Develop Reference

Delete padding or Force fitting or Delete empty space from square Vector asset to Fit a Rectangular button?

I'm trying to adjust the all_inclusive svg image to my rectangular button. The shape itself is rectangular as well but the vector asset is square (24x24) with white spaces above and under the shape. These spaces force the shape itself to be very small. How to make the all inclusive svg rectangular by deleting that padding on top and on bottom?
In this picture the image is set to fit the guidelines on the left, top and right side:
<ImageView
android:id="#+id/imgInfinity"
app:srcCompat="#drawable/ic_infinity"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintTop_toTopOf="0.75"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toEndOf="0.75"
app:layout_constraintEnd_toEndOf="0.25" />
Things that did not work:
pivot vector asset with a group -> I just cant figure out the dimensions without messing up the original shape. Same storty with scaleX/Y or translateX/Y. I got it to work on my other buttons with simpler shapes though.
adjusting android:viewportheight or android:height -> it deshapes the picture to a weird form
crop svg online --> as Googles original SVG pathData is already 580 characters long, cropping tools only make it to large for android to deal with (above 1000 charactes)
crop svg picture with word and extract from zip file-> it doesnt compress svg images so it stays rectangular with the white spaces above and under.
Set a seperate horizontal guideline for the top of the picture. It does the trick but one or multiple guidelines for each image gets very messy. There must be a better way, right?..
ACCEPTED SOLUTION (edit with InkShape):
Install InkShape
Open SVG
Click on picture once to select it
Go to File-> Document Properties and click 'Resize pager to drawing or selection' (this button is hidden on the first tab, click +Resize page to content to show the option);
Save
extract pathData and (viewport)width/heights from saved file.

The viewportHeight attribute defines the size of the "canvas" that the path is drawn on (i.e., it defines what the coordinates in the path data actually "mean").
The height attribute defines the intrinsic size of the drawable.
The original vector has 6.5 units (in the viewport) of white space at the top and the bottom. That means that you can look for any pathData command that uses a capital letter, and subtract 6.5 from the y coordinate. That leaves you with this:
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="13dp"
android:viewportWidth="24.0"
android:viewportHeight="13.0">
<path
android:fillColor="#FF000000"
android:pathData="M18.6,0.12c-1.44,0 -2.8,0.56 -3.77,1.53L12,4.16 10.48,5.5h0.01L7.8,7.89c-0.64,0.64 -1.49,0.99 -2.4,0.99 -1.87,0 -3.39,-1.51 -3.39,-3.38S3.53,2.12 5.4,2.12c0.91,0 1.76,0.35 2.44,1.03l1.13,1 1.51,-1.34L9.22,1.7C8.2,0.68 6.84,0.12 5.4,0.12 2.42,0.12 0,2.54 0,5.5s2.42,5.38 5.4,5.38c1.44,0 2.8,-0.56 3.77,-1.53l2.83,-2.5 0.01,0.01L13.52,5.5h-0.01l2.69,-2.39c0.64,-0.64 1.49,-0.99 2.4,-0.99 1.87,0 3.39,1.51 3.39,3.38s-1.52,3.38 -3.39,3.38c-0.9,0 -1.76,-0.35 -2.44,-1.03l-1.14,-1.01 -1.51,1.34 1.27,1.12c1.02,1.01 2.37,1.57 3.82,1.57 2.98,0 5.4,-2.41 5.4,-5.38s-2.42,-5.37 -5.4,-5.37z"/>
</vector>
Then, once the whole shape has been moved "up" by 6.5 units, you can subtract 11 (6.5 * 2) from both the viewport and the intrinsic height.
The end result is a 24x13dp shape, which should scale much better in wide views.

