OC各種數據類型之間的轉換方法

NSNumber轉NSString:

假設現有一NSNumber的變量A，要轉換成NSString類型的B

方法如下：

NSNumberFormatter* numberFormatter = [[NSNumberFormatteralloc] init];

B = [numberFormatter stringFromNumber:A];

[numberFormatter release];

nsstring和float 還有int之間的轉換

NSString *tempA = @"123";

NSString *tempB = @"456";

1，字符串拼接

NSString *newString = [NSString stringWithFormat:@"%@%@",tempA,tempB];

2，字符轉int

int intString = [newString intValue];

3，int轉字符

NSString *stringInt = [NSString stringWithFormat:@"%d",intString];

4，字符轉float

float floatString = [newStringfloatValue];

5，float轉字符

NSString *stringFloat = [NSString stringWithFormat:@"%f",intString];