Develop Reference

View Clipped with resolution 1080 X 1920 phones

In my project have custom view has fixed width.The width is specified in values->dimen
<dimen name="layout_width">75dp</dimen>
The issue is that in some device(eg:Pixel) with resolution 1080 X 1920 this view is Clipped. However some other devices(eg:Pixel2) with same
resolution everything works fine.
Have tried using different dimension files as in this post .Both these device are picking from same dimen files
Code
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="21dp"
android:gravity="center"
android:orientation="vertical">
<RelativeLayout
android:layout_width="55dp"
android:layout_height="55dp"
>
<ImageView
android:id="#+id/icon"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_centerInParent="true"
tools:background="#drawable/icon" />
</RelativeLayout>
<TextView
android:id="#+id/title"
android:layout_width="75dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_marginTop="20dp"
android:gravity="center"
/>
</LinearLayout>

Inside your imageView, experiment with different scaleTypes to see if any fit your use case.
<ImageView
android:id="#+id/icon"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_centerInParent="true"
android:scaleType="fitCenter"
tools:background="#drawable/icon" />
Other acceptable scaleType values are FIT_XY, FIT_START, FIT_CENTER, FIT_END, CENTER, CENTER_CROP

This happens due to different screen dpi of devices.
like normal 1080*1960 devices v/s nexus 5x (which has higher dpi with same resolution)
Another example can be of Samsung galaxy edge S6 (it has much higher dpi as 577dpi with xxxhdpi resolutions).
The most consistent and reliable solution would be not to use static height width, instead arrange layouts in such a way using wrap_content and match_parent properties and relative layouts

How to use icons in ImageButton without it getting pixelated?

I am using ImageButton in my custom bottom navigation. And I have set icons of 32*32 size as src to them.
here is xml
<ImageButton
android:id="#+id/bottom_nav_profile"
android:layout_width="match_parent"
android:layout_height="50sp"
android:layout_weight="1"
android:src="#drawable/btm_nav_user_act"
android:text="Profile"
android:adjustViewBounds="true"
android:scaleType="center"
android:background="#drawable/bottom_nav_bg"
android:textColor="#000"/>
When I view it on my phone they look pixelated. I'm fine them being smaller but I dont want them to be pixelated. How can I make adujustment so that they look sharper.
Here are the icons

It seems that your image is very small to begin with, you have 2 options:
Remove the hardcoded height (50dp), your original image may be smaller than this, forcing its height may be reducing its quality on certain devices.
Have the same drawable you're using but for different phone densities. I'm guessing you only have one version of your drawable image in the drawable folder, on certain phones with certain densities, this image may display badly (just as it may be displayed just fine on certain other phones).

Lets make custom Image Button with linear layout and imageview
<LinearLayout
android:id="#+id/id"
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/btm_nav_user_act"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Profile"
android:textColor="#000"/>
</LinearLayout>
Now use linear layout as a button.

Widget distance modifyed on different screen device

I've read the android support multiple screen tutorial.
when i try to see how my layout fit on different screen, something gone wrong. In my case i have only one tipe of image (970x174) for test copyed into all drawable folder.
By see my layout on different screen, in most cases, layout is not as i would. I paste code of my layout (that it fits well into nexus 4 screens)
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/TEMPORARY"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="128dp"
android:src="#drawable/button" />
<ImageView
android:id="#+id/image2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="64dp"
android:src="#drawable/button" />
<ImageView
android:id="#+id/image3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:src="#drawable/button" />
</RelativeLayout>
Maybe i should do a different density image for each screen type?

RelativeLayout doesn't have a orientation tag, so remove it.
Since you put the same image on all the drawable types, the image will have a fixed pixel size, which will decrease the size of the image on the screen as the screen density increases. But you used dp as unit on the layout, so the 128dp will increase in size as the density increases, to make the size on screen appear the same on different devices.
So if you want to have the same layout with the same size on screen regardless of screen density, delete the other copies of the image and leave only one drawable folder, and android will handle scaling for you on different screen density phones.

