I am using fromHtml for some words, but it not properly shown.Sorry my bad english.
Typeface tfArial = Typeface.createFromAsset(getAssets(), "arialtur.otf");
String yazi="Deneme "+"<strong>"+"must be bold"+"</strong>"+" kayıt.";
Spanned text1 = Html.fromHtml(yazi);
TextView aa= (TextView) findViewById(R.id.metin1);
TextView ab= (TextView) findViewById(R.id.metin2);
aa.setText(text1);
aa.setTypeface(tfArial);
ab.setText("Non arial font");
screenshot http://hizliresim.com/rd4gkV