While developing Android Applications, supporting multiple resolutions are sometime nightmare to developers. Including multiple images for different resolutions also increases the project size. While Android does not support SVGs Scalable Vector Graphics directly, with the launch of Lollipop a new class was introduced called VectorDrawablewhich allows designers and developers to draw assets in a similar fashion using only code.
Simply explained, vector graphics are a way of describing graphical elements using geometric shapes. They are particularly well suited to graphical elements created in packages such as Adobe Illustrator or Inkscape where simple geometric shapes may be combined in to much more complex elements. As the name implies, vector drawables are based on vector graphics, as opposed to raster graphics, vector graphics are a way of describing graphical elements using geometric shapes. It is similar to a SVG file.
Now there is no need to create different size image for mdpihdpixhdpixxhdpixxxhdpi etc. We need only one vector file for multiple screen size devices. Here is the detailed information Vector Asset Studio. Open build. So let us start by creating VectorDrawables from Material Icons Material Icons are the official icon set from Google that are designed under the material design guidelinesthese icons are open source and are beautifully crafted, delightful, and easy to use in your web, Android, and iOS projects.
In the project Right click on the drawable directory. Now Vector Asset Studio will show the location about where the file is being saved, review it and click on finish.
Android working with SVG / vector drawables
You can modify the width and height of the vector as per your requirement by default it stays as 24dpa vector may consist of one or more paths. A path may have many attributes among which fillColor and pathData are the most important. Now we have created vectorDrawable from Material Icon, what if we want a separate icon?
This layout contains shows how to use VectorDrawable with ImageView and other Views as background which is explained later in this tutorial. So let us start with a simple ImageView, and even simpler by assigning the VectorDrawable to the ImageView through xml layout. As you can see, we used app:srcCompat instead of android:srcso that the support library can do the rest to display the image seamlessly on all versions of android.
The support library converts VectorDrawables to raster graphics automatically on android versions below 5. So it was that easy. Now Let us do the same thing with Java code, i.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
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This library introduces dynamic control over vector drawables. Each and every aspect of a vector drawable can be controlled dynamically via Java instancesusing this library. VectorDrawables are really helpful for removing scaling problem but they lack control. Most of the changes to vector drawables are only possible by creating an AnimatedVectorDrawable and also defining animations.
All of this is good but lacks control that may be required during runtime. For example, if we need to change vector's properties Say, color based on a user action Say, if user is choosing the theme of app.
We can achieve this using AnimatedVectorDrawable but only to an extent, this approach can't be used if user action leads to an infinite number of cases Say, if user picks up a random color for theme and we need to change property of the vector for each case. Thus we need a mechanism that can be used to change a vector's properties at runtime using basic methods like setColorsetScalesetTranslation etc.
This is where this library comes in. The above examples are just the basic use cases and are meant to serve as a quick start to using the library.
For more complex animations and use cases involving clip-paths and groupshead to AnimationExamples. If your animation doesn't involve any clip-path or groupthen you may use RichPath library developed by tarek This library is really useful, if you don't want to indulge in too much mathematics or logic.
Dynamically changing background color Android Java
The library also provide custom drawable implementation in form of VectorMasterDrawable. It provides the same control over the vector, but allows the user to use the drawable as per its wish, for e. VectorMaster is licensed under MIT license.How to Create a Custom Button (With Images) in Android Studio
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Sign up. Dynamic control over vector drawables! Java Branch: master. Find file. Sign in Sign up. Go back.I have a white heart I have to change it to an orange heart on click. This is the screenshot of the UI I need. As you can see in the screenshot. I know I have to add one white heart icon initially then once I click on it the orange heart icon should be displayed. This is my code. The easiest option is to have two images as per the reply from Ahsanzz1.
However, if you wanted to generalise it to be able to have a whole load of color possibilities, you would use a png file for the image, make the heart transparent in the png file, and then, once loaded into an Image, overlay the Image on another view e. You could then have the heart appear to change color by simply changing the color of the view that is underneath the Image.
That way you could dynamically set the Color, rather than be restricted to two options. That's probably overkill for what you want here though. Or use the TintedImage nuget and bind the TintColor property.
Also, if you follow the MVVM principle, I would bind the tap action of the image to a TapIconCommand inside the view model instead of managing this in the code behind. The view model would also contains a notifying IconSelection property that would be bound to whatever icon you want to display, depending on its value you can achieve that with Triggers for example.
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November edited November in Xamarin. This is the screenshot of the UI I need As you can see in the screenshot. Tagged: xamarin. Best Answer. November edited November Accepted Answer. Simple solution is: Add two Images "whiteheart" and "orangeheart". JohnHardman GB University mod.
November Sign In or Register to comment. Facebook Twitter GitHub. About Xamarin Xamarin.When working on a new Android application, we needed to show an icon for info in different colors depending on the different system states. Something like:. Red — When there are some error in the system Green — If everything is working correctly. Yellow — There are some warnings for the user to review.
