让部分TextView里的文字可以点击并改变颜色

如题：

是百度到别人的并整合起来的。上图：

点击后效果：

开源使技术进步，上代码：

private void checkModel() {

  // =========查看模板========

  String str = join_look_model.getText().toString().trim();

  SpannableStringBuilder model = new SpannableStringBuilder(str);

  ForegroundColorSpan redSpan = new ForegroundColorSpan(

    Color.parseColor("#e45050"));

  Pattern ptn = Pattern.compile("(查看样板)");

  Matcher mth = ptn.matcher(str);

  while (mth.find()) {

   final String group = mth.group();

   ClickableSpan what = new ClickableSpan() {

    @Override

    public void onClick(View v) {

     //
     new AlertDialog.Builder(JoinActivity.this)

       .setMessage(group).setPositiveButton("ok", null)

       .show();

    }
   };
   model.setSpan(what, mth.start(), mth.end(),

     Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

  }
  model.setSpan(redSpan, 18, 24, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

  join_look_model.setText(model);

  join_look_model.setMovementMethod(LinkMovementMethod.getInstance());

  // ================================
 }