ImageUtils.java 文件源码

/**
 * drawable转bitmap
 *
 * @param drawable drawable对象
 * @return bitmap
 */
public static Bitmap drawable2Bitmap(Drawable drawable) {
    if (drawable instanceof BitmapDrawable) {
        return ((BitmapDrawable) drawable).getBitmap();
    } else if (drawable instanceof NinePatchDrawable) {
        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;
    } else {
        return null;
    }
}