android: string format specify bold

Question

I have a string defined in string.xml like

Title: %1$s 

which is formatted us

Answer 1

Typeface tfaerial=Typeface.createFromAsset(getAssets(),"fonts/aerial.ttf");
Typeface tfTradeGothicLight=Typeface.createFromAsset(getAssets(), "fonts/TradeGothic-Light.OTF");

String strt_title_desc=this.getResources().getString(R.string.eventtitle);

int upto=strt_title_desc.indexOf(":"); //of you can specify 5

 if (strt_title_desc!=null)
    {
        aboutAuthTV.setTextColor(Color.BLACK);
        aboutAuthTV.setLineSpacing(1.2f, 1.5f);
        aboutAuthTV.setTextSize(23);
    SpannableString SS = new SpannableString(strt_title_desc);
    SS. setSpan ( new StyleSpan(tfTradeGothicLight.getStyle()), 0, upto,Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
    SS. setSpan ( new StyleSpan(tfaerial.getStyle()), upto, strt_dialog_desc.length(),Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
    yourtextView.setText(SS);
}

// this for changing the font size, style and colors

String str="Bold 
 Then Normal Text

                         Then Italic " +
                       "
 this is simple sentence " +
                       "



this is simple sentence";
      Spanned strHtml= Html.fromHtml(str);

       TextView tv = (TextView)findViewById(R.id.textView);
       tv.setText(strHtml);