问如何使用React Native处理if条件中的属性导航

EN

    AsyncStorage.getItem('authorization_code', (err, result) => {
      let token = result;
      axios({
          method: 'post',
          url: 'http://1xx.xx.x.xx:8002/api/auth/me?token=',
          headers: {"Authorization" : `Bearer ${token}`}
      }).then(response => {
          const email = response.data.email;
          const user_type = response.data.user_type;

          AsyncStorage.setItem('USERMAIL',email.toString());
          AsyncStorage.setItem('USERTYPE',user_type.toString());

          if(user_type == 1) {
            this.props.navigation.push('Dashboard');
          }
          else if(user_type == 3) {
            this.props.navigation.push('Dashboard');
          }

      })
});