[android-developers] set imageView

hi all,

I have a imageView1 and imageView2,
then i want to set imageView1 to imageView2,
but use the following API will not do this,
such as:
setBackgroundResource(int resource id)
setBackgroundDrawable(drawable d)
setImageBitmap(Bitmap b)
setImageDrawable(drawable d)
.....etc

so how can I do?

thanks