public boolean isWifiConnect() {

ConnectivityManager connManager = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo mWifiInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

return mWifiInfo.isConnected();

}

public void checkWifiState() {

if (isWifiConnect()) {

WifiManager mWifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);

WifiInfo mWifiInfo = mWifiManager.getConnectionInfo();

int wifi = mWifiInfo.getRssi();//获取wifi信号强度

if (wifi > -50 && wifi < 0) {//最强

Log.e(TAG, "最强");

} else if (wifi > -70 && wifi < -50) {//较强

Log.e(TAG, "较强");

} else if (wifi > -80 && wifi < -70) {//较弱

Log.e(TAG, "较弱");

} else if (wifi > -100 && wifi < -80) {//微弱

Log.e(TAG, "微弱");

}

} else {

//无连接

Log.e(TAG, "无wifi连接");

}

}