需求 手机号号码 15288888888 ------->152 8888 8888 银行卡号 8888888888888888888 ----->8888 8888 8888 8888 888
实现 在UITextFiled输入时候就实现号码格式化
在UITextField代理方法 shouldChangeCharactersInRange 实现即可,可以写法分类 就可以全局使用,方便快捷
NSString *text = [textFieldtext];
// 只能输入数字
NSCharacterSet *characterSet = [NSCharacterSetcharacterSetWithCharactersInString:@"0123456789\b"];
string = [string stringByReplacingOccurrencesOfString:@" "withString:@""];
if ([stringrangeOfCharacterFromSet:[characterSetinvertedSet]].location !=NSNotFound)
{
returnNO;
}
text = [text stringByReplacingCharactersInRange:rangewithString:string];
text = [text stringByReplacingOccurrencesOfString:@" "withString:@""];
// 如果是电话号码格式化，需要添加这三行代码 如果是判断银行卡只要把这三句注释即可
NSMutableString *temString = [NSMutableStringstringWithString:text];
[temString insertString:@" "atIndex:0];
text = temString;
NSString *newString =@"";
while (text.length >0)
{
NSString *subString = [textsubstringToIndex: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:[characterSetinvertedSet]];
// 号码14银行卡 24
if (newString.length >=14)
{
returnNO;
}
[textField setText:newString];
returnNO;
这里参考了 http://blog.csdn.net/rlpeng/article/details/21292059 这边文章， 感谢分享 我这里写成了分类,可以直接拷贝使用
demo地址：后期更新·
