ios - NSNumberFormatter setPerMillSymbol being ignored

Question

the following code doesn't work as intended:

//[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
formatter.maximumFractionDigits = 2;
formatter.minimumFractionDigits = 2;
formatter.decimalSeparator = @",";
formatter.perMillSymbol = @".";
NSString *resultText = [formatter stringFromNumber:[NSNumber numberWithFloat:1234.10]];

The result string is then 1234,10, but the perMillSymbol is ignored. When I uncomment the setNumberStyle call, the result is 1,234,10 - ignoring my set perMillSymbol.

What's wrong here?

Answer 1

如果您尝试将数字格式化为1.234,10，请尝试以下操作：

NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
[formatter setFormatterBehavior:NSNumberFormatterBehavior10_4];
formatter.maximumFractionDigits = 2;
formatter.minimumFractionDigits = 2;
formatter.decimalSeparator = @",";
formatter.groupingSeparator = @".";
NSString *resultText = [formatter stringFromNumber:[NSNumber numberWithFloat:1234.10]];

每磨机符号用于表示十分之一的百分比 (0.001)，与十进制格式的数字无关。