oc 数据类型转换

NSNumber转NSString:

假设现有一NSNumber的变量A，要转换成NSString类型的B

方法如下：

NSNumberFormatter* numberFormatter = [[NSNumberFormatteralloc] init];

B = [numberFormatter stringFromNumber:A];

[numberFormatter release];

 

nsstring和float 还有int之间的转换

 

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];