android TextView改变部分字体颜色

 textview = (TextView) findViewById(R.id.textview);
        SpannableStringBuilder ssbuilder = new SpannableStringBuilder(textview.getText().toString());
        //ForegroundColorSpan--文字前景色，BackgroundColorSpan--文字背景色
        ForegroundColorSpan yellowSpan = new ForegroundColorSpan(Color.YELLOW);
        ssbuilder.setSpan(yellowSpan, 11,15, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        textview.setText(ssbuilder);

效果如下：

QQ截圖20160619212930.png