Android: OS not re-sizing images with the same scale

I am troubled by how the Android OS is handling resizing on an app of mine. Basically I have a background image that is 480x800 (so 480px wide) and an image that goes at the bottom, also 480px wide.
On the Galaxy S (480x800 screen) everything looks fine, as shown below:
On the Galaxy S3 (720x1280), however, the background is getting stretched to 720px wide but the image at the bottom only to 640px wide, as shown below:
I tried to create a xhdpi folder with 640x960 images, but same thing happens (background stretched to 720px, image only to 640px). I also tried to play with "ScaleType", but no luck so far.
Does anyone know why the OS would re-size the two images with a different scale, and how to fix it?
Here's the XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#drawable/bg" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/significados"
android:layout_gravity="center"
android:layout_marginTop="216dp"
android:onClick="goToSignificados"
/>
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/ranking"
android:layout_gravity="center"
android:onClick="goToRanking"
/>
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/engracados"
android:layout_gravity="center"
android:onClick="goToEngracados"
/>
<ImageView
android:id="#+id/iv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="60dp"
android:clickable="true"
android:contentDescription="#string/image"
android:onClick="goToMarket"
android:src="#drawable/googleplay" />
</LinearLayout>

You'll have to post your XMLs to get a more specific answer but basically all "Views" may handle image scaling differently.
In your example,
You can make your button stretch all the way by using width = match-parent.
"Backgrounds" will stretch by default, but can also tile.
"Buttons" will have a min size of the background size but will stretch when needed (button has too much text)
As a side note, you shouldn't depend on the exact pixels of the images. You should look into nine-patch or making tiled backgrounds and make sure you take advantage of things like "match-parent, gravity, etc."

Can't support multiple screen resolution

I'm struggling to finish my Android app, but I'm having some problems with the UI. My problem is very basic, I've developed the UI using the default AVD when using AVD manager in Eclipse (HVGA, with a density of 160 dpi), and when I execute the app I see it as I designed, but if I change the target device (i.e. WVGA or QVGA) all the components in the layout are in a different position than the original. As far as I saw in the recommendations for support multiple screens, I should not use AbsoluteLayouts, in fact I'm using RelativeLayouts, I'm not using "px" for the dimensions (or positions), just "wrap_content" or "fill_parent", and in case I need an specific position I'm using "dp" (tested too with "sp"), also I've scaled the images for ldpi (0.75x), and still have the issue (not a particular screen, the hole app) ...so, my question is, is there any other UI tip that I'm missing?.
I'm putting a sample code and the results that I observe when testing it with a HVGA AVD (bigger image) and with a QVGA AVD. As you can see, the position of the yellow/green squares is different, as well as the size of the last row of images.
PS: I'm using a TabLayout also, so the background is loaded through code (tabHost.setBackgroundDrawable(getResources().getDrawable(R.drawable.background1)))
Any help will be appreciated.
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="#+id/row1"
android:layout_centerHorizontal="true"
android:layout_marginTop="140dp"
>
<ImageView
android:id="#+id/btn1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:clickable="true"
android:onClick="method1"
android:src="#drawable/button1"
/>
<ImageView
android:id="#+id/btn2"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:clickable="true"
android:onClick="method1"
android:src="#drawable/button2"
/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_below="#id/row1"
android:layout_centerHorizontal="true"
>
<ImageView
android:id="#+id/btn3"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:clickable="true"
android:onClick="method1"
android:src="#drawable/button3"
/>
<ImageView
android:id="#+id/btn4"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:clickable="true"
android:onClick="method1"
android:src="#drawable/button4"
/>
</LinearLayout>
</RelativeLayout>

Your layout looks fine to me, except for having that white box title on the background as it will make more difficult to put things in their position. Also, RelativeLayout does not have orientation but that is ignored.
In the bigger screenshot it looks like there is more space between the white box and the top of the screen. What it does not make sense to me is the different size in the second row. Are you 100% sure you are loading the correct images in the smaller screenshot?

You need to create different layout for diff. resolution i.e for large screen use layout-large folder..
I hope this link help to you.

Did you follow the steps given on the developer site to make ur app to support multiple screens?