I have this feature to be implemented in my app. Image is received from a remote database,
the image has a blur filter with a shape that shows unblur part of the image.
This shape/ unblur mask is so other parts of the image can be seen by dragging it.
https://stackoverflow.com/questions/14780006/transparent-blurry-view-which-blurs-layout-underneath This gave me some idea but Renderscript is depreciated and few resources which cover render script are not working
What other libraries can be used to achieve this kind of task?
unblur shape mask
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.
Actually I'm using android-svg library to display SVG files in ImageView. For scrolling and scaling on this image I used calculated values on matrix.postTranslate() and matrix.postScale() and it works fine, but every time when I update matrix it trigger onDraw() method which render whole SVG for this operation. Those SVG files are very big and scrolling with scaling are not smooth if every event trigger rendering again. I want to render this file once and just change viewport for user when scrolling or zooming image. Is it even possible ? If it's then how to achieve it ?
Thanks for any help.
I want to blur the specific part of image in android without using Render Script. I am using minSdkVersion 14. I want to make image blur dynamically like image processing apps do. Dynamically means there should be one movable view on top of image and inside that view, Image will be clear and other than that it should be blurred.
You should first blur the bitmap:
Android: fast bitmap blur?
Then you have to apply image masking to that bitmap by using transparent in the middle.
Masking(crop) image in frame
Then you should put this bitmap as drawale to your movable imageview.
I have simple png image (http://imgur.com/GAoKEnh) and when I zoom out, to <10% the image begins to deform and I am missing most of the outline. The zoom-out is for supporting multiple displays.
This image is actually used as a template for a collage and so it is in its "final" size, and I wish to keep it like so.
I tried to convert the image into a 9-patch, but it still shows the same behavior.
I've tried asking Google but without success... could you please advise?
Thanks