RTLabel和RegexKitLite都要导入第三方库

使用Regexkitlite库进行正则表达式的解析

1.库是使用MRR，如果在ARC工程里面使用这个类，必须在project->build phases->compile resources里面将regexKitLite.m的编译指令设为：-fno-objc-arc

2.需要添加一个依赖库：libicucore.tbd

1.RTLable 富文本类库  替换成超链接

RTLabel *lable = [[RTLabel alloc]initWithFrame:CGRectMake(10, 100, 300, 0)];

lable.delegate = self;

NSString * string = @"@张三123:正则表达式好学么,@李四:给你一个网站:http://www.baidu.com/image/2323_303.jpg,#学习#,电话号码：(025)-69716261";

lable.text =string;

CGSize size =[lable optimumSize];  //计算尺寸

lable.frame = CGRectMake(10, 100, size.width, size.height);

NSString *regex = @"(@\\w+)|(#\\w+#)|(http(s)?://[0-9a-zA-Z./_]+)"; //正则表达式

NSArray *result = [string componentsMatchedByRegex:regex];

for (NSString * str in result) {

NSString * newKeyword = [NSString stringWithFormat:@"<a href='http://www.baidu.com'>%@</a>",str];

string = [string stringByReplacingOccurrencesOfString:str withString:newKeyword]; //替换文本

}

lable.text = string;

2.正则表达式

NSString * str = @"@张三123：你在哪里呀？@李四：我在这！#在哪里# http://www.baidu.com 电话号码：(025)88888888,025-88888888";

NSString * regex = @"@\\w+";

NSString * regex = @"#\\w+#";

NSString * regex = @"(@\\w+)|(#\\w+#)";

NSString * regex = @"http(s)?://[0-9a-zA-Z./_]+";网址

NSString * regex = @"(\\()?(\\d){3}(\\))?(-)?(\\d){8}";//电话号码

NSArray * result = [str componentsMatchedByRegex:regex];

for (NSString * str in result) {

NSLog(@"%@",str);

}