How to Programmatically Control Network Connectivity in Android?

Controlling Network Connectivity in Android

Introduction

Connecting to and disconnecting from Wi-Fi or the internet is a common task in Android programming. This article explores how to programmatically control network connectivity by enabling, disabling, or switching between networks.

Enable/Disable Wi-Fi

To enable or disable Wi-Fi, you must use the WifiManager class. Here's how:

WifiManager wifiManager = (WifiManager)this.context.getSystemService(Context.WIFI_SERVICE);
wifiManager.setWifiEnabled(status);

where status can be true (to enable) or false (to disable).

Edit: Permissions

To use the WifiManager, you need to declare the following permissions in your Android Manifest file:

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>

Note: Changing Wi-Fi state requires additional permissions depending on the Android version.

Switching Networks

Unfortunately, the ConnectivityManager class does not provide a direct method to switch between networks. However, you can use a workaround by enabling the desired network and then disabling the other.

Conclusion

This article has demonstrated how to programmatically control Wi-Fi connectivity in Android. By using the WifiManager class, you can enable, disable, or switch between networks, providing greater flexibility in managing network connections in your applications.

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