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OC各种数据类型之间的转换方法

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];

///////
[plain] view plaincopyprint?
  1. NSString *a = [[NSString alloc] initWithString : @"5, 10, 2, 0, 0, 0.01, 1, 0.05, 0, 0, 0"];
  2. NSArray *bullteData = http://www.mamicode.com/[a componentsSeparatedByString:@","]; 
  3. [a release]; 
  4. for (int i = 0; i < [bullteData count]; i++) { 
  5. NSLog(@"%f",[[NSString stringWithFormat:@"%@",[bullteData objectAtIndex:i]] floatValue]);
[plain] view plain copy
 print?
  1. NSString *a = [[NSString alloc] initWithString : @"5, 10, 2, 0, 0, 0.01, 1, 0.05, 0, 0, 0"];  
  2. NSArray *bullteData = [a componentsSeparatedByString:@","];  
  3. [a release];  
  4. for (int i = 0; i < [bullteData count]; i++) {  
  5. NSLog(@"%f",[[NSString stringWithFormat:@"%@",[bullteData objectAtIndex:i]] floatValue]);  
  6. }  

OC各种数据类型之间的转换方法