一、添加權限

二、注冊監聽廣播

注冊監聽有兩種方式

1.AndroidMainfest.xml 中注冊

2.在代碼中注冊

IntentFilter filter = new IntentFilter();

filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);

filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);

filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);

registerReceiver(new WifiReceiver(), filter);

三、實現監聽廣播類

public class WifiReceiver extends BroadcastReceiver {

private static final String TAG = "wifiReceiver";

@Override

public void onReceive(Context context, Intent intent) {

if (intent.getAction().equals(WifiManager.RSSI_CHANGED_ACTION)) {

Log.i(TAG, "wifi信號強度變化");

}

//wifi連接上與否

if (intent.getAction().equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {

NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);

if (info.getState().equals(NetworkInfo.State.DISCONNECTED)) {

Log.i(TAG, "wifi斷開");

} else if (info.getState().equals(NetworkInfo.State.CONNECTED)) {

WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);

WifiInfo wifiInfo = wifiManager.getConnectionInfo();

//獲取當前wifi名稱

Log.i(TAG, "連接到網絡 " + wifiInfo.getSSID());

TtsManager ttsManager = new TtsManager();

ttsManager.checkTtsJet(context.getApplicationContext());

}

}

//wifi打開與否

if (intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {

int wifistate = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_DISABLED);

if (wifistate == WifiManager.WIFI_STATE_DISABLED) {

Log.i(TAG, "系統關閉wifi");

} else if (wifistate == WifiManager.WIFI_STATE_ENABLED) {

Log.i(TAG, "系統開啟wifi");

}

}

}

}

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總結

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