安卓的点分十进制ip，转换成为int

private void myFunc() {
String ip = "192.168.20.160";
String[] zu = ip.split("\\.");
Log.d("wangjie" , "String 2 = " + zu[1]);
}

private long ipstrAddrToInt(String ip){
String[] tmp = ip.split("\\.");
long tmpInt = 0;
for(int i = 0; i < 4; i++){
tmpInt += (Integer.parseInt(tmp[i]) << i);
}

return tmpInt;
}