Program Resource

Resource libraries for programmers and developers

Getting / setting Wifi in Android is easy.

First, set permission in manifest.

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

CHANGE_WIFI_STATE is not needed when only getting status. Now, simple code.

WifiManager wifi;

public void onCreate(Bundle savedInstanceState) {
	wifi = (WifiManager)getSystemService(WIFI_SERVICE);

public boolean checkWifi() {
   	return (wifi.isWifiEnabled());

public void setWifi(boolean set){

Since Wifi status changes realtime, register BroadcastReceiver if you want to get notified if status changes.

protected void onResume() {
	IntentFilter filter = new IntentFilter();
	registerReceiver(mBroadcastReceiver, filter);

protected void onPause() {

private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
	public void onReceive(Context context, Intent intent) {
		String action = intent.getAction();
		if (action.equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {
			int extraWifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE , WifiManager.WIFI_STATE_UNKNOWN);

			if (extraWifiState == WifiManager.WIFI_STATE_DISABLED){
			else if (extraWifiState == WifiManager.WIFI_STATE_ENABLED){

This post is also available in: Japanese

Leave a Reply

Your email address will not be published. Required fields are marked *