NSNumber轉(zhuǎn)NSString:
假設(shè)現(xiàn)有一NSNumber的變量A，要轉(zhuǎn)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(zhuǎn)換
NSString *tempA = @"123";
NSString *tempB = @"456";

1，字符串拼接
NSString *newString = [NSString stringWithFormat:@"%@%@",tempA,tempB];

2，字符轉(zhuǎn)int
int intString = [newString intValue];

3，int轉(zhuǎn)字符
NSString *stringInt = [NSString stringWithFormat:@"%d",intString];

4，字符轉(zhuǎn)float
float floatString = [newString floatValue];

5，float轉(zhuǎn)字符
NSString *stringFloat = [NSString stringWithFormat:@"%f",intString];
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[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]);