Forget stored WiFi networks programmatically

Question

What is the way to forget the old Wi-Fi network saved and delete connection file in android 6 and higher?

Answer 1

If want to forget the old wifi network saved , you can follow bellow ways to have a try :

public void RemoveWiFi()
{
    WifiManager mWifiManager = (WifiManager)GetSystemService(Context.WifiService);
    WifiConfiguration mWifiConfig = new WifiConfiguration();
    List<WifiConfiguration> conlist = (List<WifiConfiguration>)mWifiManager.ConfiguredNetworks;//获取保存的配置信息
    for (int i = 0; i < conlist.Count; i++)
    {
        Log.Debug("Tag", "i = " + i + "SSID = " + conlist[i].Ssid + " netId = " + conlist[i].NetworkId);
        
        // Forget the specified wifi 
        // if (conlist[i].Ssid == "xxx") { ... }
         
        // Forget the current connected wifi
        if ( i == 0 ) 
        {
            mWifiManager.RemoveNetwork(conlist[i].NetworkId);
        }
        
    }
}

Not forget to add permissions in AndroidManifest.xml :

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

Note :

You need to turn the app into a system app and give system permissions .

1. Modify the AndroidManifest.xml :

...

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package=xxxx"
    android:sharedUserId="android.uid.system"
    coreApp="true">

 <application
        android:process="system"
 />

2. Install app bellow /system/app folder in Android device .