We were using the Android Info icon for start. When working on this though, I thought that simplest option would be to just create all the required color icons in the Photoshop and then use them depending on different conditions. In fact, with just one line of code change, I was able to create all the different colors icons. Mode mode of Drawable. Here is the code snippets which worked for me:.
So in case, you have set an icon at design time, and only want different colors of it depending on system state, then it might be easy to directly set that color filter to ImageView i. BTW, if you have good experience of Photoshop, then you might also be interested in the second parameter of the setColorFilter method of type PorterDuff.
Tags: AndroidColorDrawable. This entry was posted on Tuesday, July 31st, at pm and is filed under Android. You can follow any responses to this entry through the RSS 2. You can leave a responseor trackback from your own site. You should probably be using your own variable here to check for various application state for color variance.
I hope this makes sense. I think you can work on the similar lines i. You will have to play with it to get what you want. Name required. Mail will not be published required. Changing color of the Drawable or ImageView at runtime in Android. Something like: Red — When there are some error in the system Green — If everything is working correctly.
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I have a one black shape color image ,when user click on this image change image color dynamically green. Of course that is if you are drawing it with canvas. Learn more. How to Change image color dynamically in android? Ask Question. Asked 7 years, 3 months ago. Active 1 year, 4 months ago. Viewed 52k times. I am doing such type of project ,In my project change Image color dynamically.
Googling and other document follow but I am not solve my problem. Please help meis there any method or document to follow solve my problem. Hemantvc Hemantvc 1, 2 2 gold badges 25 25 silver badges 42 42 bronze badges. I have only one single black color shape image. BlackDevil thank for suggestion. Try,to understand already discussed in stack overflow post's and find the links below: stackoverflow.
I solve my issue using 41post. Your solution is here. Hope it solves your issue. Active Oldest Votes. Here's how I do this: It's pulling the color from a resource xml file.
Chuck D Chuck D 1, 1 1 gold badge 14 14 silver badges 25 25 bronze badges. Try a diffferent Mode and it will work for your example: developer.
I am try different mode ,this was change image color not image shape color. If you can use an alpha mask on the white part and use a white background in the parent view, that might work as well.
Borzh Borzh 3, 2 2 gold badges 35 35 silver badges 52 52 bronze badges. Just because answer works for you doesn't mean it should be the accepted answer.This is a great post. I like this topic. This site has lots of advantage. I found many interesting things from this site.
It helps me in many ways. Thanks for posting this again. Saturday, 23 May set background programmatically of layout using android drawable resource. Step 2: write code into your MainActivity. NOTE: Put two image with named is 1 a. Download project:. Share Share Tweet Share.
Richard C. Lambert 24 June at Subscribe to: Post Comments Atom. Follow me Share Follow devraj Tweet. Translate in my language. Download As:. Total Pageviews. Show html page from asset folder to webview sliding panel android example, slider left to righ Transparent background android example Simple EMI Loan calculator android example Time converter for convert time into hour,minute o Popular All time.
Transparent color code in android.
Vector drawables overview
Hello friends,In this tutorial i show you how to set color as a transparent by using HEX code e. I n this android example we see program for mathematics function like SUM or Addition of two numbers,Subtraction,Division,Multiplication ju Flight mode or Airplane mode android example. Hello friends,Let understand what is Airplane mode? It will cut of all signal transmissions from mobile called flights mo In this tutorial we learn how to write code for Enable or Disable mobile data connection in android.
Simple EMI Loan calculator android example. Measure Light intensity in android Light sensor in android. Anim with XML on click button android example. In this example we learn,how to create programmatic sliding panel or slider from left to right.
In sliding Panel,hold content and allow Adjust screen brightness in android.Not sure how to get past this challenge Please explain changes and why the changes are made Thank you. I'm not sure what you're asking. Did you also import RelativeLayout?
I created a project that meets what you've presented and the background changes to red from onCreate. Are you interested in how to change the color based on user interaction or to continuously change as the activity remains running? If you just want the background to change continuously automatically, here's an option:. Gotcha, sorry.
I haven't done that challenge. I've found some of those challenges to be rather picky in their result expectations. You have the correct code, just the wrong color. It wants you to set the background color to Green not red. Thanks Kate I seem to got stuck in the training text and got a mental block on the actual request Im trying to make something where I have different links and depending on the link it loads into an imageView below the header called subBanner into a solid color, rather than putting an image file to load.
Could I achieve the same thing using this code. Posting to the forum is only allowed for members with active accounts.
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Goal is to change the background color of mealLayout. Bundle; import android. Rob Mount 8, Points. Rob Mount Rob Mount 8, Points. If you just want the background to change continuously automatically, here's an option: Note, this method will create a background thread as a timer import java.
Random ; import java. Timer ; import java. TimerTask ; import android. Activity ; import android.
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