Update using Inkscape version 1.1:
Unfortunately, the latest version of Inkscape (1.1) no longer will import a vector drawable file directly, so the original answer is not 100% correct. That answer will probably work with other editors that can handle vector drawable files.
Here is an update to that answer that works with later versions of Inkscape to remove all padding from a vector drawable.
Convert vector drawable to scaled vector graphic (SVG):
Open Alex Lockwood's Shape Shifter site
Drag the vector drawable file from Android Studio to Shape Shifter.
Export the image as an SVG to a local file
Now that we have an SVG file, we can edit it with Inkscape:
Install Inkscape if not already installed.
Open SVG file in Inkscape.
Click on the image to select it.
Resize the image to the selection (Shift+Ctrl+R or Edit->Resize Page to Selection). You can also specify an alternate size if you desire some padding.
Save the image as an SVG file.
The image is now cropped in an SVG file. We need to convert it back to a vector drawable.
In Android Studio import the SVG file as a vector drawable. (File->New->Vector Asset) Asset Type = "Local file (SVG, PSD).
Once imported, the vector drawable no longer has any padding.
Use an image editor that can handle SVG files to crop the image. I used InkScape but there are others. Once the image is cropped, you can import it into Android Studio as an XML file.

Here's the new update on this topic:
https://code.google.com/p/android/issues/detail?id=202019
It looks like using android:scaleType="fitXY" will make it scale correctly on Lollipop.
From a Google engineer:
Hi, Let me know if scaleType='fitXY' can be a workaround for you , in
order to get the image look sharp.
The marshmallow Vs Lollipop is due to a special scaling treatment
added into marshmallow.
Also, for your comments: " Correct behavior: The vector drawable
should scale without quality loss. So if we want to use the same asset
in 3 different sizes in our application, we don't have to duplicate
vector_drawable.xml 3 times with different hardcoded sizes. "
Even though I totally agree this should be the case, in reality, the
Android platform has performance concern such that we have not reach
the ideal world yet. So it is actually recommended to use 3 different
vector_drawable.xml for better performance if you are sure you want to
draw 3 different size on the screen at the same time.
The technical detail is basically we are using a bitmap under the hook
to cache the complex path rendering, such that we can get the best
redrawing performance, on a par with redrawing a bitmap drawable.

Android Studio 3.2 Add Image Of Custom Size (not icon)

When I right-click the Drawable folder and click New -> Image Asset, I'm presented with only four options: action and tab bar icons, launcher icons, launcher icons (legacy), and notification icons.
What if I want to add an image to just use in my app (not as a tiny icon)? Selecting any of the options above causes Android Studio to scale the image down to like 24x24dp when I want to display it at 100x100dp. So, when I display it, it looks really blurry. Why isn't there an option to add an image asset that's not tiny?

Limited modification is to comply with the material design specification. you could use vector asset if you want to get different size image.
and notice you should down image with SVG format, read the ref in here
another way is using thrid party plugins like Android Drawable Importer, which is flexiable and simpler.

Just copy the image to your drawable folder in the Android sidebar view. Make sure it goes into drawable and not one of the density-dependent folders, and you'll have an image with a custom size.
Be aware that images can't be too big in Android. It shouldn't be larger than 1600px in either dimension, otherwise you run the risk of a laggy interface or an OutOfMemory error.

How to export menu icons in high quality using Illustrator

I made simple menu icons which look the way I want them to look when in Illustrator, but when I place them in my app they look pixelated and bad.
Here is it in my app (as you can see, the text is not pixelated):
This is how it looks in Illustrator (I cut the icons and pasted them next to the other two, that's why the background is in different color):
I made the icons on 72x72 px canvas and exported them as .png file.
I am using Android Studio to make my app, and use simple
android:background="#drawable/back_button" to set the image/icon for the ImageButton.

I never try Illustrator to put icons, but I am directly download icons from flaticon that provides any type of file and size too
Two way to get different canvas file in android studio.
Android Studio-> File-> Image Asset or Vector Asset
upload your file and set as you need
Icon Generator
From this you can get directly res folder with different canvas image.
Mostly I prefere first.
Thanks

these icons as shown in fig. have a background color assigned by you in illustrator, no matter these are exported as png format or jpg!
First go back to illustrator and try to make background of images transparent as you assigned greyish color, tell me if it works. That's great you are making icons for yourself. Good work.

I think when you save the file please try to save it (SVG) format & then place it.

How decide the size of svg file for using as VectorDrawable for android?

