imageview height as the wrap_content of the shown image

Question

I want the width of an ImageView to be set by the parent and the height should be aspect proportional. The reasons for this is that next is shown a TextView that I want to place just under the ImageView.

I can get image to show correctly using

android:layout_width="fill_parent" android:layout_height="fill_parent" 

however the ImageView height become the parent height which is much larger than that of the shown stretched image. One idea was to make parent smaller vertically, but.. there I don't yet know the stretched image size.

The following doesn't work because a small image is not filled up horizontally.

android:layout_width="fill_parent" android:layout_height="wrap_content" 

Messing around with

android:layout_height="wrap_content" 

for the RelativeLayout surrounding it all does not help. Also tried FrameLayout and LinearLayout and failed.

Any ideas?

Answer 1

You have to set adjustViewBounds to true.

imageView.setAdjustViewBounds(true); 

Answer 2

There is two case if your actual image size is equal or grater than your ImageView width and heigh then you can use adjustViewBounds property and if your actual image size is less than ImageView width and height than use scaleType property to shown image in ImageView based on your requirement.

1.Actual image size is equal or grater than ImageView required width and height.

<ImageView     android:layout_width="match_parent"      android:layout_height="wrap_content"     android:adjustViewBounds="true"     android:src="@drawable/ic_launcher"/> 

2.Actual image size is less than ImageView required width and height.

<ImageView     android:layout_width="match_parent"      android:layout_height="wrap_content"     android:scaleType="fitXY"     android:src="@drawable/ic_launcher"/>