Question

如何使用NSNumberFormatter将数字转换为4273095782到数字4 273 095 782？

我使用这个二极管但没有得到它

NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.numberStyle = kCFNumberFormatterDecimalStyle;
formatter.maximumIntegerDigits = 3;
formatter.minimumFractionDigits = 3;
formatter.groupingSeparator = @" ";
formatter.decimalSeparator = @" ";
NSString *formattedNumber = [formatter stringFromNumber:p];

Answer 1

您需要使用两个属性：setGroupingSize:表示最后3位数字，setSecondaryGroupingSize:表示所有其他数字：

完整的实施将如下：

NSInteger integer = 4273095782;
NSNumberFormatter * formatter = [NSNumberFormatter new];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
[formatter setGroupingSize:3];
[formatter setSecondaryGroupingSize:3];
[formatter setGroupingSeparator:@" "];
NSString * threeSeparated =  [formatter stringFromNumber:@(integer)];
NSLog(@"threeSeparated: %@", threeSeparated);

输出：4 273 095 782

Answer 2

尝试这个小操作：

NSNumber *p = [NSNumber numberWithInt:123456789];

NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.numberStyle = kCFNumberFormatterDecimalStyle;
//     formatter.maximumIntegerDigits = 10;
//     formatter.minimumFractionDigits = 3;
formatter.groupingSeparator = @" ";
formatter.decimalSeparator = @" ";
NSString *formattedNumber = [formatter stringFromNumber:p];

NSLog(@"Formatted:%@", formattedNumber);

希望这会对你有所帮助。在这种情况下，您不需要限制整数位数：）

结果应为：2014-11-27 11:49:39.855 NSNumberFormatter[2399:789883] Formatted:123 456 789

使用NSNumberFormatter将数字转换为格式

2 个答案: