Android Gallery issue - gallery size is bigger than expected

I've got Activity with gallery widget alongside w开发者_JAVA百科ith other views. I want gallery to be as wide as my Activity is, and I want my image to match gallery size. I'm a little bit confused with ImageView.ScaleType, but that's what I've chosen:

Part of my curtom adapter for Gallery:

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ImageView imageView=new ImageView(activity);
    imageView.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
    imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
    //imageView.setPadding(10, 10, 10, 10);
    String imageUrl="my_uri.com/sample.png";

    imageLoader.displayImage(imageUrl, activity, imageView);

    imageView.setTag(imageUrl);

return imageView;
}

Part of my Activity layout:

 <Gallery 
       android:id="@+id/gallery"
       android:layout_below="@+id/tvDetailedDescription"
       android:layout_width="fill_parent"
       android:layout_height="wrap_content"
       android:background="#CCCCCC"
     />

What I need is to get rid of that extra grey part of gallery on top and bottom(marked red). I wonder, why does it have such size? Maybe I do something funny with that scaling type stuff?

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Try using ScaleType.CENTER_CROP instead - this will make the image fit the full height while maintaining it's aspect ratio - ie some of the image on the left and right will not be visible.

Alternatively you could use ScaleType.FIT_XY - this will not maintain the aspect ratio and will stretch the image so that all of the image fits inside the ImageView.

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Try changing the layout params of the image view (set the height to fill_parent as well) -

Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); 

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android:layout_weight="1" for gridview or parent. you must use "hierarchyviewer" tools for better undestand what layout need to have design priority, for undestand what layout don't fill own parent.

I hope that it help you.