Develop Reference

Android: Set size of ImageView (GIF) to dimensions of source

:)
I am using an ImageView and I display gifs in it. The problem is for example this gif: http://media3.giphy.com/media/110U0ZUA6mPxqE/200.gif has different dimensions than this: http://media0.giphy.com/media/10YsmVhdN1S6wE/200.gif and I display the gifs in a listview. The gif which has more or less the same height and width is shown good. But the gif which has unreasonably different width and heigt shows only a part of the gif..
This is my Item:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:id="#+id/imageViewGif"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:scaleType="fitCenter"
android:minWidth="300dp"
android:visibility="visible" />
</LinearLayout>
<ProgressBar
android:id="#+id/progressBarSearchedGif"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
</RelativeLayout>
To sum up, the question is how can I show the full gif in my imageview even when the dimensions of the gifs are different.

you can try removing android:scaleType="fitCenter" , and set android:adjustViewBounds="true" to your imageview.

If you always want the entire image to display in an ImageView, you have two choices. You can either stretch it to fit the size of the ImageView with this option:
android:scaleType="fitXY"
Or you can reduce the size of the image to fit the ImageView without changing its aspect ratio:
android:scaleType="centerInside"
Refer to the javadoc for details.

How can I make my image bigger on Android with XML?

I have an image on my ImageView but I don't know how to make it bigger with XML. My image it's the following:
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/img"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:src="#drawable/image"/>
I tried changing android:layout_width and android:layout_height attributes but if I put them with a number (for example, 200dp width and 100dp height) the ImageView it's on the left of the screen and not center.
I want to center the image and makes it a little bit bigger than the original. I couldn't find anything to makes it bigger at the same time it is displayed on the center of the screen.
Is it possible? How can I do that?
Thanks in advance!

Use scaletype and add android:adjustviewbounds="true" in your image view section.

Keep the size you want as the width and height of the ImageView and change the gravity of its parent to center
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:id="#+id/img"
android:layout_marginTop="40dp"
android:src="#drawable/image"/>
</LinearLayout>
EDIT:
If this is what you want your layout to look like
then all you would need to do is add
android:layout_gravity="center_horizontal"
to your ImageView, and specify the width and height in dp

There are 3 attributes you can add to your imageview:
android:scaleType=""
android:scaleX=""
android:scaleY=""
ScaleType types can be seen here. Basically, you'll want to use CENTER_CROP.
scaleX and scaleY uses float as parameters, defining the scale for the two axis. See the reference here.

Both codes above works (Andrew Brooke and IntelliJ Amiya, Thanks!) but now I found a "trick" to avoid both of these methods. It's to create the ImageView using android:minWidth and android:minHeight so the final ImageView will be like:
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/img"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:minWidth="100dp"
android:minHeight="70dp"
android:src="#drawable/image"/>
With that, you can center your ImageView with the size that you want.

Android: How to resize image to fill parent?

I am working on application which shows images, and I need to create a view which shows big images in a 1:1 aspect ratio.
First, I have thumbnails which are at a 72x72 resolution. I have put them in an ImageView but even if I add the parameters android:width="fill_parent" and android:height="wrap_content", the image would not be not the size of the ImageView but is only centered in the mid.
I tried adding the parameter android:scaleType="centerCrop" which resized the image well horizontally but the height remained the same.
How could I set up my ImageView so that it would be on all devices as width as the parent view and it should also be as height.
I can do this programatically, but I need to be able to do it in XML.
My XML File:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
// The ImageView I am talking about above
<ImageView
android:id="#+id/invitation_imageview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="1dp"
android:scaleType="centerCrop"
android:src="#drawable/face_woman_smile" />
<ImageView
android:id="#+id/invitation_avatar_view_1"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:src="#drawable/face_woman_smile"
android:scaleType="center"
android:layout_margin="1dp" />
</LinearLayout>

I think you need to add this to your ImageView
android:adjustViewBounds="true"

Use:
android:scaleType="fitXY"

To make image stretch to parent's width while keeping aspect ratio
Set
1- android:layout_width to match_parent
2- layout_height to wrap_content
3- adjustViewBounds to true
Like this:
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/imageView"
android:src="#drawable/unknown"
android:adjustViewBounds="true" />
Note: This might not render correctly in Preview but would work on runtime.