I was using pngs instead of svg, now I want to move .
When we are using from android asset the material icons ,the default size 24dp, I know we can modify it.
Now I want to know that if the png size for an icon is
52x62 hdpi
26x31 ldpi
......
saving resource in svg format the size how much should be?
and in layout xml we are going to use the xml as wrap_content yes?

For VectorDrawables, it doesn't really matter. They might have default width and height values of 24dp, but those values will be overridden by whatever size they eventually get drawn at.

Android Studio Image Asset Launcher Icon Background Color

I have a .png logo for my app which doesn't have a background, when I add it to android studio as an Image Asset I am forced to have a background. The hex field doesn't accept 8 digit color codes, 6 digits only. Is there anyway to keep the background invisible?

To make background transparent, set shape as None.
See the image below:
EDIT:
For Android Studio 3.0,
you can set it from Legacy Tab

I'm using Android Studio 3.0.1 and if the above answer doesn't work for you, try to change the icon type into Legacy and select Shape to None, the default one is Adaptive and Legacy.
Note: Some device has installed a launcher with automatically adding white background in icon, that's normal.

You have two ways:
1) In Background Layer > Scaling, reduce the Resize to 1
and then in Legacy > Legacy Icon set Shape as None
2) in Background Layer > Scaling > Source Asset, you can set an image as a 1x1 pixel (or any size) transparent.png image (you've already created).
and then in Legacy > Legacy Icon set Shape as None

the above approach didn't work for me on Android Studio 3.0. It still shows the background. I just made an empty background file
<?xml version="1.0" encoding="utf-8"?>
<vector
android:height="108dp"
android:width="108dp"
android:viewportHeight="108"
android:viewportWidth="108"
xmlns:android="http://schemas.android.com/apk/res/android">
</vector>
This worked except the full bleed layers

This is just another workaround.
For the 'Foreground Layer', select 'Asset type' as text and delete the default text in the text field.
For the 'Background Layer', select 'Asset type' as image and now choose the path of the image you want as an icon.
And you are good to go.

Android Studio 3.5.3
It works with this configuration.

I Just put my view background (color code) as ClipArt or Image background, and it looks like transparent or no background where both have the same color as background.

These are the steps I took to make an image transparent:
1- I used an online website which makes the image transparent, there are a lot of them. For me, I use this https://www241.lunapic.com/editor/?action=transparent and sometimes this http://www.online-image-editor.com/help/transparency
2- In Android Studio (I'm using version 3.1.3), open Image Asset from app > res (right click) > New > Image Asset
3- In the Path, choose the location of the transparent image which you downloaded from the online website, and make the other options as shown, then Next, then Finish. The five different sizes of image mdpi(48×48), hdpi(72×72), xhdpi(96×96), xxhdpi(144×144), and xxxhdpi(192×192) will be created in the res/mipmap-density folders.
4- If you need sizes (dimensions) different from above, you can use this website http://nsimage.brosteins.com/ to upload your PNG image of biggest size that will be used in xxxhdpi. After uploading, you can download a zip file containing the five different sizes of image in the res/drawable-density folders.

First, create a launcher icon (Adaptive and Legacy) from Image Asset:
Select an image for background layer and resize it to 0% or 1% and
In legacy tab set shape to none.
Then, delete folder res/mipmap/ic_laucher_round in the project window and Open AndroidManifest.xml and remove attribute android:roundIcon="#mipmap/ic_launcher_round" from the application element.
In the end, delete ic_launcher.xml from mipmap-anydpi-v26.
Notice that: Some devices like Nexus 5X (Android 8.1) adding a white background automatically and can't do anything.

With "Asset Type" set to "Image", try setting the same image for the foreground and background layers, keeping the same "Resize" percentage.

I just added the icon as a normal icon: New -> Vector Asset
and then change the app icon in the Manifest file.

For Foreground Layer choose "Text" and then delete the content text
Finaly choose the path of the image you want as an icon.
enter image description here

Using android 3.0.1
I noticed this weird behavior(solution),
First: in background layer in the source_asset change the asset_type from image to color and than change it back to image.
second: enable trim in scaling and then resize it to a small percentage and it will work perfectly.
PS: If u didn't do the first step the scaling wont take affect.
and if anyone have an explanation for this please provide.
steps