First add permissions in AndroidManifest.xml
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
1, to determine whether there is a network connection
public boolean isNetworkConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo(); if (mNetworkInfo != null) { return mNetworkInfo.isAvailable(); } } return false; }
2. Determine whether the WIFI network is available
public boolean isWifiConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mWiFiNetworkInfo = mConnectivityManager .getNetworkInfo(ConnectivityManager.TYPE_WIFI); if (mWiFiNetworkInfo != null) { return mWiFiNetworkInfo.isAvailable(); } } return false; }
3. Determine if the MOBILE network is available
public boolean isMobileConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mMobileNetworkInfo = mConnectivityManager .getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if (mMobileNetworkInfo! = null) { return mMobileNetworkInfo.isAvailable(); } } return false; }
4. Determine the network type
//return value -1: no network 1: WIFI network 2: wap network 3: net network public static int GetNetype(Context context) { int netType = -1; ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); if(networkInfo==null) { return netType; } int nType = networkInfo.getType(); if(nType==ConnectivityManager.TYPE_MOBILE) { if(networkInfo.getExtraInfo().toLowerCase().equals("cmnet")) { netType = 3; } else { netType = 2; } } else if(nType==ConnectivityManager.TYPE_WIFI) { netType = 1; } return netType; }