Develop Reference

Android Studio, wrap ImageView size around the x and y scale of the actual image

I have an ImageView with a mail icon, however, it was too big so i reduced its size.
The actual size of the image is smaller, but the content it wraps is still the same, resulting in my lines not being even. The image below demonstrates my problem
As you can see, the size of the imageview does not wrap around the image itself.
Below is the XML for the imageview
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#mipmap/ic_mail"
android:scaleType="fitXY"
android:adjustViewBounds="true"
android:scaleX="0.5"
android:scaleY="0.5"/>
Is there a way to fix this?
Below this is the full XML for the whole layout if that would help
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="#color/PaleGrey">
<Space
android:id="#+id/dummyTopSpaceSc"
android:layout_width="wrap_content"
android:layout_height="10dp"
android:layout_alignParentTop="true"/>
<TextView
android:id="#+id/nameTextView"
android:paddingLeft="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/dummyTopSpaceSc"
android:text="name"
android:textStyle="bold"/>
<TextView
android:id="#+id/titleTextView"
android:layout_width="wrap_content"
android:paddingLeft="10dp"
android:layout_height="wrap_content"
android:layout_below="#+id/nameTextView"
android:text="title"/>
<android.support.percent.PercentRelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/titleTextView"
android:id="#+id/phoneContainer">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#mipmap/ic_phone"
android:scaleType="fitCenter"
android:scaleX="0.5"
android:scaleY="0.5"/>
<TextView
android:id="#+id/phoneTextView"
android:layout_width="wrap_content"
android:layout_centerVertical="true"
app:layout_marginLeftPercent="15%"
android:layout_height="wrap_content"
android:autoLink="phone"
android:text="phone"/>
</android.support.percent.PercentRelativeLayout>
<!-- below this comment is the container for the mail icon -->
<android.support.percent.PercentRelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/mailContainer"
android:layout_below="#+id/phoneContainer">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#mipmap/ic_mail"
android:scaleType="fitXY"
android:adjustViewBounds="true"
android:scaleX="0.5"
android:scaleY="0.5"/>
<TextView
android:id="#+id/emailTextView"
android:layout_width="wrap_content"
android:layout_centerVertical="true"
app:layout_marginLeftPercent="15%"
android:layout_height="wrap_content"
android:autoLink="email"
android:text="email"/>
</android.support.percent.PercentRelativeLayout>
<Space
android:id="#+id/dummyBottomSpaceSc"
android:layout_width="wrap_content"
android:layout_height="10dp"
android:layout_below="#id/mailContainer"/>
</RelativeLayout>

You should resize your image by giving it exact values for width and height instead of wrap_content if you actually want the bounding box to get smaller as you change the size. Then you can add padding/margins back to it as you wish. Also, you should use the android:src attribute (or maybe even app:srcCompat) instead of android:background.
<ImageView
android:layout_width="32dp"
android:layout_height="32dp"
android:src="#mipmap/ic_mail" />

