+(NSString *)getNewBankNumWitOldBankNum:(NSString *)bankNum
{
??? NSMutableString *mutableStr;
??? if (bankNum.length) {
??? mutableStr = [NSMutableString stringWithString:bankNum];
//如果不需要*號把下面for循環(huán)注了即可
??? for (int i = 0 ; i < mutableStr.length; i ++) {
??????? if (i>2&&i
??????????? [mutableStr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"*"];
??????? }
??? }
??????? NSString *text = mutableStr;
??????? NSCharacterSet *characterSet = [NSCharacterSet characterSetWithCharactersInString:@"0123456789\b"];
??????? text = [text stringByReplacingOccurrencesOfString:@" " withString:@""];
??????? NSString *newString = @"";
??????? while (text.length > 0) {
??????????? NSString *subString = [text substringToIndex:MIN(text.length, 4)];
??????????? newString = [newString stringByAppendingString:subString];
??????????? if (subString.length == 4) {
??????????????? newString = [newString stringByAppendingString:@" "];
??????????? }
??????????? text = [text substringFromIndex:MIN(text.length, 4)];
??????? }
??????? newString = [newString stringByTrimmingCharactersInSet:[characterSet invertedSet]];
??? return newString;
??? }
??? return bankNum;
}
