/**      * 获取当前的接入点是ctwap还是ctnet     * @author <a href="mailto:yejiurui@126.com">yejiurui</a>      * @version 1.0 2013-5-17 下午5:46:05  2013      */     private  String CTWAP="ctwap";     private  String CTNET="ctnet";     private  Uri PREFERRED_APN_URI = Uri         .parse("content://telephony/carriers/preferapn");     public  String getApnType(Context context) {         String apntype = "nomatch";         Cursor c = context.getContentResolver().query(PREFERRED_APN_URI, null,                 null, null, null);         c.moveToFirst();         String user = c.getString(c.getColumnIndex("apn"));         if (user.startsWith(CTNET)) {             apntype = CTNET;         } else if (user.startsWith(CTWAP)) {             apntype = CTWAP;         }         return apntype;     }