android - How to Highlight search results in ListView -

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i not understand how can highlight search results.

i tried of spannablestring here not know how implement in case. write error in line mtextview.settext(spannable)

public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.search);      // listview data     final string[] products = new string[] {         getresources().getstring(r.string.t1_2),         getresources().getstring(r.string.t1_3),         getresources().getstring(r.string.t1_4),     };      lv = (listview) findviewbyid(r.id.list_view);     inputsearch = (edittext) findviewbyid(r.id.inputsearch);     mtextview = (textview) findviewbyid(r.id.product_name);      // adding items listview     adapter = new arrayadapter<string>(this, r.layout.list_item,r.id.product_name, products);     lv.setadapter(adapter);     lv.setvisibility(view.gone);      // once user enters new data in edittext need text     // , passing array adapter filter.     inputsearch.addtextchangedlistener(new textwatcher() {      @override     public void ontextchanged(charsequence cs, int arg1, int arg2, int arg3) {     // when user changed text          search.this.adapter.getfilter().filter(cs);          textlength = inputsearch.gettext().length();         // adapter.clear();         if (textlength != 0) {             lv.setvisibility(view.visible);             (int = 0; < products.length; i++) {                 if (textlength <= products[i].length()) {                     spannable spannable = new spannablestring(inputsearch.gettext().tostring());                     colorstatelist bluecolor = new colorstatelist(new int[][] { new int[] {}}, new int[] { color.blue });                     textappearancespan highlightspan = new textappearancespan(null, typeface.bold, -1, bluecolor, null);                     spannable.setspan(highlightspan, 0,5 , spannable.span_exclusive_exclusive);                     mtextview.settext(spannable);                 }             }         }     }      @override     public void beforetextchanged(charsequence arg0, int arg1, int arg2, int arg3) {     // todo auto-generated method stub      }      @override     public void aftertextchanged(editable arg0) {     // todo auto-generated method stub      } }); } }


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