ios 来自 NSString 的子字符串
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时间：2020-08-30 22:13:15 来源:igfitidea点击:
Substring from NSString
提问by SumiSadiq
I am using NSStringand I want to get a substring of it that contains the first 20 characters of my string. How can I do that?
我正在使用NSString并且我想获取它的一个子字符串，其中包含我的字符串的前 20 个字符。我怎样才能做到这一点？
回答by Bijoy Thangaraj
You can use substringToIndex.
您可以使用substringToIndex.
NSString *mystring = @"This is a test message having more than 20 characters";
NSString *newString = [mystring substringToIndex:20];
NSLog(@"%@", newString);
回答by Inder Kumar Rathore
NSString *str = @"123456789012345678901234";
NSString *subStr = [str substringWithRange:NSMakeRange(0, 20)];
回答by Rushi
NSString *string = @"I am having a simple question.I am having NSString and i want a substring of it that contains first 20 ";
NSString *first20CharString = [string substringToIndex:20];
回答by P.J
Try this
尝试这个
NSString *string = @"This is for testing substring from string";
NSInteger intIndex = 20;
NSLog(@"%@", [string substringToIndex:intIndex]);
Hope it helps you..
希望能帮到你。。
回答by Nishant B
Check with below:
检查以下：
NSString *strTmp = @"This is test string to check substring.";
NSInteger intIdx = 20;
NSLog(@"%@", [strTmp substringToIndex:intIdx]);
It will be helpful to you.
它会对你有所帮助。
Cheers!
干杯!
