android - 如何添加文本 Seekbar 拇指？

Question

我正在尝试创建自定义 SeekBar。我想在 seekbar 的拇指上添加 textview 或文本并动态更改此 textview。我怎样才能做到这一点 ？

我的设计在这里http://i.stack.imgur.com/k1ifi.png

Answer 1

我已将此功能用于解决方案；

public BitmapDrawable writeOnDrawable(Bitmap thumb, String text) {

Bitmap bm = thumb.copy(Bitmap.Config.ARGB_8888, true);

Paint paint = new Paint();
paint.setStyle(Style.FILL);
paint.setColor(Color.parseColor("#288ca0"));
paint.setTextSize(bm.getHeight() / 3);
paint.setTypeface(type);
Canvas canvas = new Canvas(bm);
canvas.drawText(text , bm.getWidth() / 4 - bm.getWidth()/10,
        bm.getHeight() / 2 + bm.getHeight() / 10, paint);

return new BitmapDrawable(bm);
}