android - achartengine intent wont start -

i'm working on app plots user data chartengine lib. have tab application , chart plot works anywhere not activities load tabs. wonder why , if can me?

this works:

public class dataactivity extends activity { static final int series_nr = 3; @override protected void oncreate(bundle savedinstancestate) {     // todo auto-generated method stub     super.oncreate(savedinstancestate);     requestwindowfeature(window.feature_no_title);     setcontentview(r.layout.data_form);     xymultipleseriesrenderer renderer = gettruitonbarrenderer();     mychartsettings(renderer);     intent = chartfactory.getbarchartintent(dataactivity.this, gettruitonbardataset(), renderer, type.default);     startactivity(i);        }    private xymultipleseriesdataset gettruitonbardataset() {         xymultipleseriesdataset dataset = new xymultipleseriesdataset();         final int nr = 11;         random r = new random();         arraylist<string> legendtitles = new arraylist<string>();         legendtitles.add("sales");         legendtitles.add("expenses");         legendtitles.add("age");         (int = 0; < series_nr; i++) {             categoryseries series = new categoryseries(legendtitles.get(i));             (int k = 0; k < nr; k++) {                 series.add(k+ r.nextint() % 100);             }             dataset.addseries(series.toxyseries());         }         return dataset;     }      public xymultipleseriesrenderer gettruitonbarrenderer() {         xymultipleseriesrenderer renderer = new xymultipleseriesrenderer();         renderer.setaxistitletextsize(16);         renderer.setcharttitletextsize(20);         renderer.setlabelstextsize(15);         renderer.setlegendtextsize(15);         renderer.setmargins(new int[] { 30, 40, 15, 0 });         simpleseriesrenderer r = new simpleseriesrenderer();         r.setcolor(color.blue);         renderer.addseriesrenderer(r);          r = new simpleseriesrenderer();         r.setcolor(color.red);         renderer.addseriesrenderer(r);          r = new simpleseriesrenderer();         r.setcolor(color.cyan);         renderer.addseriesrenderer(r);          return renderer;     }      private void mychartsettings(xymultipleseriesrenderer renderer) {         renderer.setcharttitle("achart engine mahdi tajik");         renderer.setxaxismin(0.5);         renderer.setxaxismax(10.5);         renderer.setyaxismin(0);         renderer.setyaxismax(210);         renderer.addxtextlabel(1, "2010");         renderer.addxtextlabel(2, "2011");         renderer.addxtextlabel(3, "2012");         renderer.addxtextlabel(4, "2013");         renderer.addxtextlabel(5, "2013");         renderer.addxtextlabel(6, "2013");         renderer.addxtextlabel(7, "2012");         renderer.addxtextlabel(8, "20123");         renderer.addxtextlabel(9, "201223");         renderer.addxtextlabel(10, "2022213");         renderer.addxtextlabel(11, "20122223");         renderer.setylabelsalign(align.right);         renderer.setbarspacing(0.5);         renderer.setxtitle("years");         renderer.setytitle("performance");         renderer.setshowgrid(true);         renderer.setgridcolor(color.gray);         renderer.setxlabels(0); // sets number of integer labels appear     }   } 

but wont work:

@override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     //requestwindowfeature(window.feature_no_title);     setcontentview(r.layout.static_form);      initilizeui(); }  private void plotweekstatics(){     xymultipleseriesrenderer renderer = gettruitonbarrenderer();     mychartsettings(renderer);     intent = chartfactory.getbarchartintent(staticactivity.this, gettruitonbardataset(), renderer, type.default);     startactivity(i);     }  private xymultipleseriesdataset gettruitonbardataset() {         xymultipleseriesdataset dataset = new xymultipleseriesdataset();         final int nr = 11;         random r = new random();         arraylist<string> legendtitles = new arraylist<string>();         legendtitles.add("sales");         legendtitles.add("expenses");         legendtitles.add("age");         (int = 0; < series_nr; i++) {             categoryseries series = new categoryseries(legendtitles.get(i));             (int k = 0; k < nr; k++) {                 series.add(k+ r.nextint() % 100);             }             dataset.addseries(series.toxyseries());         }         return dataset;     }      public xymultipleseriesrenderer gettruitonbarrenderer() {         xymultipleseriesrenderer renderer = new xymultipleseriesrenderer();         renderer.setaxistitletextsize(16);         renderer.setcharttitletextsize(20);         renderer.setlabelstextsize(15);         renderer.setlegendtextsize(15);         renderer.setmargins(new int[] { 30, 40, 15, 0 });         simpleseriesrenderer r = new simpleseriesrenderer();         r.setcolor(color.blue);         renderer.addseriesrenderer(r);          r = new simpleseriesrenderer();         r.setcolor(color.red);         renderer.addseriesrenderer(r);          r = new simpleseriesrenderer();         r.setcolor(color.cyan);         renderer.addseriesrenderer(r);          return renderer;     }      private void mychartsettings(xymultipleseriesrenderer renderer) {         renderer.setcharttitle("achart engine mahdi tajik");         renderer.setxaxismin(0.5);         renderer.setxaxismax(10.5);         renderer.setyaxismin(0);         renderer.setyaxismax(210);         renderer.addxtextlabel(1, "2010");         renderer.addxtextlabel(2, "2011");         renderer.addxtextlabel(3, "2012");         renderer.addxtextlabel(4, "2013");         renderer.addxtextlabel(5, "2013");         renderer.addxtextlabel(6, "2013");         renderer.addxtextlabel(7, "2012");         renderer.addxtextlabel(8, "20123");         renderer.addxtextlabel(9, "201223");         renderer.addxtextlabel(10, "2022213");         renderer.addxtextlabel(11, "20122223");         renderer.setylabelsalign(align.right);         renderer.setbarspacing(0.5);         renderer.setxtitle("years");         renderer.setytitle("performance");         renderer.setshowgrid(true);         renderer.setgridcolor(color.gray);         renderer.setxlabels(0); // sets number of integer labels appear     } 

why same code work in 1 activity not in must in second code sample loads tabactivity.

i solve problem. problem wont define achartactivity in manifest file this:

<activity android:name="org.achartengine.graphicalactivity"/> 

and adding app works correctly. :)