[Fixed]-Cannot connect to localhost API from Android app

To be able to connect your localhost (I assume you are using emulator, I can edit the answer if not)

You need to use the following url:

http://10.0.2.2:8000/

Please run your django development server using the following command.

python manage.py runserver 0.0.0.0:8000

Once you get it running, in a new terminal window find out the ip address of your computer in your wifi/network subnet using the following command

Ipconfig or ifconfig (depends on your OS)

Then change the base url of your api from 127.0.0.1 to the ip you found in the above step. Now connect the android phone in which your app is being tested to your same wifi or network to which the computer running django is connected.
Now you can request and receive response.

127.0.0.1 is the home of your system, your android app will not be able to access that. You need to do it like this.

1)Andoird manifest to put internet permission and network acceess
2) if using Android simulator on local machine. Use 10.0.2.2. alias created by default for 127.0.0.1 i.e losthoast.

Its works for me

The API isn’t working in POSTMAN I tried http://127.0.0.1:8000/api/update/1/ shows an error because it requires some params to be inputted.

in this case, http://newsapi.org/v1/articles?source=bbc-news&sortBy=top&apiKey=8190df9eb51445228e397e4185311a66 the required params have been provided to the API, ie source, sortBy & apiKey

It is possible to call local api with some minor changes.These were the steps I did to hit the local django api from my android app.

• You need to be connected to same network. Better create a hotspot from your pc or laptop and connect android with it
• Create static IP from your system. If you are on VM you may require additional network adapter. Please google it as there are plenty of videos and blogs on the same.
• Host django on the created local IP.

You are then good to go with your android app.

You can not access a local api outside from that local device. 127.0.0.1 is the local address of its own. If you want to access the api outside from local device, replace the ip with the ip that is open to outside. For example, 192.168.43.2 is a ip that is accessible from outside. Update your api with the accessible ip(use ifconfig or ipconfig in terminal to obtain the ip and use that ip to access from outsid?). Also, please make sure if you have proper permission in AndroidManifest.xml file.

For me, the problem was that my server was running on HTTP, not HTTPS. Once I set up my SSL certificate, everything worked fine. I’m using Expo and strangely the API works when in development mode through the Expo app, but after I build an APK it fails to connect to any non-HTTPS server.

In local host You must start the server and also do app development in same system then only it works for you..

There is no way of calling local APIs from android. Leave it.