I\'d like to scale an image up to take up the entire size of an ImageView. This is subtly different than using scaleType=fit_center because fit_center will leave b
scaleType=fit_center
You can use android:scaleType="centerCrop". Keeps the aspect ratio and scales the image just like you want it.
android:scaleType="centerCrop"
For more information please go through the below link
http://developer.android.com/reference/android/widget/ImageView.html#attr_android:scaleType