- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
NSMutableString * futureString = [NSMutableString stringWithString:textField.text];
[futureString insertString:string atIndex:range.location];
NSInteger flag=0;
const NSInteger limited = 2;//小数点后需要限制的个数
for (int i = futureString.length-1; i>=0; i--) {
if ([futureString characterAtIndex:i] == '.') {
if (flag > limited) {
return NO;
}
break;
}
flag++;
}
return YES;
}
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作者：Frank_春儿
来源：CSDN
原文：https://blog.csdn.net/qq_29284809/article/details/50732004
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