传递bitmap和去掉SeekBar Background

Intent intent = new Intent(this, NewActivity.class);?
intent.putExtra("BitmapImage", bitmap);?

Bitmap bitmap = (Bitmap) intent.getParcelableExtra("BitmapImage");?

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2. 创建一个blank drawable 然后satBar.setProgressDrawable(invisibleBackground);?
? 也许这样也可以setBackgroundDrawable(null)

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