Android将ImageView显示的图原样取出转换为Bitmap,Kotlin

Android将ImageView显示的图原样取出转换为Bitmap,Kotlin

import android.graphics.Bitmap
import android.graphics.Canvas
import android.graphics.Rect
import android.graphics.drawable.Drawable

fun drawableToIntrinsicBitmap(imageView:ImageView): Bitmap? {
    val drawable = imageView.drawable ?: return null

    val intrinsicWidth = drawable.intrinsicWidth
    val intrinsicHeight = drawable.intrinsicHeight

    if (intrinsicWidth <= 0 || intrinsicHeight <= 0) {
        return null
    }

    val bitmap = Bitmap.createBitmap(
        intrinsicWidth,
        intrinsicHeight,
        Bitmap.Config.ARGB_8888
    )

    val canvas = Canvas(bitmap)

    val oldBounds = Rect(drawable.bounds)

    drawable.setBounds(
        0,
        0,
        intrinsicWidth,
        intrinsicHeight
    )

    drawable.draw(canvas)

    drawable.bounds = oldBounds

    return bitmap
}