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NSString *tempA = @"123"; NSString *tempB = @"456"; |
1，字符串拼接
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NSString *newString = [NSString stringWithFormat:@"%@%@",tempA,tempB]; |
2，字符转int
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int intString = [newString intValue]; |
3，int转字符
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NSString *stringInt = [NSString stringWithFormat:@"%d",intString]; |
4，字符转float
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float floatString = [newString floatValue]; |
5，float转字符
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NSString *stringFloat = [NSString stringWithFormat:@"%f",intString]; |
6.截取字符串
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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
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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
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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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