Develop Reference

How to adjust how much an ImageView is cropped by when using scaletype centerCrop on Android?

I have an ImageView (PhotoView) within a LinearLayout and I am applying scaletype center crop but is cropped a bit too much and appears too zoomed in. How can I resolve this?
<LinearLayout
android:id="#+id/photoViewContainer"
android:layout_width="wrap_content"
android:layout_height="#dimen/flexible_space_image_height"
android:background="#android:color/holo_purple"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0">
<com.github.chrisbanes.photoview.PhotoView
android:id="#+id/mainImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
android:adjustViewBounds="true"
android:background="#android:color/black" />
</LinearLayout>

I am not sure if you can control the cropping, but using scaletype="fitXY" and providing some padding worked for me.
<com.github.chrisbanes.photoview.PhotoView
android:id="#+id/mainImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitXY"
android:padding="16dp"
android:adjustViewBounds="true"
android:background="#android:color/black" />
In this, the scaletype="fitXY" would squeeze the image to the size of screen and padding it would fit it in center.
Also there is a hack that i have heard of, in which you replace the padding by negative padding, which would zoom out the image, but i have not tried it.

How to make the size of ImageView independent to parent when it is larger than the parent?

for example, if a 80dp square layout contains a smaller ImageView, the size of ImageView will not be scaled:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="80dp"
android:layout_height="80dp"
android:background="#FFFF00"
android:clipChildren="true">
<ImageView
android:adjustViewBounds="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/sym_def_app_icon" />
</RelativeLayout>
but if the parent is smaller than the ImageView, eg:30dp:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="30dp"
android:layout_height="30dp"
android:background="#FFFF00"
android:clipChildren="true">
<ImageView
android:adjustViewBounds="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/sym_def_app_icon" />
</RelativeLayout>
it would be scaled automatically:
but I want the ImageView cropped instead of scaled:
how can I get this crop effect in xml?

There is alot of techniques available.
Try to Add both attribute in your ImageView xml
android:scaleType="matrix"
OR
Use margin-right,left,up,down.
OR
Search Icon size in google and then edit this icon in photoshop give it a fix size of icon .

try adding following attribute in your ImageView xml
android:scaleType="matrix"
hope it helps :)

How to rotate ImageView and have its size adjust automatically?

Image 1 is without rotation,I want image 3 when I rotate ImageView, but something like image 2 is displaying. How can I have the ImageView change its dimensions automatically?
My guess is that after rotation, the width and height of the ImageView is preserved, and I do not want that
P.S. I don't want to change the orientation of the layout
here is the picture(Rectangle is the phone, person is the imageview)
Here is my xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="#+id/page">
<ImageView
android:scaleType="centerInside"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="#+id/character"
android:rotation="90"
/>
</FrameLayout>
<!-- I tried all scaleTypes, and set height/width to fill_parent, wrap_content,and match_parent nothing worked-->
any help is appreciated. thanks!

Remove adjustViewBounds and use scaleType fitCenter. It should work. Try this:
<ImageView
android:scaleType="fitCenter"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="#+id/character"
android:rotation="90"
/>

Try this:
<ImageView
android:scaleType="fitCenter"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="#+id/character"
android:adjustViewBounds="true"
android:rotation="90"
/>
Edit:
android:adjustViewBounds="true"
will set scaleType="fitCenter", so I think you should try scaleType or adjustBounds ,no both.
<ImageView
android:scaleType="fitCenter"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="#+id/character"
android:rotation="90"
/>

ImageView without scaling

I have a ListView that shows rows
This is the xml:
...
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:layout_weight="1"
android:background="#color/white"
android:orientation="vertical" >
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight=".30">
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#drawable/face"
android:scaleType="centerCrop" />
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight=".70"
android:background="#color/white"
android:padding="4dp" >
// Other views...
</LinearLayout>
</LinearLayout>
…
and get this result:
this is the original image
need is the image without scaling, just like this:
I am using android: ScaleType = "centerCrop" I tested with android: adjustViewBounds = "true" and many other parameters, but never successfully
Ideas?
thanks in advance

Set your image to android:src instead of android:background.
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:src="#drawable/face"
android:scaleType="centerCrop" />
All views can take a background image
The src to an ImageView has additional features:
different scaling types
adjustViewBounds for setting bounds to match image dimensions
some transformations such as alpha-setting
And more that you may find in the docs.

Change android:background="#drawable/face" to android:src="#drawable/face"
Scale type will only work forandroid:src

You can use android:src instead of android:background to set your drawable. Something like:
<ImageView android:layout_width="wrap_content"
android:layout_height="match_parent"
android:src="#drawable/face"
android:scaleType="centerCrop" />
Also, Why not just crop the image using an image editor software like photoshop and use that image instead? Dynamically scaling and manipulating images should be avoided to prevent heavy use of system resources as far as possible.

I think, your problem is inserted weights in LinearLayout and FrameLayout. Please use RelativeLayout without weight. System can not crop your picture because system can not measure ImageView and can not compare him with your picture. In sum system thinks "This is picture and ImageView equal".
I have done so :
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="5dp">
<ImageView
android:id="#+id/image"
android:layout_height="50dp"
android:layout_width="match_parent"
android:src="#drawable/photo"
android:scaleType="centerCrop"
android:contentDescription="#string/app_name"
android:layout_alignParentTop="true"
/>
<TextView android:layout_height="150dp"
android:layout_width="match_parent"
android:text="#string/text"
android:layout_below="#id/image"
android:maxLength="350"
android:layout_marginTop="5dp"/>
</RelativeLayout>

How do I remove extra space above and below imageView?

I have a really simple image within a RelativeLayout and for some reason I am getting extra spacing on the top and bottom which I can't remove. How can I clear it out?
Here is what it looks like:
Here is the code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:src="#drawable/slice11pp" />
</RelativeLayout>

Try this
android:adjustViewBounds="true"

In your above imageView just add android:scaleType="fitXY"

Your problem is probably that you have no scale type set... Add it to the XML for the ImageView, "fitCenter" should be correct, but there are others, check: ScaleType.
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:src="#drawable/slice11pp"
android:scaleType="fitCenter" />

Must be enough adding the property:
android:adjustViewBounds="true"
for example:
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:src="#drawable/slice11pp"
android:adjustViewBounds="true" />

If your image view height is match_parent, even if you set android:adjustViewBounds="true" ImageView will add some extra blank space at top and bottom side. so, change ImageView height to wrap_content and set android:adjustViewBounds="true"
for example
<ImageView
android:id="#+id/img_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"/>

Use drawable-nodpi folder if there is no specific requirement for images. Then android: adjustViewBounds = "true" acts as the default.
If you use drawable-nodpi you don't need to set android:adjustViewBounds = "true".
I think this is the most effortless method.

android:scaleType="centerCrop" by adding this
<ImageView
android:id="#+id/image"
android:layout_width="200dp"
android:layout_height="200dp"
android:src="#drawable/temp_image"
android:adjustViewBounds="true"
android:scaleType="centerCrop"/>
works for me Before and After Image

this line of code will solve the problem
android:adjustViewBounds="true"
don't forget to rotate the image

just add ScaleType="fitxy" inside the Image view

Try this
<ImageView
(...)
android:adjustViewBounds="true" />

this is the perfect solution
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:scaleType="fitXY"
/>
it will not leave any extra single dp in any side. however the image will be distorted if it is not portrait image.