Android: Simulate Wifi in the Emulator

Android: Simulate WiFi in the emulator?

Since this seems to be a popular question, I'll go ahead and add an updated answer. The SDK still doesn't support WiFi emulation, but Genymotion does WiFi by default, so you can use that to develop/test apps with specific WiFi functionality.

Enabling WiFi on Android Emulator

Wifi is not available on the emulator if you are using below of API level 25.

When using an AVD with API level 25 or higher, the emulator provides a
simulated Wi-Fi access point ("AndroidWifi"), and Android
automatically connects to it.

More Information:
https://developer.android.com/studio/run/emulator.html#wifi

Android Studio - Android Emulator Wifi Connected with No Internet

@TheBaj : I figured the problem with this and fixed it. The problem is when you are connected through the router, the androidwifi in your emulator uses the settings and the sets the DNS to something other than 8.8.8.8 which is the google DNS(I presume this is kinda mandatory setting for the androidwifi to gain internet access). But if i change the DNS in my network settings, the google-services plugin which fetches your dependencies especially the one's getting downloaded from jcenter() will not be downloaded and hence your sync will fail which eventually fails your build.

So the trick is that you have your google DNS(8.8.8.8) configured in your network settings after your default router settings - this part takes care of downloading the dependencies from jcenter() and the sync and build succeeds.

Now launch your emulator with emulator @Nexus_5X_API_27 -dns-server 8.8.8.8 command from the terminal which forces the emulator to use 8.8.8.8 as its DNS and the emulator will have internet.

I am working on a react-native app, so for me android studio is needless and i have configured my bashrc to launch the different emulators as follows,

   function emunex5 {
    emulator @Nexus_5X_API_27 -dns-server 8.8.8.8
 }

  function emunex6 {
    emulator @Nexus_6_API_27 -dns-server 8.8.8.8
  }

  function emupix {
    emulator @Pixel_XL_API_27 -dns-server 8.8.8.8
   }

So from one terminal i launch the emulator of my choice and then run the build on another terminal which runs my app on the launched emulator and MY FREAKING EMULATOR HAS INTERNET ACCESS. :)

Try this out and i hope this helps.

Thanks,
Vikram

Simulate no internet on android emulator

You can try airplane mode by tapping the relevant icon in the notification tray:

You might also try hitting F8 to "Toggle Cell Network" in the emulator although you may need to manually reconnect ADB after this procedure.

How to connect android emulator to the internet

I think some of the answers may have addressed this, however obliquely, but here's what worked for me.

Assuming your problem is occurring when you're on a wireless network and you have a LAN card installed, the issue is that the emulator tries to obtain its DNS settings from that LAN card. Not a problem when you're connected via that LAN, but utterly useless if you're on a wireless connection. I noticed this when I was on my laptop.


So, how to fix? Simple: Disable your LAN card. Really. Just go to your Network connections, find your LAN card, right click it and choose disable. Now try your emulator. If you're like me, it suddenly ... works!

Simulate low network connectivity for Android

You can use emulator for this. Take a look at this page: Android Emulator. Pay attention to next two arguments:

1. -netdelay <delay>

   Set network latency emulation to . Default value is none. See
   the table in Network Delay Emulation for supported values.

2. -netspeed <speed>

   Set network speed emulation to . Default value is full. See
   the table in Network Speed Emulation for supported values.

   Speeds for reference in increasing kbps:

                           UP       DOWN
                     -------- ----------
   gsm   GSM/CSD         14.4       14.4
   hscsd HSCSD           14.4       57.6
   gprs  GPRS            28.8       57.6
   umts  UMTS/3G        384.0      384.0
   edge  EDGE/EGPRS     473.6      473.6
   hsdpa HSDPA         5760.0   13,980.0
   lte   LTE         58,000.0  173,000.0
   evdo  EVDO        75,000.0  280,000.0
   full  No limit           ∞          ∞
   

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