Android EditText限制输入IP地址

String ip_Regex = "((2[0-5]{2})|(1(\\d){2})|([1-9]\\d){0,1})\\."+"((2[0-5]{2})|(1(\\d){2})|([1-9]\\d){0,1})\\."+"((2[0-5]{2})|(1(\\d){2})|([1-9]\\d){0,1})\\."+"((2[0-5]{2})|(1(\\d){2})|([1-9]\\d){0,1})\\."; 还可以用正则表达式，写得有待优化，但是通俗易懂 哈哈哈