android学习笔记之检查网络状态和判断URL是否是有效

//检查网络连接状态，Monitor network connections (Wi-Vi, GPRS, UMTS, etc.)

public static boolean checkNetWorkStatus(Context context){

boolean result;

ConnectivityManager cm=(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo netinfo = cm.getActiveNetworkInfo();

if ( netinfo !=null && netinfo.isConnected() ) {

result=true;

Log.i(TAG, "The net was connected" );

}else{

result=false;

Log.i(TAG, "The net was bad!");

}

return result;

}

public static boolean checkURL(String url){

boolean value=false;

try {

HttpURLConnection conn=(HttpURLConnection)new URL(url).openConnection();

int code=conn.getResponseCode();

System.out.println(">>>>>>>>>>>>>>>> "+code+" <<<<<<<<<<<<<<<<<<");

if(code!=200){

value=false;

}else{

value=true;

}

} catch (MalformedURLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

return value;

}