安卓动态获取drawable中的图片

方式一

如果图片命名规范

private fun getImageRes(imgIndex: Int): Int {
        return resources.getIdentifier("img_$imgIndex", "drawable", packageName)
    }

调用

imageView.setImageResource(getImageRes(1))

方式二

如果图片命名不规范

private val drawables = arrayOf(R.drawable.img_0, R.drawable.img_1, R.drawable.img_2)
private fun getImageRes(imgIndex: Int): Int {
    return drawables[imgIndex]
}

调用

imageView.setImageResource(getImageRes(1))