SquareImageView.java 文件源码

/**
 * 将Drawable转换为Bitmap
 *
 * @param drawable 要转换的Drawable
 * @return 转换后的Bitmap
 */
private Bitmap d2b(Drawable drawable) {
    if (null != drawable) {
        if (drawable instanceof BitmapDrawable) {
            return ((BitmapDrawable) drawable).getBitmap();
        } else {
            Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565);
            Canvas canvas = new Canvas(bitmap);
            drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
            drawable.draw(canvas);
            return bitmap;
        }
    }
    return null;
}