判断网络类型及是否有网络

判断当前是否有可用网络

public String getNetworkType()  {android.net.ConnectivityManager connManager = (android.net.ConnectivityManager)getApplicationContext().getSystemService(android.content.Context.CONNECTIVITY_SERVICE);android.net.NetworkInfo.State state = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();if(state == State.CONNECTED || state == State.CONNECTING){return "wifi";}//3G网络判断state = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();if(state == State.CONNECTED || state == State.CONNECTING){return "mobile";}return "none";}