113，字符串查找

来源：互联网发布：婴儿面膜淘宝授权书编辑：程序博客网时间：2024/06/06 12:50

#import <Foundation/Foundation.h>

int main(int argc,const char * argv[]) {

//1，判断是否以什么开头

NSString *str =@"http://www.baidu.com/img/lnj.gif";

if ([str hasPrefix:@"http://"]) {

NSLog(@"是一个URL！");

}else{

NSLog(@"不是一个URL！");

}

//2，判断是否以什么结尾

if ([str hasSuffix:@".gif"]) {

NSLog(@"是一张图片");

}else{

NSLog(@"不是一张图片！");

}

//3，判断字符串是否有包含什么

只要str包含某字符串，那么，就会返回该字符串仔str中的起始位置location和长度length

若没有包含，那么，location = NSNotFound,length = 0

NSRange range = [str rangeOfString:@"baidu"];

if(range.location ==NSNotFound){

NSLog(@"没找到");

}else{

NSLog(@"location = %lu,length = %lu",range.location,range.length);

}

return 0;

}

//2015-12-19 22:45:58.622 8，字符串查找[3327:247134]是一个URL！

//2015-12-19 22:45:58.623 8，字符串查找[3327:247134]是一张图片

//2015-12-19 22:45:58.623 8，字符串查找[3327:247134] location = 11,length = 5

//Program ended with exit code: 0

0 0