使用NSNumberFormatter将NSNumber转换为NSString | NumberFormatter将NSNumber转换为NSStr

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问题描述

我将 NSNumber 转换为 NSString ，假设在此示例中，theindex 1000000

  NSNumber * firstNumber = [tempDict objectForKey：@theindex]; 
 NSString * convertNumber = [firstNumber stringValue];

返回 NSString 1000000 p>

我想将字符串的值设置为1,000,000。

我不关心本地化，但从其他问题了解，应该实现 NSNumberFormatter 。

解决方案

下面是使用NSNumberFormatter的标准格式化风格的示例：

  NSNumber * firstNumber = [NSNumber numberWithInt：123456789]; 
 NSNumberFormatter * formatter = [[NSNumberFormatter alloc] init]; 
 [formatter setNumberStyle：NSNumberFormatterDecimalStyle]; 
 NSString * convertNumber = [formatter stringForObjectValue：firstNumber]; 
 NSLog（@value：％@，convertNumber）;

您可以参考的其他示例：

I am converting an NSNumber to an NSString assuming in this example that the selected key in "theindex" is 1000000

NSNumber  *firstNumber = [tempDict objectForKey:@"theindex"];
NSString *convertNumber = [firstNumber stringValue];

Returning the NSString "1000000"

I would like the string's value to be "1,000,000".

I am not concerned with localization, but understand from other questions that NSNumberFormatter should be implemented. I am not sure how to accomplish this?

解决方案

Here is an example using a standard formatting style of NSNumberFormatter:

NSNumber *firstNumber = [NSNumber numberWithInt:123456789];
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
NSString *convertNumber = [formatter stringForObjectValue:firstNumber];
NSLog(@"value : %@", convertNumber);

Other examples you can reference at:
http://iosdevelopertips.com/cocoa/formatting-numbers-nsnumberformatter-examples.html

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