android判断网络

public class NetConnection  {static Context context; Handler tickHandler;     public NetConnection(Context context){this.context=context;    //  run();}public void run() {          tickHandler = new Handler();          tickHandler.post(tickRunnable);       }         private Runnable tickRunnable = new Runnable() {           public void run() {             //  postInvalidate();           checkNetworkInfo();            tickHandler.postDelayed(tickRunnable, 2000);           }       };              public  static boolean checkNetworkInfo()    {      ConnectivityManager conMan = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);     //mobile 3G Data Network          State mobile = conMan.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();     //txt3G.setText(mobile.toString());        //wifi         State wifi = conMan.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();        //txtWifi.setText(wifi.toString());                //如果3G网络和wifi网络都未连接，且不是处于正在连接状态 则进入Network Setting界面 由用户配置网络连接        if(mobile==State.CONNECTED||mobile==State.CONNECTING)             return true;          if(wifi==State.CONNECTED||wifi==State.CONNECTING)         return true;    else{    LOG.print("没有网络");    return false;    }        //进入手机中的wifi网络设置界面            }    //进入无线网络配置界面         //context.startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));        }}
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