I usually use android:width="match_parent" and android:height="wrap_content", as you mentioned, but I use android:scaleType for my ImageView layouts.
You can read more about it here.

Why do I get white space on top and on the bottom of my ImageView in my RelativeLayout?

I am using a relativelayout to overlay to images. On all screen sizes so far that I have tested (from 2.7 to 10.1 inch) I always get white space on top of my image. In my IDE I always see that my relativelayout is causing the extra space on top and on the bottom of my image.
Why is that? I have set all height attributes to wrap_content and even added the adjustViewBounds attribute.
Note: You should know that my image is a lot bigger in size, meaning that there will be some sort of scaling.
Thanks for your tips!
Here is the code:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF"
android:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="vertical"
android:focusable="true"
android:focusableInTouchMode="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/bgf"
android:textColor="#000000"
android:textSize="25sp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:paddingRight="5dp"
android:paddingLeft="5dp"
android:paddingBottom="5dp"
android:layout_gravity="center_horizontal"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:src="#drawable/cde"
android:contentDescription="#string/cde" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:layout_gravity="center_horizontal"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:src="#drawable/fgh"
android:contentDescription="#string/abc" />
</RelativeLayout>
</LinearLayout>
</ScrollView>

I had the exact problem. After struggling for quite some time, I solved it by following this
and add the following to my program
android:adjustViewBounds="true"
It works perfectly

This is occuring as the image is scaled down to fit the area available without losing the image's aspect ratio. You are getting white space because the image first occupied the available width and according to the aspect ratio of the original image the height of the was brought down.
To get a clearer understanding, I suggest you to do the following :
Set the background color of the relative layout to some color
Now you can understand the space between the imageView and the relativelayout.
Once you have checked that on your device, Do the following change and try again
Set the attribute scaleType = "fitXY" in your imageView.
This will make the image to scale and occupy the complete area available to the imageView. (The aspect ratio of the original image will be lost in this case). Now you will come to know the amount of area the imageView occupied.
I suppose once you do this you can conclude that :
In the first run if you had set the background of relativeLayout as black, it won't be visible since the imageView occupies the entire area without leaving any gap.
In the second run the image will cover the entire height and width, although the aspect ratio was lost. Hence this ascertains that imageView does cover the width and height and no space is left, its the image's aspect ratio ie the problem
In case you arrive at a different result altogether please do inform, we can work it out
EDIT :
Please do remove the paddings you have given for imageView too

Extra Padding On Top Of My Images

I have a LinearLayout (Horizontal) that I am using to display 3 ImageViews. When I first add the ImageViews the last one is shrunk because the images are too big to fit 3 across. Here is what my designer screen looks like:
Notice the third image is shrunk.
To fix this issue I set the following attributes on each ImageView.
width: 0dp
weight: 1
Here is how my images look after setting those attributes:
The problem I am running into is even though the images have been shrunk there is still space at the top and bottom as shown by the blue rectangle in the following image:
My question is, why is this extra padding there and how can I get rid of it?
Thank you
UPDATE - adding my layout file
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/RelativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:background="#color/app_background_color"
android:contentDescription="#string/game_image_button"
android:gravity="center"
tools:context=".EasyActivity" >
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<ImageView
android:id="#+id/ImageView02"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:contentDescription="#string/game_image_button"
android:src="#drawable/ruler200x200" />
<ImageView
android:id="#+id/ImageView01"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:contentDescription="#string/game_image_button"
android:src="#drawable/ruler200x200" />
<ImageView
android:id="#+id/imageView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:contentDescription="#string/game_image_button"
android:src="#drawable/ruler200x200" />
</LinearLayout>
</RelativeLayout>

ImageViews support different ScaleTypes, the default is FIT_CENTER. here are the other options. FIT_CENTER means its going to start out with height and width equal to your image (what your images looked like in the first screen shot before you added weight). What I believe happened is that it then resized the width of the image based on your layout_weight, and maintained the image's aspect ratio by shrinking it to fit the new width. It left the height to be the original height and centered the result.
I think one of the other scale types would do what you want. Maybe CENTER or CENTER_INSIDE

You can use the following code
<Imageview.....
android:adjustViewBounds="true"
..../>