The use of Objective-c learning-nsstring

0. Determine if there are any characters in the string

if ([Roadtitlelab.text rangeofstring:@ "Qingjoin"].location!=nsnotfound)//Determine if Roadtitlelab.text contains Qingjoin

} else {

NSLog (@ "no");

? }

1. Intercepting strings

nsstring*string [email protected] "SDFSFSFSADFSDF";
string = [strings substringtoindex:7];//after intercept of subscript 7
NSLog (@ "Intercept value:%@", string);
[String substringfromindex:2];//to intercept strings before subscript 2
NSLog (@ "Intercept value:%@", string);


2. Matching strings
nsstring*string [email protected] "SDFSFSFSADFSDF";
Nsrangerange = [stringrangeofstring:@ "F"];//matches the resulting subscript
NSLog (@ "rang:%@", Nsstringfromrange (range));
strings = [string substringwithrange:range];//Intercept range class
NSLog (@ "Intercept value:%@", string);


3. Separating strings
nsstring*string [email protected] "SDFSFSFSADFSDF";

Nsarray *array = [string componentsseparatedbystring:@ "A"]; An array of 2 elements separated from character a
NSLog (@ "array:%@", array); The result is Adfsfsfs and DFSDF.

The use of Objective-c learning-nsstring