android - How to create a gridView with varying row-column size, dynamically? -

this gridview i'm trying make. letter tiles must distinct textviews corners rounded.

http://www.expertsmind.com/cmsimages/125_boggle.png

and how far have come.

public class mainactivity extends activity { gridview grid; static final string[] letters = new string[] {"b","a","t","t","t"}; @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     grid = (gridview) findviewbyid(r.id.mygrid);     arrayadapter adapter = new arrayadapter(this, android.r.layout.simple_list_item_1, letters);     grid.setadapter(adapter);       grid.setonitemclicklistener(new onitemclicklistener() {         public void onitemclick(adapterview parent, view v, int position, long id)         {             toast.maketext(getapplicationcontext(),                     ((textview) v).gettext(), toast.length_short).show();              v.setbackgroundcolor(color.cyan);         }     }); } 

}

my xml file,

<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:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" android:paddingbottom="@dimen/activity_vertical_margin"  tools:context=".mainactivity">  <gridview xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/mygrid"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:columnwidth="50dp"     android:gravity="center"     android:numcolumns="auto_fit"     android:stretchmode="columnwidth"     android:background="@drawable/rounded"> </gridview>  </relativelayout> 

now board i'm trying make like,

                         f                          r e 

and 5 digit letter it'll show as,

                     e g                       h t 

i'm trying set layout java file dynamically. please provide suggestion or example code. don't think understand part how can individual items of arrayadapter, can set it's color yellow or rounded corners. if please explain little it'll great help. in advance.

gridview won't layout 5 letter example want, do:

e g h t 

i.e. columns have aligned. may need use recyclerview achieve this.

for rounded corners, need background rounded corners on textview.