android判断是否连接网络

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自定义View界面大合集

判断wifi网络是否链接

 1 public static boolean isWiFiActive(Context inContext) { 2         WifiManager mWifiManager = (WifiManager) inContext 3         .getSystemService(Context.WIFI_SERVICE); 4         WifiInfo wifiInfo = mWifiManager.getConnectionInfo(); 5         int ipAddress = wifiInfo == null ? 0 : wifiInfo.getIpAddress(); 6         if (mWifiManager.isWifiEnabled() && ipAddress != 0) { 7         System.out.println("**** WIFI is on"); 8             return true; 9         } else {10             System.out.println("**** WIFI is off");11             return false;   12         }13 }

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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;    }

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