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Android, XML: Show only portion of image in layout container without altering aspect ratio

I want to set a background to any layout.
Usually, I would go on about this like here:
<LinearLayout
android:orientation="vertical"
android:background="##drawale/somedrawable"
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="100dp"/>
But this will always make the background fit the LinearLayout. But what if the layout was smaller in height than the image I set as background? I do NOT want to destroy the image's aspect ratio but just center the image inside the layout and have the height overlap so that it isn't visible anymore.
To clarify:
Left is what happens currently, but right is how I want to to be. Since the layout container is smaller than the imageview or background image is, it is supposed to stay centered but only show what fits without altering the aspect ratio.

Use an ImageView inside the linear layout with width and height match_parent and set the scaleType="centerCrop"
<ImageView
android:src="#drawable/somedrawable"
android:scaleType="centerCrop"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

you cannot apply the scaletype property in linearlayout its better to use imageview to achieve this following is the link how to use scaleType attribue, to avoid the stratching behaviour use the 9 patch image, follwoing is the link to convert your image into 9patch

ImageView src moves the image to center leaving sides visible when changing width and height

Please don't mark this a duplicate, as I am unable to find the solution.
Hi, I am trying to add src image with some background color
Here is what I am doing
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="20dp"
android:background="#drawable/bg_layout_corners"
android:backgroundTint="#color/color_fbfbfa"
android:gravity="center">
<ImageView
android:id="#+id/iv_dashboard_niggle"
android:layout_width="wrap_content"
android:layout_height="200dp"
android:layout_centerHorizontal="true"
android:layout_centerInParent="true"
android:layout_centerVertical="true"
android:scaleType="centerInside"
android:background="#color/colorAccent"
android:src="#drawable/niggle2_3_3_3" />
</RelativeLayout>
and here is the output I am getting
When I try to decrease the width or height of imageView, the actual image is placing at the center and some border is visible.
I also checked for scaleType="center", this is also not working
Please help me.

Hope this solves your problem.
iv_dashboard_niggle.setScaleType(ImageView.ScaleType.fitXY);

Set wrap_content as height for your relative layout.
Then the space will go.

The image that you wanted to set in a image view needed to be in the same aspect ratio to fit exactly without applying scaleType...
for example
If you want to set a square image that have height and width ratio 1:1 then ImageView ratio needs to be 1:1
Well but also we have ScaleType if images not according ratio then we can set scale type to match the size of image view by resizing our image
In your case it's completely depend on what you want to show.
If you don't want background border then simply set background color to transparent by using
android:background="#android:color/transparent"
Best way is define ImageView size according aspect ratio if you don't want to use scale type

Android: tag rotation in imageview cutting image inside listview

i'm new in android development and i'm trying rotating an image view inside a listview. I have the follow xml for the custom cell:
<RelativeLayout
android:id="#+id/content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true">
<ImageView
android:id="#+id/borderImageView"
android:layout_width="#dimen/photoReceiverWidth"
android:layout_height="#dimen/photoReceiverHeight"
android:scaleType="fitXY"
android:rotation="-10"/>
</RelativeLayout>
When it display, it cut a peace of the image. The view is not calculating the size for the rotation.
I don't want to create a new bitmap because the cost is too high.

android:adjustViewBounds="true"
This is an image view property, so place it within the image view rather than the relative layout. I am not sure if adjustViewBounds works on a fixed size ImageView.
You could change the width and height to wrap_content and use a maxHeight or minHeight property to define some additional bounding rules.
The scale type should also probably be centerInside, but play with these to see what suits.

ImageView set image

I use two ways to set image for imageView, by xml and by code setBackgroundResource
eg. img.setBackgroundResource(R.drawable.task_learn_lock);
OR xml
<ImageView
android:id="#+id/img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_weight="1"
android:src="#drawable/task_learn_lock"
android:contentDescription="#string/desc"
android:scaleType="centerInside" />
But the result is different, the image created by code is streched vertically. Anyone know why? I need to set a new image when the app is running. I tried to post a screen shot, but i do not have enough reputation to do so. Thanks.

Most likely it is because the default content (defined by xml) of the imageView's are different for these two approaches.
In your second method that sets the background image programmatically, I guess you should have set a default drawable image that is different from #drawable/task_learn_lock in size and aspect ratio.
Since the layout_height and layout_width of your ImageView are defined as wrap_content, the aspect ratio of your ImageView will be the same as your default src image. Therefore when you set the background image by img.setBackgroundResource(R.drawable.task_learn_lock), the image will be stretched to fit the current ImageView's dimension.
It appears in your case that you want to set the content to be #drawable/task_learn_lock but not the background of your ImageView, you should use setImageResource instead of setBackgroundResource.

How to create an ImageView that fills the parent height and displays an Image as big as possible?

I have an ImageView that is defined in the following way:
<ImageView
android:id="#+id/cover_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_below="#id/title"
android:layout_above="#id/divider"
android:adjustViewBounds="true"
android:src="#drawable/image_placeholder"
android:scaleType="fitStart"/>
Now after downloading a new bitmap I change the drawable. The image now appears in the top left corner of the ImageView. Is there a way to have the image fill up the whole height that is possible and then adjust the width of the view to enable scaling the image without changing the ascpect ratio?
The image fills up all the space on a standard screen but on a WVGA Resolution the image takes only about half of the actual height of the ImageView.

If I'm understanding you correctly, what you need to use is the centerCrop scaleType. fitStart scales the image proportionally, but neither the width nor height will exceed the size of the view, and the image will, as you said, have a top|left gravity.
Using centerCrop scales the image proportionally, but causes the shortest edge of the image to match the size of the view, and if there is additional data on the long side that does not fit, it is simply cropped off. The gravity is, of course, center. The below worked for me:
<ImageView
android:src="#drawable/image_placeholder"
android:id="#+id/cover_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="centerCrop"
/>

You can change scale type to fitXY via call to
imageView.setScaleType(ScaleType.FIT_XY);

simply do it in xml like
android:scaleType="fitXY"

Basically the answer here is that there is no predefined value for what you are trying to achieve. The solution is to create a Matrix that fits to your needs and call setImageMatrix(matrix) on your ImageView.