I am making an app in android studio which connects to a specific wifi network using wifimanager.
When I close the app I want it to remove the wifi network from the configuration and enable all other wifi networks.
For example:
- I am connected to wifi network: networkA
- I open the app
- The wifimanager connects to wifi network: networkB
- I close the app
- The wifimanager disconnects networkB and removes it from configuration
After this I want my phone to automatically connect to the configured network with the best signal. (networkA in this case)
When I close the app it does disconnect networkB but if I open the wifi network tab on my phone it says "Disabled" as the state of networkA.
How can I enable networkA again?
I have tried to do wifiManager.enableNetwork(networkBid, false)
but it would just disconnect networkA on opening the app and reconnect to networkA after that.
MainActivity.java:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myWebView = (WebView) findViewById(R.id.activity_main);
myWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
WifiManager wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);
WifiConfiguration conf = new WifiConfiguration();
int WDTWifiCount = 0;
List<ScanResult> results = wifiManager.getScanResults();
for (ScanResult scanResult : results) {
if (scanResult.SSID.contains("WDT_")) {
SSIDList.add(WDTWifiCount, scanResult.SSID);
WDTWifiCount++;
}
}
if (WDTWifiCount < 1) {
startActivityForResult(new Intent(this, NoWifi.class), 2);
} else if (WDTWifiCount > 1) {
Intent intent = new Intent(this, MultipleWifi.class);
intent.putStringArrayListExtra("SSIDList", (ArrayList<String>) SSIDList);
startActivityForResult(intent, 1);
} else if (WDTWifiCount == 1) {
networkSSID = SSIDList.get(0);
if (networkSSID.length() == 8) {
networkPass = "24816";
} else if (networkSSID.length() == 9) {
networkPass = "248163264";
}
conf.SSID = "\"" + networkSSID + "\"";
conf.preSharedKey = "\"" + networkPass + "\"";
wifiManager.addNetwork(conf);
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for (WifiConfiguration i : list) {
if (i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
wifiManager.disconnect();
wifiManager.enableNetwork(i.networkId, true);
wifiManager.reconnect();
break;
}
}
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setLoadWithOverviewMode(true);
webSettings.setUseWideViewPort(true);
webSettings.setSupportZoom(true);
webSettings.setBuiltInZoomControls(true);
myWebView.setWebChromeClient(new WebChromeClient());
if (networkSSID.length() == 9) {
myWebView.loadUrl("http://192.168.1.1/index.html");
} else if (networkSSID.length() == 8) {
myWebView.loadUrl("http://192.168.1.3/home.htm");
}
}
} @override public void onBackPressed() {
String webUrl = myWebView.getUrl();
if (webUrl.equals("http://192.168.1.1/index.html") || webUrl.equals("http://192.168.1.3/home.htm") || webUrl == null) {
WifiManager wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for (WifiConfiguration i : list) {
if (i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
wifiManager.disconnect();
networkID = i.networkId;
break;
}
}
wifiManager.removeNetwork(networkID);
super.onBackPressed();
} else {
myWebView.goBack();
}
}
I have found the solution:
I get the current network id (networkA) before connecting to networkB.
After closing the app, it reconnects to networkA.
I would rather have it not disable every network so that the smartphone can connect to any network, but it is a good alternative.