android - Keep connection between activities using DefaultHttpClient -


i'm developing app sends requests sap, i’ve been wrestling keep connection alive while i’m in app.

i got 3 activities: main, connection , list.

when start app goes main, after tap on connection establish connection between sap , device , connects successfully.

the issue have when press return button main , go list activity, cannot retrieve data because have lost defaulthttpclient had connection.

public string logintosap(string pip, int pport, string pschema, string puser, string ppassword) {     string result = "";      //      httphost targethost = new httphost(pip, pport, pschema);     httphost targethost = new httphost(pip, pport, pschema);      //          defaulthttpclient httpclient = new defaulthttpclient();     httpclient.getcredentialsprovider().setcredentials(new authscope(targethost.gethostname(),              targethost.getport()), new usernamepasswordcredentials(puser, ppassword));      // create authcache instance     authcache authcache = new basicauthcache();      // generate basic scheme object , add local auth cache     basicscheme basicauth = new basicscheme();     authcache.put(targethost, basicauth);      // add authcache execution context     basichttpcontext localcontext = new basichttpcontext();     localcontext.setattribute(clientcontext.auth_scheme_pref, authcache);      httpget request = new httpget("/sap/z_conn");      responsehandler<string> handler = new basicresponsehandler();     try {         result = httpclient.execute(targethost, request, handler);     } catch (clientprotocolexception e) {         e.printstacktrace();         toast.maketext(this, "wrong connection parameters", toast.length_short).show();                  result = "wrong connection parameters";     } catch (ioexception e) {         e.printstacktrace();                     toast.maketext(this, "ioexception", toast.length_short).show();         result = "ioexception";     }     return result; }

you extend application object , put defaulthttpclient in there.

how extend , use application object:

how declare global variables in android?


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