您的位置：首页 > 理论基础 > 计算机网络

android判断是否连接网络

2011-09-02 16:30 465 查看

转自：http://www.cnblogs.com/mmll/articles/2043172.html判断wifi网络是否链接

public static boolean isWiFiActive(Context inContext) {
WifiManager mWifiManager = (WifiManager) inContext
.getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
int ipAddress = wifiInfo == null ? 0 : wifiInfo.getIpAddress();
if (mWifiManager.isWifiEnabled() && ipAddress != 0) {
System.out.println("**** WIFI is on");
return true;
} else {
System.out.println("**** WIFI is off");
return false;
}
}

判断wifi是否连接（2）：

ConnectivityManager connManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);if (mWifi.isConnected()) {// Do whatever}

判断3G网络是否链接

public static boolean isNetworkAvailable( Context context) {ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);if (connectivity == null) {System.out.println("**** newwork is off");return false;} else {NetworkInfo info = connectivity.getActiveNetworkInfo();if(info == null){System.out.println("**** newwork is off");return false;}else{if(info.isAvailable()){System.out.println("**** newwork is on");return true;}}}System.out.println("**** newwork is off");return false;}