Recapcha 是可选的，您可以在没有它的情况下使用手机身份验证.

Recapcha is optional you are able to use phone auth without it.

const confirmResult = await auth().signInWithPhoneNumber('+' + phone);
setState(confirmResult);

手动确认代码

if (confirmResult && receivedcode) {
  const user = await confirmResult.confirm(receivedcode);
  if (user) { //do some staff like login }
}

要自动确认，只需将以下代码放入useEffect 函数中即可.

to auto confirm just put the following code inside useEffect function.

unsubscribe = auth().onAuthStateChanged(user => {
   if (user) { //do some staff like login }
});

如果您不知道 auth 来自哪里:

If you dont know where auth comes from:

import auth from '@react-native-firebase/auth';