android - Radiobutton dynamically -

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i have edittext depending on number given in edit text have create radiobutton im getting error code

public void oncreate(bundle icicle) {         super.oncreate(icicle);         // todo add gui initialization code here         setcontentview(r.layout.main);         go=(button)findviewbyid(r.id.go);         no=(edittext)findviewbyid(r.id.noofradio);         err=(textview)findviewbyid(r.id.err);         go.setonclicklistener(new onclicklistener() {              public void onclick(view arg0) {                try                {                    int = integer.parseint(no.gettext().tostring());                    radiogroup radiogroup = new radiogroup(mainactivity.this);                    linearlayout.layoutparams rg = new radiogroup.layoutparams(                            radiogroup.layoutparams.wrap_content,                            radiogroup.layoutparams.wrap_content);                   (int = 0; < a; i++) {                        radiobutton = new radiobutton(mainactivity.this);                        radiobutton.settext(i);                        radiobutton.setid(i);                        radiogroup.addview(radiobutton, rg);                      }                }                catch(exception ex)                {                    err.settext(ex.tostring());                }             }         });       }  }

this xml 

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="vertical"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     >"     <textview         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:text="radiobuttons"         android:id="@+id/err"/>       <edittext            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:text=""            android:id="@+id/noofradio">        </edittext>        <button             android:id="@+id/go"             android:layout_width="fill_parent"             android:layout_height="wrap_content"             android:text="buttons">         </button> </linearlayout>

android content resource$not found exception stringresource id

i think have error in xml (well, using undefined string resource, guess)


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