android - ScrollView not working with aChartEngine -

i trying put multiple charts on single activity, , use scrollview view them all.

the first 2 charts showing second 2 not. have followed instructions tutorials, , have followed suggestions on stack, none of them work.

i have tried removing scrollview, charts still not displaying. appreciated.

xml:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingbottom="@dimen/activity_vertical_margin"     android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     tools:context=".mainactivity" >        <scrollview          android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:fillviewport="true" >          <linearlayout              android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:orientation="vertical">       <linearlayout     android:id="@+id/chart"     android:layout_width="fill_parent"     android:layout_height="300dp"      android:orientation="horizontal" />      <linearlayout     android:id="@+id/chart1"     android:layout_width="fill_parent"     android:layout_height="300dp"     android:layout_below="@id/chart"     android:orientation="horizontal" />       <linearlayout     android:id="@+id/chart2"     android:layout_width="fill_parent"     android:layout_height="300dp"     android:layout_below="@id/chart1"     android:orientation="horizontal" />        <linearlayout     android:id="@+id/chart3"     android:layout_width="fill_parent"     android:layout_height="300dp"     android:layout_below="@id/chart2"     android:orientation="horizontal" />       </linearlayout>       </scrollview>  </relativelayout> 

linegraph.java

public class linegraph extends activity{      xymultipleseriesdataset dataset = new xymultipleseriesdataset();     xymultipleseriesrenderer mrenderer = new xymultipleseriesrenderer();         protected static graphicalview mchartview;      public graphicalview getview(context context, int[]z, int []zz){          categoryseries series = new categoryseries("line1");       for(int i=0;i<z.length;i++){         series.add("bar " + (i+1),z[i]);     }       categoryseries series2= new categoryseries("demo");     for(int i=0;i<zz.length;i++){         series2.add("bar " + (i+1),zz[i]);     }      xymultipleseriesdataset dataset = new xymultipleseriesdataset();     dataset.addseries(series.toxyseries());     dataset.addseries(series2.toxyseries());      xymultipleseriesrenderer mrenderer = new xymultipleseriesrenderer();     mrenderer.setaxescolor(color.green);      xyseriesrenderer renderer = new xyseriesrenderer();     renderer.setdisplaychartvalues(true);     renderer.setchartvaluesspacing((float)0.5);     mrenderer.addseriesrenderer(renderer);      mrenderer.setzoomenabled(false);     mrenderer.setpanenabled(false);     mrenderer.setzoomrate(6.0f);     mrenderer.setshowlabels(true);     mrenderer.setfitlegend(true);     mrenderer.setinscroll(true);        xyseriesrenderer renderer2 = new xyseriesrenderer();     renderer.setcolor(color.cyan);     renderer.setdisplaychartvalues(true);     mrenderer.addseriesrenderer(renderer2);             return chartfactory.getlinechartview(context, dataset, mrenderer);        }     } 

mainactivity:

public class mainactivity extends linegraph {      int a[] ={1,2,3};     int b[] ={4,5,6};     int c[] ={7,8,9};     int d[] ={10,11,12};     int e[] ={13,14,15};     int f[] ={16,17,18};     int g[] ={19,20,21};     int h[] ={22,23,24};     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          linegraphhandler ();      }         public void linegraphhandler (){         linegraph line = new linegraph();         graphicalview gview = line.getview(this, a,b);         graphicalview gv = line.getview(this,c,d);         graphicalview gv2 = line.getview(this,e,f);         graphicalview gv3 = line.getview(this,g,h);          linearlayout layout = (linearlayout) findviewbyid(r.id.chart);         layout.addview(gview);                linearlayout layout2 = (linearlayout) findviewbyid(r.id.chart1);         layout2.addview(gv);          linearlayout layout3 = (linearlayout) findviewbyid(r.id.chart2);         layout2.addview(gv2);          linearlayout layout4 = (linearlayout) findviewbyid(r.id.chart3);         layout2.addview(gv3);     }    } 

use scroll view parent layout rather relative layout