限制UItextField只能输入小数点和数字

作者：孟令文

#define NUMBERS @"0123456789."

- (BOOL)textField:(UITextField*)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString*)string

{

if(textField ==self.textField05){

NSCharacterSet*cs;

cs = [[NSCharacterSetcharacterSetWithCharactersInString:NUMBERS]invertedSet];

NSString*filtered = [[stringcomponentsSeparatedByCharactersInSet:cs]componentsJoinedByString:@""];

BOOLbasicTest = [stringisEqualToString:filtered];

if(!basicTest) {

UIAlertView* alert = [[UIAlertViewalloc]initWithTitle:@"提示"

message:@"请输入数字"

delegate:nil

cancelButtonTitle:@"确定"

otherButtonTitles:nil];

[alertshow];

returnNO;

}

returnYES;

}

if(textField ==self.textField06){

NSCharacterSet*cs;

cs = [[NSCharacterSetcharacterSetWithCharactersInString:NUMBERS]invertedSet];

NSString*filtered = [[stringcomponentsSeparatedByCharactersInSet:cs]componentsJoinedByString:@""];

BOOLbasicTest = [stringisEqualToString:filtered];

if(!basicTest) {

UIAlertView* alert = [[UIAlertViewalloc]initWithTitle:@"提示"

message:@"请输入数字"

delegate:nil

cancelButtonTitle:@"确定"

otherButtonTitles:nil];

[alertshow];

returnNO;

}

returnYES;

}

returnYES;

}