android - Why is my button creating a white screen? -

ok i'm running tabhost app webview on each tab, each webview url ends ?id= , on tab 5 have textview , button when user types in value saves , loads value @ end of ?id=, when press button opens blank white screen , makes tab host disappear instead of reloading of tabs new webview url. why opening new blank white screen?

tab 5, text view , button

public class tab5 extends activity{  protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.tab5);      button btngo;     btngo = (button) findviewbyid(r.id.button1);     final edittext edit = (edittext) findviewbyid(r.id.edittext1);      btngo.setonclicklistener(new view.onclicklistener() {          @override         public void onclick(view v) {              intent intent = new intent(tab5.this, tab1.class);             intent.putextra("com.sideresult.outputapps.name", edit.gettext().tostring());             startactivity(intent);                         }                      });  } 

example of 1 of webview tabs

public class tab1 extends activity {  private webview webview;  public final static string url = "outputapps.com/build/infoview.php?id=";  public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.tab1);      webview = (webview) findviewbyid(r.id.webview1);     webview.getsettings().setjavascriptenabled(true);     intent intent = getintent();     string name = intent.getstringextra("com.sideresult.outputapps.name");     webview.loadurl(tab1.url + name);     webview.setwebviewclient(new myappwebviewclient());     websettings settings = webview.getsettings();         settings.setloadwithoverviewmode(true);         settings.setusewideviewport(true);  }