iostream>
#include <cmath>
#include <string>
#include <sstream>
USING_NS_CC;
using namespace std;
在2d-x中,也有一个格式刷:CCString(数据转换常常找她做中间人)
那么我们要转换类型,
可先将起始数据类型刷成CCString然后再转成目的数据类型,
这个方法比较方便且实用。
int 转 CCstring
int num=5;
CCString* ns=CCString::createWithFormat("%d",num);
CCstring 转 int
int px = ns->intValue();//将CCString
转换为int的方法,转成float类型有 floatValue()
======================================
CCString 转 char
const char *string= ns->getCString();
char 转 CCString
CString.Format(”%s”,char *)//char 转cstring
CCString* ns=CCString::createWithFormat("%s",char
*);
======================================
string 转 char
const char *string=std::string("STRING").c_str();
char 转
string
string s(char *);
======================================
string 转 int
std::string s("1234");
int n = std::atoi(s.c_str());//函数原型int atoi(const
char *);
int 转 string
int a=3;
CCString* ns=CCString::createWithFormat("%d",a);
string s=ns->m_sString;
======================================
string 转 CCString
std::string str = "123";
CCString* ns=CCString::createWithFormat("%s",str.c_str());
CCString 转
string
std::string s=
ns->m_sString;//ns是一个CCString*类型
======================================
char 转 int
char *buf
= "1122";
int n = std::atoi(buf);
int 转 char
int a=3;
CCString* ns=CCString::createWithFormat("%d",a);
const char* s=ns->getCString();
这里额外提一下,IOS在参与跨平台用到的编码格式转换
const char* char_url; const char* char_parameter;
格式刷:
NSString *endstr=[NSString stringWithFormat:@"%@?%@",char_url,char_parameter];
转换编码格式为utf-8
endstr=[endstr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];//解决中文编码
NSString 转 char*
const char *char_gurl = [endstr cStringUsingEncoding:NSUTF8StringEncoding];
char* 转 NSString
const char* gameObject;
NSString *char_gameObject = [[NSString alloc] initWithCString:(const char*)gameObject
encoding:NSUTF8StringEncoding];
char* 转 URL
const char* url;
NSString *char_url = [[NSString alloc] initWithCString:(const char*)url
encoding:NSUTF8StringEncoding];
NSURL* url=[NSURL URLWithString:char_url];
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