objective c - NSNumberFormatterCurrencyStyle where decimals are only shown when period is used on the keypad -

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I am a new obj c programmer, and I do not know what is the status of switching to the following scenario:

I have UITe I am using xtField as the input field. Part of my code: 

  NSNumberFormatter * numberFormatter = [[NSNumberFormatter alloc] init]; [NumberFormatter Settlement Style: NSNumberFormatterCurrencyStyle]; Cell.input = [[UITextField alloc] initWithFrame: CGRectMake (0, 6, cell.frame.yize.width, 80)]; Cell.input.currencyNumberFormatter = numberFormatter;   
 Do I have to use the UITextField method Will be in the condition:  
     
  •  (zero) textFieldDidBeginEditing: (UITextField *) textField {}   
     Any indication which you can provide is really appreciated Will go. Thanks!   
     
     
     Set the currency code Set minimum and maximum degrees  
      [ NumberFormatter setCurrencyCode: @ "USD"]; [Number format maximum fracturedegit: 2]; [Number formatting set minimum fracturing data: 0];

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