Undo setting proxy via Settings.Global in Android

Question

I am writing system app, which sets global http proxy via

Settings.Global.putString(getContentResolver(), Settings.Global.HTTP_PROXY, "127.0.0.1");

How can I revert this change?
This don't work:

Settings.Global.putString(getContentResolver(), Settings.Global.HTTP_PROXY, null);

Any ideas?
Thanks in advance

Answer 1

Andrews answer works but only for rooted devices, here's my solution for non-rooted devices.

I added the proxy with the following command:

adb shell settings put global http_proxy <ip>:<port>

Update: To remove it you can use the following command (thanks to Rohit Patel for providing this):

adb shell settings put global http_proxy :0 

To remove it I used these commands:

adb shell settings delete global http_proxy
adb shell settings delete global global_http_proxy_host
adb shell settings delete global global_http_proxy_port

Restart the device and you should be good to go

Answer 2

Below is the normal command to remove proxy settings which will be applied without device reboot. You can use it in your script or app relatively.

adb shell settings put global http_proxy :0

You don't need to run all three of those commands. It will work with just the one command above. All proxy settings will be removed instantly.