IOS 字符串常用处理详细介绍
时间：2020-12-24 10:58:17|栏目：iOS代码|点击： 次
IOS 字符串常用处理详细介绍
NSString *tempA = @"123"; NSString *tempB = @"456";
1，字符串拼接
NSString *newString = [NSString stringWithFormat:@"%@%@",tempA,tempB];
2，字符转int
int intString = [newString intValue];
3，int转字符
NSString *stringInt = [NSString stringWithFormat:@"%d",intString];
4，字符转float
float floatString = [newString floatValue];
5，float转字符
NSString *stringFloat = [NSString stringWithFormat:@"%f",intString];
6.截取字符串
NSString*string =@"sdfsfsfsAdfsdf"; string = [string substringToIndex:7];//截取下标7之后的字符串 NSLog(@"截取的值为：%@",string); [string substringFromIndex:2];//截取下标2之前的字符串 NSLog(@"截取的值为：%@",string);
7.匹配字符串
NSString*string =@"sdfsfsfsAdfsdf"; NSRangerange = [stringrangeOfString:@"f"];//匹配得到的下标 NSLog(@"rang:%@",NSStringFromRange(range)); string = [string substringWithRange:range];//截取范围类的字符串 NSLog(@"截取的值为：%@",string);
8.分隔字符串
NSString*string =@"sdfsfsfsAdfsdf"; NSArray *array = [string componentsSeparatedByString:@"A"]; //从字符A中分隔成2个元素的数组 NSLog(@"array:%@",array); //结果是adfsfsfs和dfsdf
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