Design layout display is not the same

How to edit xml file layout. All display screen is the same.
screen size 4.7", 5.0" display accuracy. But screen other than this. Display Distortion. Except screen tablet.
Help me fix it.
screen_main.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="jp.vertice.test.MainScreenFragment">
<!-- TODO: Update blank fragment layout -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#51c8fc">
<ImageView
android:layout_width="200dp"
android:layout_height="195dp"
android:id="#+id/imageView2"
android:src="#mipmap/ic_launcher"
android:background="#fc0c0c"
android:layout_marginLeft="18dp"
android:layout_marginStart="18dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<ImageButton
android:layout_width="100dp"
android:layout_height="100dp"
android:id="#+id/btn1"
android:layout_alignParentTop="true"
android:layout_alignLeft="#+id/btn3"
android:layout_alignStart="#+id/btn3" />
<ImageButton
android:layout_width="100dp"
android:layout_height="100dp"
android:id="#+id/btn2"
android:layout_below="#+id/btn1"
android:layout_alignLeft="#+id/btn1"
android:layout_alignStart="#+id/btn1" />
<ImageButton
android:layout_width="100dp"
android:layout_height="100dp"
android:id="#+id/btn5"
android:layout_below="#+id/btn2"
android:layout_alignLeft="#+id/imageView2"
android:layout_alignStart="#+id/imageView2"
android:layout_marginTop="5dp" />
<ImageButton
android:layout_width="100dp"
android:layout_height="100dp"
android:id="#+id/btn4"
android:layout_alignTop="#+id/btn5"
android:layout_toRightOf="#+id/btn5"
android:layout_toEndOf="#+id/btn5"
android:layout_marginLeft="9dp"
android:layout_marginStart="9dp" />
<ImageButton
android:layout_width="100dp"
android:layout_height="100dp"
android:id="#+id/btn3"
android:layout_alignTop="#+id/btn4"
android:layout_toRightOf="#+id/btn4"
android:layout_toEndOf="#+id/btn4"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp" />
</RelativeLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="205dp"
android:background="#F4F4F4"
android:layout_gravity="bottom">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="YYYY.MM.DD"
android:id="#+id/txt1"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="22dp"
android:layout_marginStart="22dp"
android:layout_marginBottom="173dp" />
<TextView
android:layout_width="230dp"
android:layout_height="50dp"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
android:id="#+id/text2"
android:layout_alignTop="#+id/txt1"
android:layout_alignLeft="#+id/txt1"
android:layout_alignStart="#+id/txt1"
android:layout_marginTop="25dp" />
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="BUTTON"
android:id="#+id/btn6"
android:layout_marginLeft="11dp"
android:layout_marginStart="11dp"
android:layout_alignTop="#+id/text2"
android:layout_toRightOf="#+id/text2"
android:layout_toEndOf="#+id/text2" />
<TextView
android:layout_width="fill_parent"
android:layout_height="20dp"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="FOOTER"
android:id="#+id/textView2"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:textSize="10sp"
android:textStyle="bold"
android:textAlignment="center"
android:gravity="center_vertical"
android:background="#FFFFFF" />
</RelativeLayout>
</FrameLayout>

Don't use Frame Layout here because Frame Layout used to show single view.

I see you are using fixed dp values for layout_width and layout_height.
dp means density independent pixel. It is not a size independent pixel.
The dp makes sure your layout looks the same on devices with the same size, but different pixel density. It will not look the same on bigger devices.
If you want it to scale to larger devices you will have to use match_parent and wrap_content.
Use the power of the relative layout to place items on the right side of the screen also.
You can also make separate layout files for differently sized devices. So you can customise it depending on the size.
You do this by making a new layout folder named for example layout-sw600dp/ (or any number you want) which will only be used on devices that have at least the width you specified (so 600dp in this example).
Make sure your layout file has the same name in this folder as in the normal folder.
You can find very useful information about this in the documentation:
here and here.

You can try using a GridLayout. This way, the image columns will fill the whole screen.

you can't work with dp and expect the same result on different
if you want same display for all the devices you can work with weightSum and weight here is a little example
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="2">
<LinearLayout
android:id="#+id/layout1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<LinearLayout
android:id="#+id/layout2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>

Android: ImageView display fail with big size

I have a problem with ImageView as below:
I have an image with big size (bigger than its part in screen), when I set src for imageView as:
<ImageView
android:id="#+id/splash_second_iv_right"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:src="#drawable/phone_white"
android:layout_toLeftOf="#id/middle"
android:visibility="visible"
android:padding="0dp"
android:layout_marginBottom="0dp"/>
then I put it into a RelativeLayout, problem is the content of image is displayed as wrap in the ImageView but size of ImageView is very big (seems as it auto create padding in the image view in four sides of ImageView, since my calculation for layout fails (can not align property position of child)).
Anybody can tell me what's the problem in here and how do I resolve this problem?
Please have a look at the image to have a better understanding. Also I added attribute:
android:adjustViewBounds="true"
android:scaleType="fitEnd"
I can align the content as I want but size of ImageView still very big.
The xml file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
android:id="#+id/splash_slide_forth">
<TextView
android:id="#+id/splash_forth_tv_title"
android:paddingLeft="60dp"
android:paddingRight="60dp"
android:layout_centerHorizontal="true"
android:gravity="center_horizontal"
android:text="#string/splash_4th_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:textColor="#2b333b"
android:layout_marginTop="40dp"
android:textSize="28sp"
/>
<TextView
android:gravity="center_horizontal"
android:layout_below="#id/splash_forth_tv_title"
android:id="#+id/splash_forth_tv_desc"
android:paddingLeft="60dp"
android:paddingRight="60dp"
android:layout_centerHorizontal="true"
android:text="#string/splash_4th_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#2b333b"
android:layout_marginTop="10dp"
android:textSize="15sp"
/>
<ImageView
android:layout_below="#id/splash_forth_tv_desc"
android:id="#+id/splash_forth_iv_vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/phone_vertical"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:scaleType="fitEnd"
android:adjustViewBounds="true"
android:visibility="gone"
/>
<ImageView
android:layout_below="#id/splash_forth_tv_desc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/splash_forth_iv_horizontal"
android:src="#drawable/horizontal_phone"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:adjustViewBounds="true"
android:scaleType="fitEnd"
android:visibility="visible"
/>

