標籤:
http://blog.csdn.net/fanjunxi1990/article/details/21536189
直接貼代碼了
[python] view plaincopy
- #import "ViewController.h"
-
- @interface ViewController ()
-
- @end
-
- @implementation ViewController
-
- - (void)viewDidLoad
- {
- [super viewDidLoad];
- NSLog(@"----%@---",[self decimalwithFormat:@"0.0000" floatV:0.334]);
- NSLog(@"----%@---",[self decimalwithFormat:@"0.0000" floatV:0.334569]);
- NSLog(@"----%@---",[self decimalwithFormat:@"0.0000" floatV:0.334519]);
- }
-
- - (void)didReceiveMemoryWarning
- {
- [super didReceiveMemoryWarning];
- // Dispose of any resources that can be recreated.
- }
-
- //格式話小數 四捨五入類型
- - (NSString *) decimalwithFormat:(NSString *)format floatV:(float)floatV
- {
- NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
-
- [numberFormatter setPositiveFormat:format];
-
- return [numberFormatter stringFromNumber:[NSNumber numberWithFloat:floatV]];
- }
-
- @end
最後控制台列印結果:
[python] view plaincopy
- 2014-03-19 15:44:45.262 TestNumberFormatter[3056:60b] ----0.3340---
- 2014-03-19 15:44:45.263 TestNumberFormatter[3056:60b] ----0.3346---
- 2014-03-19 15:44:45.263 TestNumberFormatter[3056:60b] ----0.3345---
iOS float小數四捨五入