在 flutter 应用程序中同时使用 Wifi 和 mobile.network

Question

In my flutter app, I need to get information from a device via wifi as a stream. Also I need to keep my google maps online via Mobile inte.net. How can I use both wifi and mobile.network at the same time in my phone. I made a lot of search but I can't find any solution for this.

Answer 1

I don't think it's possible.

The phone would need two network antennas and possibly two network adapters.
You can surely toggle both wifi and mobile data at the same time and they can probably switch frequently to optimize your connection or send requests to different services.
But you can't really use them both at the same time.
(if it's possible) I don't recommend it, since a majority of phones will not support this feature since you need two network antennas.

Answer 2

From the facts as presented, there are a couple of possible solutions, but they aren't perfect and I'm guessing on one as I haven't tested it yet.

One, Google Maps has an offline mode. You can set it up to download maps for offline use. It will show your position on the maps whether you are connected to the inte.net or not, but you won't get traffic data or accurate travel times. Not great, but it can work.

Two, it is possible for a phone to have a WiFi.network and Cellular.network active at the same time, but not in the way everyone seemed to think. Since you are wanting the cellular connection open to have access to the inte.net, I'm assuming this is because the WiFi.network you want to access doesn't have the inte.net. So, reverse the WiFi.network. Setup your phone to be a hotspot.network, it runs its own WiFi.network while maintaining access to the inte.net through its cellular.network. I'm guessing here, but unless phones have some specific security protocol forbidding it I don't know about (which can be the case), your app should be able to contact anything connected to its phone's WiFi while still having access to the inte.net.

If this doesn't work for some reason, you can try a trick I used when I set up a car office. Get a mobile hotspot device. It's a device you can put a cellular SIMM in and it creates a WiFi hotspot. You can connect to it, along with other devices in the car. All will being using WiFi and the hotspot will provide the inte.net access.

If what you are connected to can only create a WiFi.network for you to access and it can't be configured to connect to one itself, you could technically still be able to do it by.network switching. Much harder to do (probably impossible on some devices) and will likely mess with other apps depending on inte.net access, so a real break glass in case of emergency type of situation there.