您可以使用 setPadding() 尝试去除图像和边框之间的空间.

You can use setPadding() to try to remove the space between the image and the border.

button.setPadding(0, 0, 0, 0);

否则我建议使用带有 OnClickListener 的常规 ImageView.

Otherwise I suggest using a regular ImageView with an OnClickListener.