TextView setText 和 插入图片

setTextSize(int unit, int size)
第一个参数可设置如下静态变量：
TypedValue.COMPLEX_UNIT_PX : Pixels
TypedValue.COMPLEX_UNIT_SP : Scaled Pixels
TypedValue.COMPLEX_UNIT_DIP : Device Independent Pixels

  tvMeDec.setText(Html.fromHtml(descString(), getImageGetterInstance(),
                null));

  private String descString() {
        return "生活不止眼前的苟且，还有诗和远方的苟且 " + "<img src='" + R.mipmap.icon_edit + "'/>";
    }

 public Html.ImageGetter getImageGetterInstance() {
        Html.ImageGetter imgGetter = new Html.ImageGetter() {
            @Override
            public Drawable getDrawable(String source) {
                int id = Integer.parseInt(source);
                Drawable d = getResources().getDrawable(id);
                int wdp = dip2px(UIUtils.getContext(), 20);
                int hdp = dip2px(UIUtils.getContext(), 20);
                d.setBounds(0, 0, wdp, hdp);
                return d;
            }
        };
        return imgGetter;
    }



public static int dip2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }