- public class NetworkCheck {
- /**
- * 网络是否可用
- */
- public static boolean isNetworkAvailable(Context context) {
- ConnectivityManager connectivity = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- if (connectivity == null) {
- } else {
- NetworkInfo[] info = connectivity.getAllNetworkInfo();
- if (info != null) {
- for (int i = 0; i < info.length; i++) {
- if (info[i].getState() == NetworkInfo.State.CONNECTED) {
- return true;
- }
- }
- }
- }
- return false;
- }
- /**
- * wifi是否打开
- */
- public static boolean isWifiEnabled(Context context) {
- ConnectivityManager mgrConn = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- TelephonyManager mgrTel = (TelephonyManager) context
- .getSystemService(Context.TELEPHONY_SERVICE);
- return ((mgrConn.getActiveNetworkInfo() != null && mgrConn
- .getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || mgrTel
- .getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS);
- }
- /**
- * 判断当前网络是否是wifi网络
- * if(activeNetInfo.getType()==ConnectivityManager.TYPE_MOBILE) { //判断3G网
- *
- * @param context
- * @return boolean
- */
- public static boolean isWifi(Context context) {
- ConnectivityManager connectivityManager = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
- if (activeNetInfo != null
- && activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) {
- return true;
- }
- return false;
- }
- /**
- * 判断当前网络是否是3G网络
- *
- * @param context
- * @return boolean
- */
- public static boolean is3G(Context context) {
- ConnectivityManager connectivityManager = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
- if (activeNetInfo != null
- && activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
- return true;
- }
- return false;
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/201120137334.html
来源: http://www.codesnippet.cn/detail/201120137334.html