Android:如何在Kotlin中对可绘制/位图应用色调？

val drawable: Drawable = ContextCompat.getDrawable(context, R.drawable.your_image)!!
drawable.colorFilter = LightingColorFilter(0xFF808080.toInt(), 0x00000000)

val colorMatrix = ColorMatrix()
colorMatrix.setSaturation(0f) // 设置饱和度为0，得到灰度图像
colorMatrix.postConcat(ColorMatrix(floatArrayOf(
    1f, 0f, 0f, 0f, 50f, // 红色通道增加50
    0f, 1f, 0f, 0f, 0f,
    0f, 0f, 1f, 0f, 0f,
    0f, 0f, 0f, 1f, 0f
)))

val filter = ColorMatrixColorFilter(colorMatrix)
drawable.colorFilter = filter

val originalBitmap: Bitmap = BitmapFactory.decodeResource(context.resources, R.drawable.your_image)
val newBitmap = Bitmap.createBitmap(originalBitmap.width, originalBitmap.height, originalBitmap.config)
val canvas = Canvas(newBitmap)
val paint = Paint().apply {
    colorFilter = LightingColorFilter(0xFF808080.toInt(), 0x00000000)
}
canvas.drawBitmap(originalBitmap, 0f, 0f, paint)