Please set image as background,
<ImageView
android:id="#+id/splash_forth_iv_horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_below="#id/splash_forth_tv_desc"
android:layout_centerHorizontal="true"
android:adjustViewBounds="true"
android:scaleType="fitEnd"
android:background="#drawable/demo_image"
android:visibility="visible" />
I really wish it works for you,otherwise we will do something else.

List View row height is not varying

I have the following layout that seems to have different heights for each row depending if one image get resolved. The layout is defined below. Without hardcoding the layout_height. How can I ensure all fit the same height. I understand image resolution plays a role. So, It might not be doable. However, I am looking for a creative way to solve the problem.
The first image is my default avator (it is 50x50 .png file). If there is attached image for a row, It would come as 50x50 .jpeg. So, different file types and thus different resolutions.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal" >
<ImageView
android:id="#+id/imgOwner"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.75"
android:layout_marginRight="10dp"
android:scaleType="centerInside"
android:contentDescription="Image Owner"
android:src="#drawable/icon_default_avator" />
<TextView
android:id="#+id/txtUserName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="10"
android:text="User Name"
android:textSize="10sp" />
</LinearLayout>
<TextView
android:id="#+id/txtVideoTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Video Title"
android:layout_marginBottom="10dip"
android:textSize="10sp" />
<TextView
android:id="#+id/txtVideoName"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1"
android:textSize="10sp"
android:text="Video Information"
android:layout_marginBottom="10dip"
/>

Try this way
Set imageview property like this
<ImageView
android:id="#+id/imgOwner"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginRight="10dp"
android:adjustViewBounds="true"
android:contentDescription="Image Owner"
android:src="#drawable/ic_launcher" />

Adjusting the size of an ImageButton in Android

Is there any way to do this? I have tried padding the image and setting the width/height of the view, but neither seems to work. Here is an example:
<ImageButton
android:id="#+id/search"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/search_small"
android:paddingTop="4sp"
android:paddingBottom="4sp"
android:paddingLeft="6sp"
android:paddingRight="6sp"
android:layout_marginRight="10sp"
android:layout_marginTop="6sp"
android:layout_marginBottom="6sp"
android:layout_alignParentRight="true"
/>
I want the button to be wider than it is tall, but it is coming out the other way round.

Just had a play to try and understand your problem.
Seems ImageButton is a composite view which has a few pre-set values. Such as some sort of margin which you cannot override with the XML. If you cannot change your image to match what you want to happen then you are better to create your own composite view.
Here is my example of a composite view you can make yourself:
<FrameLayout android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button android:id="#+id/saveSearchButton"
android:layout_width="50dp"
android:layout_height="50dp" />
<ImageView android:layout_width="45dp"
android:layout_height="45dp"
android:scaleType="fitXY"
android:src="#drawable/ic_menu_save"
android:layout_gravity="center"/>
</FrameLayout>
<FrameLayout android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button android:id="#+id/clearSearchButton"
android:layout_width="50dp"
android:layout_height="50dp" />
<ImageView android:layout_width="45dp"
android:layout_height="45dp"
android:scaleType="fitXY"
android:src="#drawable/ic_menu_close_clear_cancel"
android:layout_gravity="center"/>
</FrameLayout>
And the original buttons:
<ImageButton android:id="#+id/imageButton1"
android:src="#drawable/ic_menu_save"
android:layout_height="45dp" android:layout_width="45dp"/>
<ImageButton android:id="#+id/imageButton2"
android:src="#drawable/ic_menu_close_clear_cancel"
android:layout_height="45dp"
android:layout_width="45dp"/>
Here we can see custom image/button composite followed by the build in ImageButton as part of the SDK:

Set android:background instead of android:src to set the image on the button. This will adjust the image to your button's size. Then adjust the padding after.

