判断各种网络的连接状态


public class NetWorkUtil {

public static boolean isNetworkConnected(Context context) { //判断网络是否可用

if (context != null) {

ConnectivityManager mConnectivityManager = (ConnectivityManager) context

.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();

if (mNetworkInfo != null) {

return mNetworkInfo.isAvailable();

}

}

return false;

}

public static boolean isWifiConnected(Context context) { //判断WIFI是否可用

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;

}

public static boolean isMobileConnected(Context context) { //判断移动网络是否可用

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;

}

public static int getConnectedType(Context context) { //判断当前网络连接类型

if (context != null) {

ConnectivityManager mConnectivityManager = (ConnectivityManager) context

.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();

if (mNetworkInfo != null && mNetworkInfo.isAvailable()) {

return mNetworkInfo.getType();

}

}

return -1;

}

}