OC各种数据类型之间的转换方法
2016-03-16 16:37
495 查看
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 plain copy
print?
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? NSString *a = [[NSString alloc] initWithString : @"5, 10, 2, 0, 0, 0.01, 1, 0.05, 0, 0, 0"]; NSArray *bullteData = [a componentsSeparatedByString:@","]; [a release]; for (int i = 0; i < [bullteData count]; i++) { NSLog(@"%f",[[NSString stringWithFormat:@"%@",[bullteData objectAtIndex:i]] floatValue]); }
[plain] view plain copy
print?
NSString *a = [[NSString alloc] initWithString : @"5, 10, 2, 0, 0, 0.01, 1, 0.05, 0, 0, 0"]; NSArray *bullteData = [a componentsSeparatedByString:@","]; [a release]; for (int i = 0; i < [bullteData count]; i++) { NSLog(@"%f",[[NSString stringWithFormat:@"%@",[bullteData objectAtIndex:i]] floatValue]); }
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