ImageSpan图片和在行文字居中

文字中添加图标：

/** 文字中增加图标 */
    public static Spannable addDrawableInText(int start, int end, int resouceId, Spannable text) {
        Drawable drawable = SkinManager.getInstance().getDrawable(resouceId);
        drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
        text.setSpan(new MyImageSpan(drawable), start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        return text;
    }

图片span

public class MyImageSpan extends ImageSpan {
    public MyImageSpan(Context arg0, int arg1) {
        super(arg0, arg1);
    }

    public MyImageSpan(Drawable d) {
        super(d);
    }

    @Override
    public void draw(Canvas canvas, CharSequence text, int start, int end,
                     float x, int top, int y, int bottom, Paint paint) {

        Drawable b = getDrawable();
        // font metrics of text to be replaced
        Paint.FontMetricsInt fm = paint.getFontMetricsInt();
        int transY = (y + fm.descent + y + fm.ascent) / 2
                - b.getBounds().bottom / 2;

        canvas.save();
        canvas.translate(x, transY);
        b.draw(canvas);
        canvas.restore();
    }
}

点击和颜色的span：

class TopicsBlueSpan extends ClickableSpan {
    private String content;

    public TopicsBlueSpan(String content) {
        this.content = content;
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        ds.setColor(Color.BLUE);
        ds.setUnderlineText(false);
    }

    @Override
    public void onClick(View widget) {
        ...
    }
}

此时点击后会出现文字选中出现淡绿色的背景色现象。ds.setColor()设定的是span超链接的文本颜色，而不是点击后的颜色，点击后的背景颜色HighLightColor属于TextView的属性，通过方法
textview.setHighlightColor(Color.TRANSPARENT);解决。