how to sign in with google react native code example

Example 1: how to add oAuth google signin in react native app

import { GoogleSignin, GoogleSigninButton } from 'react-native-google-signin'; 
render() {  
  <GoogleSigninButton 
  style={{ width: 192, height: 48 }}
  size={GoogleSigninButton.Size.Wide}
  color={GoogleSigninButton.Color.Dark}
  onPress={this._signIn}
  disabled={this.state.isSigninInProgress} />
};

Example 2: google login with react native

_signIn = async () => {
  try {
    await GoogleSignin.hasPlayServices();
    const {accessToken, idToken} = await GoogleSignin.signIn();
    setloggedIn(true);
  } catch (error) {
    if (error.code === statusCodes.SIGN_IN_CANCELLED) {
      // user cancelled the login flow
      alert('Cancel');
    } else if (error.code === statusCodes.IN_PROGRESS) {
      alert('Signin in progress');
      // operation (f.e. sign in) is in progress already
    } else if (error.code === statusCodes.PLAY_SERVICES_NOT_AVAILABLE) {
      alert('PLAY_SERVICES_NOT_AVAILABLE');
      // play services not available or outdated
    } else {
      // some other error happened
    }
  }
};