You shouldn't use sp as a size dimension - dp should be used as it will help your view scale directly with different screen density and resolutions. See Here for dimensions.
padding will push other elements away from your view boundary. margin will push the contents of your view inward from the your boundary (ie would squash the available space for your picture) . The boundary is specified by height and width. Without more information I would guess you are being confused by your margins - delete them and experiment.
Also useful to you: android:scaleType="fitXY" makes the image stretch to match both the X and Y dimensions that are available to it. It helps you to see the canvas available to your image. Once you feel the area is large enough for a correctly scaled image change the scale type to centerInside. See Here for all scale types.

I use minWidth and minHeight attributes, combined with a fitXY scale type and wrapping its content to modulate the shape of my button.
<ImageButton
android:id="#+id/fooButton"
android:background="#drawable/play_button"
android:backgroundTint="#00000000"
android:minWidth="200"
android:minHeight="100"
android:scaleType="fitXY"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="playStuff"
/>

Can you explain your question more widely so that we can more understood.
As per my understanding You want to set your ImageButton Height/Width. But it doesn't work is it? I want to ask you that, if you write any specific height/width then also it doesn't work?
I copied your code in my files and I changed the height/width manually then it will work.
Please explain your question.
Thanks.

I finished the layout following Graeme's answer. Four "imageButton" fix the bottom, same width, changeable image size. thanks!
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:background="#color/#000"
android:weightSum="100" >
<FrameLayout
android:id="#+id/flBottom1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="25"
>
<Button
android:id="#+id/ibBottom1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/detail_tab_bg_selector"/>
<ImageView
android:layout_width="32dp"
android:layout_height="32dp"
android:scaleType="fitXY"
android:src="#drawable/icon_home_48_48"
android:layout_gravity="center_horizontal"
android:layout_marginTop="5dp"
/>
<TextView
android:id="#+id/tvBottom1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center_horizontal"
android:layout_marginTop="35dp"
android:text="#string/bailty_text_home"
style="#style/bailtyTextBottom"
/>
</FrameLayout>
<FrameLayout
android:id="#+id/flBottom2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="25"
>
<Button
android:id="#+id/ibBottom2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/detail_tab_bg_selector"/>
<ImageView
android:layout_width="32dp"
android:layout_height="32dp"
android:scaleType="fitXY"
android:src="#drawable/icon_compose_48_48"
android:layout_gravity="center_horizontal"
/>
<TextView
android:id="#+id/tvBottom2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center_horizontal"
android:layout_marginTop="35dp"
android:text="#string/bailty_text_comment"
style="#style/bailtyTextBottom"
/>
</FrameLayout>
<FrameLayout
android:id="#+id/flBottom3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="25"
>
<Button
android:id="#+id/ibBottom3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/detail_tab_bg_selector"/>
<ImageView
android:layout_width="32dp"
android:layout_height="32dp"
android:scaleType="fitXY"
android:src="#drawable/icon_search_48_48"
android:layout_gravity="center_horizontal"
/>
<TextView
android:id="#+id/tvBottom3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center_horizontal"
android:layout_marginTop="35dp"
android:text="#string/bailty_text_search"
style="#style/bailtyTextBottom"
/>
</FrameLayout>
<FrameLayout
android:id="#+id/flBottom4"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="25"
>
<Button
android:id="#+id/ibBottom4"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/detail_tab_bg_selector"/>
<ImageView
android:layout_width="32dp"
android:layout_height="32dp"
android:scaleType="fitXY"
android:src="#drawable/icon_barcode_48_48"
android:layout_gravity="center_horizontal"
/>
<TextView
android:id="#+id/tvBottom4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center_horizontal"
android:layout_marginTop="35dp"
android:text="#string/bailty_text_scan_again"
style="#style/bailtyTextBottom"
/>
</FrameLayout>
</LinearLayout>